Photoproduction of J / ψ and of high mass e+ e- in ultra-peripheral Au + Au collisions at sqrt(sN N) = 200 GeV

S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, A. Al-Jamel, K. Aoki, L. Aphecetche, R. Armendariz, S. H. Aronson, R. Averbeck, T. C. Awes, B. Azmoun, V. Babintsev, A. Baldisseri, K. N. Barish, P. D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli & 325 others V. Baublis, F. Bauer, A. Bazilevsky, S. Belikov, R. Bennett, Y. Berdnikov, M. T. Bjorndal, J. G. Boissevain, H. Borel, K. Boyle, M. L. Brooks, D. S. Brown, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. M. Burward-Hoy, S. Butsyk, S. Campbell, J. S. Chai, S. Chernichenko, J. Chiba, C. Y. Chi, M. Chiu, I. J. Choi, T. Chujo, V. Cianciolo, C. R. Cleven, Y. Cobigo, B. A. Cole, M. P. Comets, Z. Conesa del Valle, P. Constantin, M. Csanád, T. Csörgo, T. Dahms, K. Das, G. David, H. Delagrange, A. Denisov, D. d'Enterria, A. Deshpande, E. J. Desmond, O. Dietzsch, A. Dion, J. L. Drachenberg, O. Drapier, A. Drees, A. K. Dubey, A. Durum, V. Dzhordzhadze, Y. V. Efremenko, J. Egdemir, A. Enokizono, H. En'yo, B. Espagnon, S. Esumi, D. E. Fields, F. Fleuret, S. L. Fokin, B. Forestier, Z. Fraenkel, J. E. Frantz, A. Franz, A. D. Frawley, Y. Fukao, S. Y. Fung, S. Gadrat, F. Gastineau, M. Germain, A. Glenn, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S. V. Greene, M. Grosse Perdekamp, T. Gunji, H. Å Gustafsson, T. Hachiya, A. Hadj Henni, J. S. Haggerty, M. N. Hagiwara, H. Hamagaki, H. Harada, E. P. Hartouni, K. Haruna, M. Harvey, E. Haslum, K. Hasuko, R. Hayano, M. Heffner, T. K. Hemmick, J. M. Heuser, X. He, H. Hiejima, J. C. Hill, R. Hobbs, M. Holmes, W. Holzmann, K. Homma, Byungsik Hong, T. Horaguchi, M. G. Hur, T. Ichihara, K. Imai, M. Inaba, D. Isenhower, L. Isenhower, M. Ishihara, T. Isobe, M. Issah, A. Isupov, B. V. Jacak, J. Jia, J. Jin, O. Jinnouchi, B. M. Johnson, K. S. Joo, D. Jouan, F. Kajihara, S. Kametani, N. Kamihara, M. Kaneta, J. H. Kang, T. Kawagishi, A. V. Kazantsev, S. Kelly, A. Khanzadeev, D. J. Kim, E. Kim, Y. S. Kim, E. Kinney, A. Kiss, E. Kistenev, A. Kiyomichi, C. Klein-Boesing, L. Kochenda, V. Kochetkov, B. Komkov, M. Konno, D. Kotchetkov, A. Kozlov, P. J. Kroon, G. J. Kunde, N. Kurihara, K. Kurita, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, J. G. Lajoie, A. Lebedev, Y. Le Bornec, S. Leckey, D. M. Lee, M. K. Lee, M. J. Leitch, M. A L Leite, H. Lim, A. Litvinenko, M. X. Liu, X. H. Li, C. F. Maguire, Y. I. Makdisi, A. Malakhov, M. D. Malik, V. I. Manko, H. Masui, F. Matathias, M. C. McCain, P. L. McGaughey, Y. Miake, T. E. Miller, A. Milov, S. Mioduszewski, G. C. Mishra, J. T. Mitchell, D. P. Morrison, J. M. Moss, T. V. Moukhanova, D. Mukhopadhyay, J. Murata, S. Nagamiya, Y. Nagata, J. L. Nagle, M. Naglis, T. Nakamura, J. Newby, M. Nguyen, B. E. Norman, A. S. Nyanin, J. Nystrand, E. O'Brien, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, H. Okada, K. Okada, O. O. Omiwade, A. Oskarsson, I. Otterlund, K. Ozawa, D. Pal, A. P T Palounek, V. Pantuev, V. Papavassiliou, J. Park, W. J. Park, S. F. Pate, H. Pei, J. C. Peng, H. Pereira, V. Peresedov, D. Yu Peressounko, C. Pinkenburg, R. P. Pisani, M. L. Purschke, A. K. Purwar, H. Qu, J. Rak, I. Ravinovich, K. F. Read, M. Reuter, K. Reygers, V. Riabov, Y. Riabov, G. Roche, A. Romana, M. Rosati, S. S E Rosendahl, P. Rosnet, P. Rukoyatkin, V. L. Rykov, S. S. Ryu, B. Sahlmueller, N. Saito, T. Sakaguchi, S. Sakai, V. Samsonov, H. D. Sato, S. Sato, S. Sawada, V. Semenov, R. Seto, D. Sharma, T. K. Shea, I. Shein, T. A. Shibata, K. Shigaki, M. Shimomura, T. Shohjoh, K. Shoji, A. Sickles, C. L. Silva, D. Silvermyr, K. S. Sim, C. P. Singh, V. Singh, S. Skutnik, W. C. Smith, A. Soldatov, R. A. Soltz, W. E. Sondheim, S. P. Sorensen, I. V. Sourikova, F. Staley, P. W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S. P. Stoll, T. Sugitate, C. Suire, J. P. Sullivan, J. Sziklai, T. Tabaru, S. Takagi, E. M. Takagui, A. Taketani, K. H. Tanaka, Y. Tanaka, K. Tanida, M. J. Tannenbaum, A. Taranenko, P. Tarján, T. L. Thomas, M. Togawa, J. Tojo, H. Torii, R. S. Towell, V. N. Tram, I. Tserruya, Y. Tsuchimoto, S. K. Tuli, H. Tydesjö, N. Tyurin, C. Vale, H. Valle, H. W. van Hecke, J. Velkovska, R. Vertesi, A. A. Vinogradov, E. Vznuzdaev, M. Wagner, X. R. Wang, Y. Watanabe, J. Wessels, S. N. White, N. Willis, D. Winter, C. L. Woody, M. Wysocki, W. Xie, A. Yanovich, S. Yokkaichi, G. R. Young, I. Younus, I. E. Yushmanov, W. A. Zajc, O. Zaudtke, C. Zhang, J. Zimányi, L. Zolin

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

We present the first measurement of photoproduction of J / ψ and of two-photon production of high-mass e+ e- pairs in electromagnetic (or ultra-peripheral) nucleus-nucleus interactions, using Au + Au data at sqrt(sN N) = 200 GeV. The events are tagged with forward neutrons emitted following Coulomb excitation of one or both Au{star operator} nuclei. The event sample consists of 28 events with me+ e- > 2 GeV / c2 with zero like-sign background. The measured cross sections at midrapidity of d σ / d y (J / ψ + X n, y = 0) = 76 ± 33 (stat) ± 11 (syst) μb and d2 σ / d m d y (e+ e- + X n, y = 0) = 86 ± 23 (stat) ± 16 (syst) μb / (GeV / c2) for me+ e- ∈ [2.0, 2.8] GeV / c2 have been compared and found to be consistent with models for photoproduction of J / ψ and QED based calculations of two-photon production of e+ e- pairs.

Original languageEnglish
Pages (from-to)321-329
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume679
Issue number4
DOIs
Publication statusPublished - 2009 Aug 31

Fingerprint

photoproduction
nuclei
collisions
photons
electromagnetism
neutrons
stars
operators
cross sections
excitation
interactions

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Photoproduction of J / ψ and of high mass e+ e- in ultra-peripheral Au + Au collisions at sqrt(sN N) = 200 GeV. / Afanasiev, S.; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Alexander, J.; Al-Jamel, A.; Aoki, K.; Aphecetche, L.; Armendariz, R.; Aronson, S. H.; Averbeck, R.; Awes, T. C.; Azmoun, B.; Babintsev, V.; Baldisseri, A.; Barish, K. N.; Barnes, P. D.; Bassalleck, B.; Bathe, S.; Batsouli, S.; Baublis, V.; Bauer, F.; Bazilevsky, A.; Belikov, S.; Bennett, R.; Berdnikov, Y.; Bjorndal, M. T.; Boissevain, J. G.; Borel, H.; Boyle, K.; Brooks, M. L.; Brown, D. S.; Bucher, D.; Buesching, H.; Bumazhnov, V.; Bunce, G.; Burward-Hoy, J. M.; Butsyk, S.; Campbell, S.; Chai, J. S.; Chernichenko, S.; Chiba, J.; Chi, C. Y.; Chiu, M.; Choi, I. J.; Chujo, T.; Cianciolo, V.; Cleven, C. R.; Cobigo, Y.; Cole, B. A.; Comets, M. P.; del Valle, Z. Conesa; Constantin, P.; Csanád, M.; Csörgo, T.; Dahms, T.; Das, K.; David, G.; Delagrange, H.; Denisov, A.; d'Enterria, D.; Deshpande, A.; Desmond, E. J.; Dietzsch, O.; Dion, A.; Drachenberg, J. L.; Drapier, O.; Drees, A.; Dubey, A. K.; Durum, A.; Dzhordzhadze, V.; Efremenko, Y. V.; Egdemir, J.; Enokizono, A.; En'yo, H.; Espagnon, B.; Esumi, S.; Fields, D. E.; Fleuret, F.; Fokin, S. L.; Forestier, B.; Fraenkel, Z.; Frantz, J. E.; Franz, A.; Frawley, A. D.; Fukao, Y.; Fung, S. Y.; Gadrat, S.; Gastineau, F.; Germain, M.; Glenn, A.; Gonin, M.; Gosset, J.; Goto, Y.; de Cassagnac, R. Granier; Grau, N.; Greene, S. V.; Perdekamp, M. Grosse; Gunji, T.; Gustafsson, H. Å; Hachiya, T.; Henni, A. Hadj; Haggerty, J. S.; Hagiwara, M. N.; Hamagaki, H.; Harada, H.; Hartouni, E. P.; Haruna, K.; Harvey, M.; Haslum, E.; Hasuko, K.; Hayano, R.; Heffner, M.; Hemmick, T. K.; Heuser, J. M.; He, X.; Hiejima, H.; Hill, J. C.; Hobbs, R.; Holmes, M.; Holzmann, W.; Homma, K.; Hong, Byungsik; Horaguchi, T.; Hur, M. G.; Ichihara, T.; Imai, K.; Inaba, M.; Isenhower, D.; Isenhower, L.; Ishihara, M.; Isobe, T.; Issah, M.; Isupov, A.; Jacak, B. V.; Jia, J.; Jin, J.; Jinnouchi, O.; Johnson, B. M.; Joo, K. S.; Jouan, D.; Kajihara, F.; Kametani, S.; Kamihara, N.; Kaneta, M.; Kang, J. H.; Kawagishi, T.; Kazantsev, A. V.; Kelly, S.; Khanzadeev, A.; Kim, D. J.; Kim, E.; Kim, Y. S.; Kinney, E.; Kiss, A.; Kistenev, E.; Kiyomichi, A.; Klein-Boesing, C.; Kochenda, L.; Kochetkov, V.; Komkov, B.; Konno, M.; Kotchetkov, D.; Kozlov, A.; Kroon, P. J.; Kunde, G. J.; Kurihara, N.; Kurita, K.; Kweon, M. J.; Kwon, Y.; Kyle, G. S.; Lacey, R.; Lajoie, J. G.; Lebedev, A.; Le Bornec, Y.; Leckey, S.; Lee, D. M.; Lee, M. K.; Leitch, M. J.; Leite, M. A L; Lim, H.; Litvinenko, A.; Liu, M. X.; Li, X. H.; Maguire, C. F.; Makdisi, Y. I.; Malakhov, A.; Malik, M. D.; Manko, V. I.; Masui, H.; Matathias, F.; McCain, M. C.; McGaughey, P. L.; Miake, Y.; Miller, T. E.; Milov, A.; Mioduszewski, S.; Mishra, G. C.; Mitchell, J. T.; Morrison, D. P.; Moss, J. M.; Moukhanova, T. V.; Mukhopadhyay, D.; Murata, J.; Nagamiya, S.; Nagata, Y.; Nagle, J. L.; Naglis, M.; Nakamura, T.; Newby, J.; Nguyen, M.; Norman, B. E.; Nyanin, A. S.; Nystrand, J.; O'Brien, E.; Ogilvie, C. A.; Ohnishi, H.; Ojha, I. D.; Okada, H.; Okada, K.; Omiwade, O. O.; Oskarsson, A.; Otterlund, I.; Ozawa, K.; Pal, D.; Palounek, A. P T; Pantuev, V.; Papavassiliou, V.; Park, J.; Park, W. J.; Pate, S. F.; Pei, H.; Peng, J. C.; Pereira, H.; Peresedov, V.; Peressounko, D. Yu; Pinkenburg, C.; Pisani, R. P.; Purschke, M. L.; Purwar, A. K.; Qu, H.; Rak, J.; Ravinovich, I.; Read, K. F.; Reuter, M.; Reygers, K.; Riabov, V.; Riabov, Y.; Roche, G.; Romana, A.; Rosati, M.; Rosendahl, S. S E; Rosnet, P.; Rukoyatkin, P.; Rykov, V. L.; Ryu, S. S.; Sahlmueller, B.; Saito, N.; Sakaguchi, T.; Sakai, S.; Samsonov, V.; Sato, H. D.; Sato, S.; Sawada, S.; Semenov, V.; Seto, R.; Sharma, D.; Shea, T. K.; Shein, I.; Shibata, T. A.; Shigaki, K.; Shimomura, M.; Shohjoh, T.; Shoji, K.; Sickles, A.; Silva, C. L.; Silvermyr, D.; Sim, K. S.; Singh, C. P.; Singh, V.; Skutnik, S.; Smith, W. C.; Soldatov, A.; Soltz, R. A.; Sondheim, W. E.; Sorensen, S. P.; Sourikova, I. V.; Staley, F.; Stankus, P. W.; Stenlund, E.; Stepanov, M.; Ster, A.; Stoll, S. P.; Sugitate, T.; Suire, C.; Sullivan, J. P.; Sziklai, J.; Tabaru, T.; Takagi, S.; Takagui, E. M.; Taketani, A.; Tanaka, K. H.; Tanaka, Y.; Tanida, K.; Tannenbaum, M. J.; Taranenko, A.; Tarján, P.; Thomas, T. L.; Togawa, M.; Tojo, J.; Torii, H.; Towell, R. S.; Tram, V. N.; Tserruya, I.; Tsuchimoto, Y.; Tuli, S. K.; Tydesjö, H.; Tyurin, N.; Vale, C.; Valle, H.; van Hecke, H. W.; Velkovska, J.; Vertesi, R.; Vinogradov, A. A.; Vznuzdaev, E.; Wagner, M.; Wang, X. R.; Watanabe, Y.; Wessels, J.; White, S. N.; Willis, N.; Winter, D.; Woody, C. L.; Wysocki, M.; Xie, W.; Yanovich, A.; Yokkaichi, S.; Young, G. R.; Younus, I.; Yushmanov, I. E.; Zajc, W. A.; Zaudtke, O.; Zhang, C.; Zimányi, J.; Zolin, L.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 679, No. 4, 31.08.2009, p. 321-329.

Research output: Contribution to journalArticle

Afanasiev, S, Aidala, C, Ajitanand, NN, Akiba, Y, Alexander, J, Al-Jamel, A, Aoki, K, Aphecetche, L, Armendariz, R, Aronson, SH, Averbeck, R, Awes, TC, Azmoun, B, Babintsev, V, Baldisseri, A, Barish, KN, Barnes, PD, Bassalleck, B, Bathe, S, Batsouli, S, Baublis, V, Bauer, F, Bazilevsky, A, Belikov, S, Bennett, R, Berdnikov, Y, Bjorndal, MT, Boissevain, JG, Borel, H, Boyle, K, Brooks, ML, Brown, DS, Bucher, D, Buesching, H, Bumazhnov, V, Bunce, G, Burward-Hoy, JM, Butsyk, S, Campbell, S, Chai, JS, Chernichenko, S, Chiba, J, Chi, CY, Chiu, M, Choi, IJ, Chujo, T, Cianciolo, V, Cleven, CR, Cobigo, Y, Cole, BA, Comets, MP, del Valle, ZC, Constantin, P, Csanád, M, Csörgo, T, Dahms, T, Das, K, David, G, Delagrange, H, Denisov, A, d'Enterria, D, Deshpande, A, Desmond, EJ, Dietzsch, O, Dion, A, Drachenberg, JL, Drapier, O, Drees, A, Dubey, AK, Durum, A, Dzhordzhadze, V, Efremenko, YV, Egdemir, J, Enokizono, A, En'yo, H, Espagnon, B, Esumi, S, Fields, DE, Fleuret, F, Fokin, SL, Forestier, B, Fraenkel, Z, Frantz, JE, Franz, A, Frawley, AD, Fukao, Y, Fung, SY, Gadrat, S, Gastineau, F, Germain, M, Glenn, A, Gonin, M, Gosset, J, Goto, Y, de Cassagnac, RG, Grau, N, Greene, SV, Perdekamp, MG, Gunji, T, Gustafsson, HÅ, Hachiya, T, Henni, AH, Haggerty, JS, Hagiwara, MN, Hamagaki, H, Harada, H, Hartouni, EP, Haruna, K, Harvey, M, Haslum, E, Hasuko, K, Hayano, R, Heffner, M, Hemmick, TK, Heuser, JM, He, X, Hiejima, H, Hill, JC, Hobbs, R, Holmes, M, Holzmann, W, Homma, K, Hong, B, Horaguchi, T, Hur, MG, Ichihara, T, Imai, K, Inaba, M, Isenhower, D, Isenhower, L, Ishihara, M, Isobe, T, Issah, M, Isupov, A, Jacak, BV, Jia, J, Jin, J, Jinnouchi, O, Johnson, BM, Joo, KS, Jouan, D, Kajihara, F, Kametani, S, Kamihara, N, Kaneta, M, Kang, JH, Kawagishi, T, Kazantsev, AV, Kelly, S, Khanzadeev, A, Kim, DJ, Kim, E, Kim, YS, Kinney, E, Kiss, A, Kistenev, E, Kiyomichi, A, Klein-Boesing, C, Kochenda, L, Kochetkov, V, Komkov, B, Konno, M, Kotchetkov, D, Kozlov, A, Kroon, PJ, Kunde, GJ, Kurihara, N, Kurita, K, Kweon, MJ, Kwon, Y, Kyle, GS, Lacey, R, Lajoie, JG, Lebedev, A, Le Bornec, Y, Leckey, S, Lee, DM, Lee, MK, Leitch, MJ, Leite, MAL, Lim, H, Litvinenko, A, Liu, MX, Li, XH, Maguire, CF, Makdisi, YI, Malakhov, A, Malik, MD, Manko, VI, Masui, H, Matathias, F, McCain, MC, McGaughey, PL, Miake, Y, Miller, TE, Milov, A, Mioduszewski, S, Mishra, GC, Mitchell, JT, Morrison, DP, Moss, JM, Moukhanova, TV, Mukhopadhyay, D, Murata, J, Nagamiya, S, Nagata, Y, Nagle, JL, Naglis, M, Nakamura, T, Newby, J, Nguyen, M, Norman, BE, Nyanin, AS, Nystrand, J, O'Brien, E, Ogilvie, CA, Ohnishi, H, Ojha, ID, Okada, H, Okada, K, Omiwade, OO, Oskarsson, A, Otterlund, I, Ozawa, K, Pal, D, Palounek, APT, Pantuev, V, Papavassiliou, V, Park, J, Park, WJ, Pate, SF, Pei, H, Peng, JC, Pereira, H, Peresedov, V, Peressounko, DY, Pinkenburg, C, Pisani, RP, Purschke, ML, Purwar, AK, Qu, H, Rak, J, Ravinovich, I, Read, KF, Reuter, M, Reygers, K, Riabov, V, Riabov, Y, Roche, G, Romana, A, Rosati, M, Rosendahl, SSE, Rosnet, P, Rukoyatkin, P, Rykov, VL, Ryu, SS, Sahlmueller, B, Saito, N, Sakaguchi, T, Sakai, S, Samsonov, V, Sato, HD, Sato, S, Sawada, S, Semenov, V, Seto, R, Sharma, D, Shea, TK, Shein, I, Shibata, TA, Shigaki, K, Shimomura, M, Shohjoh, T, Shoji, K, Sickles, A, Silva, CL, Silvermyr, D, Sim, KS, Singh, CP, Singh, V, Skutnik, S, Smith, WC, Soldatov, A, Soltz, RA, Sondheim, WE, Sorensen, SP, Sourikova, IV, Staley, F, Stankus, PW, Stenlund, E, Stepanov, M, Ster, A, Stoll, SP, Sugitate, T, Suire, C, Sullivan, JP, Sziklai, J, Tabaru, T, Takagi, S, Takagui, EM, Taketani, A, Tanaka, KH, Tanaka, Y, Tanida, K, Tannenbaum, MJ, Taranenko, A, Tarján, P, Thomas, TL, Togawa, M, Tojo, J, Torii, H, Towell, RS, Tram, VN, Tserruya, I, Tsuchimoto, Y, Tuli, SK, Tydesjö, H, Tyurin, N, Vale, C, Valle, H, van Hecke, HW, Velkovska, J, Vertesi, R, Vinogradov, AA, Vznuzdaev, E, Wagner, M, Wang, XR, Watanabe, Y, Wessels, J, White, SN, Willis, N, Winter, D, Woody, CL, Wysocki, M, Xie, W, Yanovich, A, Yokkaichi, S, Young, GR, Younus, I, Yushmanov, IE, Zajc, WA, Zaudtke, O, Zhang, C, Zimányi, J & Zolin, L 2009, 'Photoproduction of J / ψ and of high mass e+ e- in ultra-peripheral Au + Au collisions at sqrt(sN N) = 200 GeV', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 679, no. 4, pp. 321-329. https://doi.org/10.1016/j.physletb.2009.07.061
Afanasiev, S. ; Aidala, C. ; Ajitanand, N. N. ; Akiba, Y. ; Alexander, J. ; Al-Jamel, A. ; Aoki, K. ; Aphecetche, L. ; Armendariz, R. ; Aronson, S. H. ; Averbeck, R. ; Awes, T. C. ; Azmoun, B. ; Babintsev, V. ; Baldisseri, A. ; Barish, K. N. ; Barnes, P. D. ; Bassalleck, B. ; Bathe, S. ; Batsouli, S. ; Baublis, V. ; Bauer, F. ; Bazilevsky, A. ; Belikov, S. ; Bennett, R. ; Berdnikov, Y. ; Bjorndal, M. T. ; Boissevain, J. G. ; Borel, H. ; Boyle, K. ; Brooks, M. L. ; Brown, D. S. ; Bucher, D. ; Buesching, H. ; Bumazhnov, V. ; Bunce, G. ; Burward-Hoy, J. M. ; Butsyk, S. ; Campbell, S. ; Chai, J. S. ; Chernichenko, S. ; Chiba, J. ; Chi, C. Y. ; Chiu, M. ; Choi, I. J. ; Chujo, T. ; Cianciolo, V. ; Cleven, C. R. ; Cobigo, Y. ; Cole, B. A. ; Comets, M. P. ; del Valle, Z. Conesa ; Constantin, P. ; Csanád, M. ; Csörgo, T. ; Dahms, T. ; Das, K. ; David, G. ; Delagrange, H. ; Denisov, A. ; d'Enterria, D. ; Deshpande, A. ; Desmond, E. J. ; Dietzsch, O. ; Dion, A. ; Drachenberg, J. L. ; Drapier, O. ; Drees, A. ; Dubey, A. K. ; Durum, A. ; Dzhordzhadze, V. ; Efremenko, Y. V. ; Egdemir, J. ; Enokizono, A. ; En'yo, H. ; Espagnon, B. ; Esumi, S. ; Fields, D. E. ; Fleuret, F. ; Fokin, S. L. ; Forestier, B. ; Fraenkel, Z. ; Frantz, J. E. ; Franz, A. ; Frawley, A. D. ; Fukao, Y. ; Fung, S. Y. ; Gadrat, S. ; Gastineau, F. ; Germain, M. ; Glenn, A. ; Gonin, M. ; Gosset, J. ; Goto, Y. ; de Cassagnac, R. Granier ; Grau, N. ; Greene, S. V. ; Perdekamp, M. Grosse ; Gunji, T. ; Gustafsson, H. Å ; Hachiya, T. ; Henni, A. Hadj ; Haggerty, J. S. ; Hagiwara, M. N. ; Hamagaki, H. ; Harada, H. ; Hartouni, E. P. ; Haruna, K. ; Harvey, M. ; Haslum, E. ; Hasuko, K. ; Hayano, R. ; Heffner, M. ; Hemmick, T. K. ; Heuser, J. M. ; He, X. ; Hiejima, H. ; Hill, J. C. ; Hobbs, R. ; Holmes, M. ; Holzmann, W. ; Homma, K. ; Hong, Byungsik ; Horaguchi, T. ; Hur, M. G. ; Ichihara, T. ; Imai, K. ; Inaba, M. ; Isenhower, D. ; Isenhower, L. ; Ishihara, M. ; Isobe, T. ; Issah, M. ; Isupov, A. ; Jacak, B. V. ; Jia, J. ; Jin, J. ; Jinnouchi, O. ; Johnson, B. M. ; Joo, K. S. ; Jouan, D. ; Kajihara, F. ; Kametani, S. ; Kamihara, N. ; Kaneta, M. ; Kang, J. H. ; Kawagishi, T. ; Kazantsev, A. V. ; Kelly, S. ; Khanzadeev, A. ; Kim, D. J. ; Kim, E. ; Kim, Y. S. ; Kinney, E. ; Kiss, A. ; Kistenev, E. ; Kiyomichi, A. ; Klein-Boesing, C. ; Kochenda, L. ; Kochetkov, V. ; Komkov, B. ; Konno, M. ; Kotchetkov, D. ; Kozlov, A. ; Kroon, P. J. ; Kunde, G. J. ; Kurihara, N. ; Kurita, K. ; Kweon, M. J. ; Kwon, Y. ; Kyle, G. S. ; Lacey, R. ; Lajoie, J. G. ; Lebedev, A. ; Le Bornec, Y. ; Leckey, S. ; Lee, D. M. ; Lee, M. K. ; Leitch, M. J. ; Leite, M. A L ; Lim, H. ; Litvinenko, A. ; Liu, M. X. ; Li, X. H. ; Maguire, C. F. ; Makdisi, Y. I. ; Malakhov, A. ; Malik, M. D. ; Manko, V. I. ; Masui, H. ; Matathias, F. ; McCain, M. C. ; McGaughey, P. L. ; Miake, Y. ; Miller, T. E. ; Milov, A. ; Mioduszewski, S. ; Mishra, G. C. ; Mitchell, J. T. ; Morrison, D. P. ; Moss, J. M. ; Moukhanova, T. V. ; Mukhopadhyay, D. ; Murata, J. ; Nagamiya, S. ; Nagata, Y. ; Nagle, J. L. ; Naglis, M. ; Nakamura, T. ; Newby, J. ; Nguyen, M. ; Norman, B. E. ; Nyanin, A. S. ; Nystrand, J. ; O'Brien, E. ; Ogilvie, C. A. ; Ohnishi, H. ; Ojha, I. D. ; Okada, H. ; Okada, K. ; Omiwade, O. O. ; Oskarsson, A. ; Otterlund, I. ; Ozawa, K. ; Pal, D. ; Palounek, A. P T ; Pantuev, V. ; Papavassiliou, V. ; Park, J. ; Park, W. J. ; Pate, S. F. ; Pei, H. ; Peng, J. C. ; Pereira, H. ; Peresedov, V. ; Peressounko, D. Yu ; Pinkenburg, C. ; Pisani, R. P. ; Purschke, M. L. ; Purwar, A. K. ; Qu, H. ; Rak, J. ; Ravinovich, I. ; Read, K. F. ; Reuter, M. ; Reygers, K. ; Riabov, V. ; Riabov, Y. ; Roche, G. ; Romana, A. ; Rosati, M. ; Rosendahl, S. S E ; Rosnet, P. ; Rukoyatkin, P. ; Rykov, V. L. ; Ryu, S. S. ; Sahlmueller, B. ; Saito, N. ; Sakaguchi, T. ; Sakai, S. ; Samsonov, V. ; Sato, H. D. ; Sato, S. ; Sawada, S. ; Semenov, V. ; Seto, R. ; Sharma, D. ; Shea, T. K. ; Shein, I. ; Shibata, T. A. ; Shigaki, K. ; Shimomura, M. ; Shohjoh, T. ; Shoji, K. ; Sickles, A. ; Silva, C. L. ; Silvermyr, D. ; Sim, K. S. ; Singh, C. P. ; Singh, V. ; Skutnik, S. ; Smith, W. C. ; Soldatov, A. ; Soltz, R. A. ; Sondheim, W. E. ; Sorensen, S. P. ; Sourikova, I. V. ; Staley, F. ; Stankus, P. W. ; Stenlund, E. ; Stepanov, M. ; Ster, A. ; Stoll, S. P. ; Sugitate, T. ; Suire, C. ; Sullivan, J. P. ; Sziklai, J. ; Tabaru, T. ; Takagi, S. ; Takagui, E. M. ; Taketani, A. ; Tanaka, K. H. ; Tanaka, Y. ; Tanida, K. ; Tannenbaum, M. J. ; Taranenko, A. ; Tarján, P. ; Thomas, T. L. ; Togawa, M. ; Tojo, J. ; Torii, H. ; Towell, R. S. ; Tram, V. N. ; Tserruya, I. ; Tsuchimoto, Y. ; Tuli, S. K. ; Tydesjö, H. ; Tyurin, N. ; Vale, C. ; Valle, H. ; van Hecke, H. W. ; Velkovska, J. ; Vertesi, R. ; Vinogradov, A. A. ; Vznuzdaev, E. ; Wagner, M. ; Wang, X. R. ; Watanabe, Y. ; Wessels, J. ; White, S. N. ; Willis, N. ; Winter, D. ; Woody, C. L. ; Wysocki, M. ; Xie, W. ; Yanovich, A. ; Yokkaichi, S. ; Young, G. R. ; Younus, I. ; Yushmanov, I. E. ; Zajc, W. A. ; Zaudtke, O. ; Zhang, C. ; Zimányi, J. ; Zolin, L. / Photoproduction of J / ψ and of high mass e+ e- in ultra-peripheral Au + Au collisions at sqrt(sN N) = 200 GeV. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2009 ; Vol. 679, No. 4. pp. 321-329.
@article{c5f6be238c9548a2800fce579dcb4faf,
title = "Photoproduction of J / ψ and of high mass e+ e- in ultra-peripheral Au + Au collisions at sqrt(sN N) = 200 GeV",
abstract = "We present the first measurement of photoproduction of J / ψ and of two-photon production of high-mass e+ e- pairs in electromagnetic (or ultra-peripheral) nucleus-nucleus interactions, using Au + Au data at sqrt(sN N) = 200 GeV. The events are tagged with forward neutrons emitted following Coulomb excitation of one or both Au{star operator} nuclei. The event sample consists of 28 events with me+ e- > 2 GeV / c2 with zero like-sign background. The measured cross sections at midrapidity of d σ / d y (J / ψ + X n, y = 0) = 76 ± 33 (stat) ± 11 (syst) μb and d2 σ / d m d y (e+ e- + X n, y = 0) = 86 ± 23 (stat) ± 16 (syst) μb / (GeV / c2) for me+ e- ∈ [2.0, 2.8] GeV / c2 have been compared and found to be consistent with models for photoproduction of J / ψ and QED based calculations of two-photon production of e+ e- pairs.",
author = "S. Afanasiev and C. Aidala and Ajitanand, {N. N.} and Y. Akiba and J. Alexander and A. Al-Jamel and K. Aoki and L. Aphecetche and R. Armendariz and Aronson, {S. H.} and R. Averbeck and Awes, {T. C.} and B. Azmoun and V. Babintsev and A. Baldisseri and Barish, {K. N.} and Barnes, {P. D.} and B. Bassalleck and S. Bathe and S. Batsouli and V. Baublis and F. Bauer and A. Bazilevsky and S. Belikov and R. Bennett and Y. Berdnikov and Bjorndal, {M. T.} and Boissevain, {J. G.} and H. Borel and K. Boyle and Brooks, {M. L.} and Brown, {D. S.} and D. Bucher and H. Buesching and V. Bumazhnov and G. Bunce and Burward-Hoy, {J. M.} and S. Butsyk and S. Campbell and Chai, {J. S.} and S. Chernichenko and J. Chiba and Chi, {C. Y.} and M. Chiu and Choi, {I. J.} and T. Chujo and V. Cianciolo and Cleven, {C. R.} and Y. Cobigo and Cole, {B. A.} and Comets, {M. P.} and {del Valle}, {Z. Conesa} and P. Constantin and M. Csan{\'a}d and T. Cs{\"o}rgo and T. Dahms and K. Das and G. David and H. Delagrange and A. Denisov and D. d'Enterria and A. Deshpande and Desmond, {E. J.} and O. Dietzsch and A. Dion and Drachenberg, {J. L.} and O. Drapier and A. Drees and Dubey, {A. K.} and A. Durum and V. Dzhordzhadze and Efremenko, {Y. V.} and J. Egdemir and A. Enokizono and H. En'yo and B. Espagnon and S. Esumi and Fields, {D. E.} and F. Fleuret and Fokin, {S. L.} and B. Forestier and Z. Fraenkel and Frantz, {J. E.} and A. Franz and Frawley, {A. D.} and Y. Fukao and Fung, {S. Y.} and S. Gadrat and F. Gastineau and M. Germain and A. Glenn and M. Gonin and J. Gosset and Y. Goto and {de Cassagnac}, {R. Granier} and N. Grau and Greene, {S. V.} and Perdekamp, {M. Grosse} and T. Gunji and Gustafsson, {H. {\AA}} and T. Hachiya and Henni, {A. Hadj} and Haggerty, {J. S.} and Hagiwara, {M. N.} and H. Hamagaki and H. Harada and Hartouni, {E. P.} and K. Haruna and M. Harvey and E. Haslum and K. Hasuko and R. Hayano and M. Heffner and Hemmick, {T. K.} and Heuser, {J. M.} and X. He and H. Hiejima and Hill, {J. C.} and R. Hobbs and M. Holmes and W. Holzmann and K. Homma and Byungsik Hong and T. Horaguchi and Hur, {M. G.} and T. Ichihara and K. Imai and M. Inaba and D. Isenhower and L. Isenhower and M. Ishihara and T. Isobe and M. Issah and A. Isupov and Jacak, {B. V.} and J. Jia and J. Jin and O. Jinnouchi and Johnson, {B. M.} and Joo, {K. S.} and D. Jouan and F. Kajihara and S. Kametani and N. Kamihara and M. Kaneta and Kang, {J. H.} and T. Kawagishi and Kazantsev, {A. V.} and S. Kelly and A. Khanzadeev and Kim, {D. J.} and E. Kim and Kim, {Y. S.} and E. Kinney and A. Kiss and E. Kistenev and A. Kiyomichi and C. Klein-Boesing and L. Kochenda and V. Kochetkov and B. Komkov and M. Konno and D. Kotchetkov and A. Kozlov and Kroon, {P. J.} and Kunde, {G. J.} and N. Kurihara and K. Kurita and Kweon, {M. J.} and Y. Kwon and Kyle, {G. S.} and R. Lacey and Lajoie, {J. G.} and A. Lebedev and {Le Bornec}, Y. and S. Leckey and Lee, {D. M.} and Lee, {M. K.} and Leitch, {M. J.} and Leite, {M. A L} and H. Lim and A. Litvinenko and Liu, {M. X.} and Li, {X. H.} and Maguire, {C. F.} and Makdisi, {Y. I.} and A. Malakhov and Malik, {M. D.} and Manko, {V. I.} and H. Masui and F. Matathias and McCain, {M. C.} and McGaughey, {P. L.} and Y. Miake and Miller, {T. E.} and A. Milov and S. Mioduszewski and Mishra, {G. C.} and Mitchell, {J. T.} and Morrison, {D. P.} and Moss, {J. M.} and Moukhanova, {T. V.} and D. Mukhopadhyay and J. Murata and S. Nagamiya and Y. Nagata and Nagle, {J. L.} and M. Naglis and T. Nakamura and J. Newby and M. Nguyen and Norman, {B. E.} and Nyanin, {A. S.} and J. Nystrand and E. O'Brien and Ogilvie, {C. A.} and H. Ohnishi and Ojha, {I. D.} and H. Okada and K. Okada and Omiwade, {O. O.} and A. Oskarsson and I. Otterlund and K. Ozawa and D. Pal and Palounek, {A. P T} and V. Pantuev and V. Papavassiliou and J. Park and Park, {W. J.} and Pate, {S. F.} and H. Pei and Peng, {J. C.} and H. Pereira and V. Peresedov and Peressounko, {D. Yu} and C. Pinkenburg and Pisani, {R. P.} and Purschke, {M. L.} and Purwar, {A. K.} and H. Qu and J. Rak and I. Ravinovich and Read, {K. F.} and M. Reuter and K. Reygers and V. Riabov and Y. Riabov and G. Roche and A. Romana and M. Rosati and Rosendahl, {S. S E} and P. Rosnet and P. Rukoyatkin and Rykov, {V. L.} and Ryu, {S. S.} and B. Sahlmueller and N. Saito and T. Sakaguchi and S. Sakai and V. Samsonov and Sato, {H. D.} and S. Sato and S. Sawada and V. Semenov and R. Seto and D. Sharma and Shea, {T. K.} and I. Shein and Shibata, {T. A.} and K. Shigaki and M. Shimomura and T. Shohjoh and K. Shoji and A. Sickles and Silva, {C. L.} and D. Silvermyr and Sim, {K. S.} and Singh, {C. P.} and V. Singh and S. Skutnik and Smith, {W. C.} and A. Soldatov and Soltz, {R. A.} and Sondheim, {W. E.} and Sorensen, {S. P.} and Sourikova, {I. V.} and F. Staley and Stankus, {P. W.} and E. Stenlund and M. Stepanov and A. Ster and Stoll, {S. P.} and T. Sugitate and C. Suire and Sullivan, {J. P.} and J. Sziklai and T. Tabaru and S. Takagi and Takagui, {E. M.} and A. Taketani and Tanaka, {K. H.} and Y. Tanaka and K. Tanida and Tannenbaum, {M. J.} and A. Taranenko and P. Tarj{\'a}n and Thomas, {T. L.} and M. Togawa and J. Tojo and H. Torii and Towell, {R. S.} and Tram, {V. N.} and I. Tserruya and Y. Tsuchimoto and Tuli, {S. K.} and H. Tydesj{\"o} and N. Tyurin and C. Vale and H. Valle and {van Hecke}, {H. W.} and J. Velkovska and R. Vertesi and Vinogradov, {A. A.} and E. Vznuzdaev and M. Wagner and Wang, {X. R.} and Y. Watanabe and J. Wessels and White, {S. N.} and N. Willis and D. Winter and Woody, {C. L.} and M. Wysocki and W. Xie and A. Yanovich and S. Yokkaichi and Young, {G. R.} and I. Younus and Yushmanov, {I. E.} and Zajc, {W. A.} and O. Zaudtke and C. Zhang and J. Zim{\'a}nyi and L. Zolin",
year = "2009",
month = "8",
day = "31",
doi = "10.1016/j.physletb.2009.07.061",
language = "English",
volume = "679",
pages = "321--329",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
number = "4",

}

TY - JOUR

T1 - Photoproduction of J / ψ and of high mass e+ e- in ultra-peripheral Au + Au collisions at sqrt(sN N) = 200 GeV

AU - Afanasiev, S.

AU - Aidala, C.

AU - Ajitanand, N. N.

AU - Akiba, Y.

AU - Alexander, J.

AU - Al-Jamel, A.

AU - Aoki, K.

AU - Aphecetche, L.

AU - Armendariz, R.

AU - Aronson, S. H.

AU - Averbeck, R.

AU - Awes, T. C.

AU - Azmoun, B.

AU - Babintsev, V.

AU - Baldisseri, A.

AU - Barish, K. N.

AU - Barnes, P. D.

AU - Bassalleck, B.

AU - Bathe, S.

AU - Batsouli, S.

AU - Baublis, V.

AU - Bauer, F.

AU - Bazilevsky, A.

AU - Belikov, S.

AU - Bennett, R.

AU - Berdnikov, Y.

AU - Bjorndal, M. T.

AU - Boissevain, J. G.

AU - Borel, H.

AU - Boyle, K.

AU - Brooks, M. L.

AU - Brown, D. S.

AU - Bucher, D.

AU - Buesching, H.

AU - Bumazhnov, V.

AU - Bunce, G.

AU - Burward-Hoy, J. M.

AU - Butsyk, S.

AU - Campbell, S.

AU - Chai, J. S.

AU - Chernichenko, S.

AU - Chiba, J.

AU - Chi, C. Y.

AU - Chiu, M.

AU - Choi, I. J.

AU - Chujo, T.

AU - Cianciolo, V.

AU - Cleven, C. R.

AU - Cobigo, Y.

AU - Cole, B. A.

AU - Comets, M. P.

AU - del Valle, Z. Conesa

AU - Constantin, P.

AU - Csanád, M.

AU - Csörgo, T.

AU - Dahms, T.

AU - Das, K.

AU - David, G.

AU - Delagrange, H.

AU - Denisov, A.

AU - d'Enterria, D.

AU - Deshpande, A.

AU - Desmond, E. J.

AU - Dietzsch, O.

AU - Dion, A.

AU - Drachenberg, J. L.

AU - Drapier, O.

AU - Drees, A.

AU - Dubey, A. K.

AU - Durum, A.

AU - Dzhordzhadze, V.

AU - Efremenko, Y. V.

AU - Egdemir, J.

AU - Enokizono, A.

AU - En'yo, H.

AU - Espagnon, B.

AU - Esumi, S.

AU - Fields, D. E.

AU - Fleuret, F.

AU - Fokin, S. L.

AU - Forestier, B.

AU - Fraenkel, Z.

AU - Frantz, J. E.

AU - Franz, A.

AU - Frawley, A. D.

AU - Fukao, Y.

AU - Fung, S. Y.

AU - Gadrat, S.

AU - Gastineau, F.

AU - Germain, M.

AU - Glenn, A.

AU - Gonin, M.

AU - Gosset, J.

AU - Goto, Y.

AU - de Cassagnac, R. Granier

AU - Grau, N.

AU - Greene, S. V.

AU - Perdekamp, M. Grosse

AU - Gunji, T.

AU - Gustafsson, H. Å

AU - Hachiya, T.

AU - Henni, A. Hadj

AU - Haggerty, J. S.

AU - Hagiwara, M. N.

AU - Hamagaki, H.

AU - Harada, H.

AU - Hartouni, E. P.

AU - Haruna, K.

AU - Harvey, M.

AU - Haslum, E.

AU - Hasuko, K.

AU - Hayano, R.

AU - Heffner, M.

AU - Hemmick, T. K.

AU - Heuser, J. M.

AU - He, X.

AU - Hiejima, H.

AU - Hill, J. C.

AU - Hobbs, R.

AU - Holmes, M.

AU - Holzmann, W.

AU - Homma, K.

AU - Hong, Byungsik

AU - Horaguchi, T.

AU - Hur, M. G.

AU - Ichihara, T.

AU - Imai, K.

AU - Inaba, M.

AU - Isenhower, D.

AU - Isenhower, L.

AU - Ishihara, M.

AU - Isobe, T.

AU - Issah, M.

AU - Isupov, A.

AU - Jacak, B. V.

AU - Jia, J.

AU - Jin, J.

AU - Jinnouchi, O.

AU - Johnson, B. M.

AU - Joo, K. S.

AU - Jouan, D.

AU - Kajihara, F.

AU - Kametani, S.

AU - Kamihara, N.

AU - Kaneta, M.

AU - Kang, J. H.

AU - Kawagishi, T.

AU - Kazantsev, A. V.

AU - Kelly, S.

AU - Khanzadeev, A.

AU - Kim, D. J.

AU - Kim, E.

AU - Kim, Y. S.

AU - Kinney, E.

AU - Kiss, A.

AU - Kistenev, E.

AU - Kiyomichi, A.

AU - Klein-Boesing, C.

AU - Kochenda, L.

AU - Kochetkov, V.

AU - Komkov, B.

AU - Konno, M.

AU - Kotchetkov, D.

AU - Kozlov, A.

AU - Kroon, P. J.

AU - Kunde, G. J.

AU - Kurihara, N.

AU - Kurita, K.

AU - Kweon, M. J.

AU - Kwon, Y.

AU - Kyle, G. S.

AU - Lacey, R.

AU - Lajoie, J. G.

AU - Lebedev, A.

AU - Le Bornec, Y.

AU - Leckey, S.

AU - Lee, D. M.

AU - Lee, M. K.

AU - Leitch, M. J.

AU - Leite, M. A L

AU - Lim, H.

AU - Litvinenko, A.

AU - Liu, M. X.

AU - Li, X. H.

AU - Maguire, C. F.

AU - Makdisi, Y. I.

AU - Malakhov, A.

AU - Malik, M. D.

AU - Manko, V. I.

AU - Masui, H.

AU - Matathias, F.

AU - McCain, M. C.

AU - McGaughey, P. L.

AU - Miake, Y.

AU - Miller, T. E.

AU - Milov, A.

AU - Mioduszewski, S.

AU - Mishra, G. C.

AU - Mitchell, J. T.

AU - Morrison, D. P.

AU - Moss, J. M.

AU - Moukhanova, T. V.

AU - Mukhopadhyay, D.

AU - Murata, J.

AU - Nagamiya, S.

AU - Nagata, Y.

AU - Nagle, J. L.

AU - Naglis, M.

AU - Nakamura, T.

AU - Newby, J.

AU - Nguyen, M.

AU - Norman, B. E.

AU - Nyanin, A. S.

AU - Nystrand, J.

AU - O'Brien, E.

AU - Ogilvie, C. A.

AU - Ohnishi, H.

AU - Ojha, I. D.

AU - Okada, H.

AU - Okada, K.

AU - Omiwade, O. O.

AU - Oskarsson, A.

AU - Otterlund, I.

AU - Ozawa, K.

AU - Pal, D.

AU - Palounek, A. P T

AU - Pantuev, V.

AU - Papavassiliou, V.

AU - Park, J.

AU - Park, W. J.

AU - Pate, S. F.

AU - Pei, H.

AU - Peng, J. C.

AU - Pereira, H.

AU - Peresedov, V.

AU - Peressounko, D. Yu

AU - Pinkenburg, C.

AU - Pisani, R. P.

AU - Purschke, M. L.

AU - Purwar, A. K.

AU - Qu, H.

AU - Rak, J.

AU - Ravinovich, I.

AU - Read, K. F.

AU - Reuter, M.

AU - Reygers, K.

AU - Riabov, V.

AU - Riabov, Y.

AU - Roche, G.

AU - Romana, A.

AU - Rosati, M.

AU - Rosendahl, S. S E

AU - Rosnet, P.

AU - Rukoyatkin, P.

AU - Rykov, V. L.

AU - Ryu, S. S.

AU - Sahlmueller, B.

AU - Saito, N.

AU - Sakaguchi, T.

AU - Sakai, S.

AU - Samsonov, V.

AU - Sato, H. D.

AU - Sato, S.

AU - Sawada, S.

AU - Semenov, V.

AU - Seto, R.

AU - Sharma, D.

AU - Shea, T. K.

AU - Shein, I.

AU - Shibata, T. A.

AU - Shigaki, K.

AU - Shimomura, M.

AU - Shohjoh, T.

AU - Shoji, K.

AU - Sickles, A.

AU - Silva, C. L.

AU - Silvermyr, D.

AU - Sim, K. S.

AU - Singh, C. P.

AU - Singh, V.

AU - Skutnik, S.

AU - Smith, W. C.

AU - Soldatov, A.

AU - Soltz, R. A.

AU - Sondheim, W. E.

AU - Sorensen, S. P.

AU - Sourikova, I. V.

AU - Staley, F.

AU - Stankus, P. W.

AU - Stenlund, E.

AU - Stepanov, M.

AU - Ster, A.

AU - Stoll, S. P.

AU - Sugitate, T.

AU - Suire, C.

AU - Sullivan, J. P.

AU - Sziklai, J.

AU - Tabaru, T.

AU - Takagi, S.

AU - Takagui, E. M.

AU - Taketani, A.

AU - Tanaka, K. H.

AU - Tanaka, Y.

AU - Tanida, K.

AU - Tannenbaum, M. J.

AU - Taranenko, A.

AU - Tarján, P.

AU - Thomas, T. L.

AU - Togawa, M.

AU - Tojo, J.

AU - Torii, H.

AU - Towell, R. S.

AU - Tram, V. N.

AU - Tserruya, I.

AU - Tsuchimoto, Y.

AU - Tuli, S. K.

AU - Tydesjö, H.

AU - Tyurin, N.

AU - Vale, C.

AU - Valle, H.

AU - van Hecke, H. W.

AU - Velkovska, J.

AU - Vertesi, R.

AU - Vinogradov, A. A.

AU - Vznuzdaev, E.

AU - Wagner, M.

AU - Wang, X. R.

AU - Watanabe, Y.

AU - Wessels, J.

AU - White, S. N.

AU - Willis, N.

AU - Winter, D.

AU - Woody, C. L.

AU - Wysocki, M.

AU - Xie, W.

AU - Yanovich, A.

AU - Yokkaichi, S.

AU - Young, G. R.

AU - Younus, I.

AU - Yushmanov, I. E.

AU - Zajc, W. A.

AU - Zaudtke, O.

AU - Zhang, C.

AU - Zimányi, J.

AU - Zolin, L.

PY - 2009/8/31

Y1 - 2009/8/31

N2 - We present the first measurement of photoproduction of J / ψ and of two-photon production of high-mass e+ e- pairs in electromagnetic (or ultra-peripheral) nucleus-nucleus interactions, using Au + Au data at sqrt(sN N) = 200 GeV. The events are tagged with forward neutrons emitted following Coulomb excitation of one or both Au{star operator} nuclei. The event sample consists of 28 events with me+ e- > 2 GeV / c2 with zero like-sign background. The measured cross sections at midrapidity of d σ / d y (J / ψ + X n, y = 0) = 76 ± 33 (stat) ± 11 (syst) μb and d2 σ / d m d y (e+ e- + X n, y = 0) = 86 ± 23 (stat) ± 16 (syst) μb / (GeV / c2) for me+ e- ∈ [2.0, 2.8] GeV / c2 have been compared and found to be consistent with models for photoproduction of J / ψ and QED based calculations of two-photon production of e+ e- pairs.

AB - We present the first measurement of photoproduction of J / ψ and of two-photon production of high-mass e+ e- pairs in electromagnetic (or ultra-peripheral) nucleus-nucleus interactions, using Au + Au data at sqrt(sN N) = 200 GeV. The events are tagged with forward neutrons emitted following Coulomb excitation of one or both Au{star operator} nuclei. The event sample consists of 28 events with me+ e- > 2 GeV / c2 with zero like-sign background. The measured cross sections at midrapidity of d σ / d y (J / ψ + X n, y = 0) = 76 ± 33 (stat) ± 11 (syst) μb and d2 σ / d m d y (e+ e- + X n, y = 0) = 86 ± 23 (stat) ± 16 (syst) μb / (GeV / c2) for me+ e- ∈ [2.0, 2.8] GeV / c2 have been compared and found to be consistent with models for photoproduction of J / ψ and QED based calculations of two-photon production of e+ e- pairs.

UR - http://www.scopus.com/inward/record.url?scp=69049083802&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=69049083802&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2009.07.061

DO - 10.1016/j.physletb.2009.07.061

M3 - Article

VL - 679

SP - 321

EP - 329

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 4

ER -