Observation of Bs0→Ds(*)+Ds(*)- using e⊃+e⊃- collisions and a determination of the Bs-B̄s width difference ΔΓs

S. Esen, A. J. Schwartz, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, M. Bischofberger, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, M. C. Chang, P. Chang, A. ChenP. Chen, B. G. Cheon, C. C. Chiang, Y. Choi, J. Dalseno, M. Dash, Z. Doležl, Z. Drásal, A. Drutskoy, S. Eidelman, P. Goldenzweig, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, T. Higuchi, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, M. Iwabuchi, N. J. Joshi, T. Julius, J. H. Kang, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, J. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, T. Kuhr, T. Kumita, Y. J. Kwon, S. H. Kyeong, J. S. Lange, S. H. Lee, Y. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, H. Miyata, R. Mizuk, G. B. Mohanty, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Neubauer, S. Nishida, O. Nitoh, T. Ohshima, S. Okuno, S. L. Olsen, P. Pakhlov, C. W. Park, H. Park, H. K. Park, M. Petrič, L. E. Piilonen, M. Röhrken, S. Ryu, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. G. Shiu, P. Smerkol, E. Solovieva, M. Starič, K. Sumisawa, T. Sumiyoshi, Y. Teramoto, K. Trabelsi, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, C. H. Wang, M. Z. Wang, P. Wang, Y. Watanabe, R. Wedd, J. Wicht, Eunil Won, B. D. Yabsley, Y. Yamashita, Z. P. Zhang, V. Zhilich, A. Zupanc

Research output: Contribution to journalArticle

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Abstract

We have made the first observation of Bs0→Ds(*)+Ds(*)- decays using 23.6fb⊃-1 of data recorded by the Belle experiment running on the Υ(5S) resonance. The branching fractions are measured to be B(Bs0→Ds+Ds-)=(1.03-0.32-0.25+0.39+0.26)%, B(Bs0→Ds*±Ds)= (2.75-0.71+0.83±0.69)%, and B(Bs0→Ds*+Ds*-)=(3.08-1.04- 0.86+1.22+0.85)%; the sum is B[Bs0→Ds(*)+Ds(*)-]=(6.85-1.30-1. 80+1.53+1.79)%. Assuming Bs0→Ds(*)+Ds(*)- saturates decays to CP-even final states, the branching fraction determines the ratio ΔΓs/cosφ, where ΔΓs is the difference in widths between the two Bs-B̄s mass eigenstates, and φ is a CP-violating weak phase. Taking CP violation to be negligibly small, we obtain ΔΓss=0. 147-0.030+0.036(stat)-0.041+0.042(syst), where Γs is the mean decay width.

Original languageEnglish
Article number201802
JournalPhysical Review Letters
Volume105
Issue number20
DOIs
Publication statusPublished - 2010 Nov 10

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collisions
decay
CP violation
eigenvectors

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  • Physics and Astronomy(all)

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Observation of Bs0→Ds(*)+Ds(*)- using e⊃+e⊃- collisions and a determination of the Bs-B̄s width difference ΔΓs . / Esen, S.; Schwartz, A. J.; Adachi, I.; Aihara, H.; Arinstein, K.; Aulchenko, V.; Aushev, T.; Aziz, T.; Bakich, A. M.; Balagura, V.; Barberio, E.; Bay, A.; Bischofberger, M.; Bondar, A.; Bozek, A.; Bračko, M.; Browder, T. E.; Chang, M. C.; Chang, P.; Chen, A.; Chen, P.; Cheon, B. G.; Chiang, C. C.; Choi, Y.; Dalseno, J.; Dash, M.; Doležl, Z.; Drásal, Z.; Drutskoy, A.; Eidelman, S.; Goldenzweig, P.; Golob, B.; Ha, H.; Haba, J.; Hara, T.; Hayasaka, K.; Higuchi, T.; Hoshi, Y.; Hou, W. S.; Hsiung, Y. B.; Hyun, H. J.; Iijima, T.; Inami, K.; Itoh, R.; Iwabuchi, M.; Joshi, N. J.; Julius, T.; Kang, J. H.; Kawasaki, T.; Kichimi, H.; Kim, H. J.; Kim, H. O.; Kim, J. H.; Kim, Y. J.; Kinoshita, K.; Ko, B. R.; Kodyš, P.; Korpar, S.; Križan, P.; Krokovny, P.; Kuhr, T.; Kumita, T.; Kwon, Y. J.; Kyeong, S. H.; Lange, J. S.; Lee, S. H.; Liu, Y.; Liventsev, D.; Louvot, R.; Matyja, A.; McOnie, S.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Nakano, E.; Nakao, M.; Nakazawa, H.; Natkaniec, Z.; Neubauer, S.; Nishida, S.; Nitoh, O.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Pakhlov, P.; Park, C. W.; Park, H.; Park, H. K.; Petrič, M.; Piilonen, L. E.; Röhrken, M.; Ryu, S.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schwanda, C.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shen, C. P.; Shiu, J. G.; Smerkol, P.; Solovieva, E.; Starič, M.; Sumisawa, K.; Sumiyoshi, T.; Teramoto, Y.; Trabelsi, K.; Uehara, S.; Unno, Y.; Uno, S.; Urquijo, P.; Usov, Y.; Varner, G.; Varvell, K. E.; Vervink, K.; Wang, C. H.; Wang, M. Z.; Wang, P.; Watanabe, Y.; Wedd, R.; Wicht, J.; Won, Eunil; Yabsley, B. D.; Yamashita, Y.; Zhang, Z. P.; Zhilich, V.; Zupanc, A.

In: Physical Review Letters, Vol. 105, No. 20, 201802, 10.11.2010.

Research output: Contribution to journalArticle

Esen, S, Schwartz, AJ, Adachi, I, Aihara, H, Arinstein, K, Aulchenko, V, Aushev, T, Aziz, T, Bakich, AM, Balagura, V, Barberio, E, Bay, A, Bischofberger, M, Bondar, A, Bozek, A, Bračko, M, Browder, TE, Chang, MC, Chang, P, Chen, A, Chen, P, Cheon, BG, Chiang, CC, Choi, Y, Dalseno, J, Dash, M, Doležl, Z, Drásal, Z, Drutskoy, A, Eidelman, S, Goldenzweig, P, Golob, B, Ha, H, Haba, J, Hara, T, Hayasaka, K, Higuchi, T, Hoshi, Y, Hou, WS, Hsiung, YB, Hyun, HJ, Iijima, T, Inami, K, Itoh, R, Iwabuchi, M, Joshi, NJ, Julius, T, Kang, JH, Kawasaki, T, Kichimi, H, Kim, HJ, Kim, HO, Kim, JH, Kim, YJ, Kinoshita, K, Ko, BR, Kodyš, P, Korpar, S, Križan, P, Krokovny, P, Kuhr, T, Kumita, T, Kwon, YJ, Kyeong, SH, Lange, JS, Lee, SH, Liu, Y, Liventsev, D, Louvot, R, Matyja, A, McOnie, S, Miyata, H, Mizuk, R, Mohanty, GB, Nakano, E, Nakao, M, Nakazawa, H, Natkaniec, Z, Neubauer, S, Nishida, S, Nitoh, O, Ohshima, T, Okuno, S, Olsen, SL, Pakhlov, P, Park, CW, Park, H, Park, HK, Petrič, M, Piilonen, LE, Röhrken, M, Ryu, S, Sahoo, H, Sakai, Y, Schneider, O, Schwanda, C, Senyo, K, Sevior, ME, Shapkin, M, Shen, CP, Shiu, JG, Smerkol, P, Solovieva, E, Starič, M, Sumisawa, K, Sumiyoshi, T, Teramoto, Y, Trabelsi, K, Uehara, S, Unno, Y, Uno, S, Urquijo, P, Usov, Y, Varner, G, Varvell, KE, Vervink, K, Wang, CH, Wang, MZ, Wang, P, Watanabe, Y, Wedd, R, Wicht, J, Won, E, Yabsley, BD, Yamashita, Y, Zhang, ZP, Zhilich, V & Zupanc, A 2010, 'Observation of Bs0→Ds(*)+Ds(*)- using e⊃+e⊃- collisions and a determination of the Bs-B̄s width difference ΔΓs ', Physical Review Letters, vol. 105, no. 20, 201802. https://doi.org/10.1103/PhysRevLett.105.201802
Esen, S. ; Schwartz, A. J. ; Adachi, I. ; Aihara, H. ; Arinstein, K. ; Aulchenko, V. ; Aushev, T. ; Aziz, T. ; Bakich, A. M. ; Balagura, V. ; Barberio, E. ; Bay, A. ; Bischofberger, M. ; Bondar, A. ; Bozek, A. ; Bračko, M. ; Browder, T. E. ; Chang, M. C. ; Chang, P. ; Chen, A. ; Chen, P. ; Cheon, B. G. ; Chiang, C. C. ; Choi, Y. ; Dalseno, J. ; Dash, M. ; Doležl, Z. ; Drásal, Z. ; Drutskoy, A. ; Eidelman, S. ; Goldenzweig, P. ; Golob, B. ; Ha, H. ; Haba, J. ; Hara, T. ; Hayasaka, K. ; Higuchi, T. ; Hoshi, Y. ; Hou, W. S. ; Hsiung, Y. B. ; Hyun, H. J. ; Iijima, T. ; Inami, K. ; Itoh, R. ; Iwabuchi, M. ; Joshi, N. J. ; Julius, T. ; Kang, J. H. ; Kawasaki, T. ; Kichimi, H. ; Kim, H. J. ; Kim, H. O. ; Kim, J. H. ; Kim, Y. J. ; Kinoshita, K. ; Ko, B. R. ; Kodyš, P. ; Korpar, S. ; Križan, P. ; Krokovny, P. ; Kuhr, T. ; Kumita, T. ; Kwon, Y. J. ; Kyeong, S. H. ; Lange, J. S. ; Lee, S. H. ; Liu, Y. ; Liventsev, D. ; Louvot, R. ; Matyja, A. ; McOnie, S. ; Miyata, H. ; Mizuk, R. ; Mohanty, G. B. ; Nakano, E. ; Nakao, M. ; Nakazawa, H. ; Natkaniec, Z. ; Neubauer, S. ; Nishida, S. ; Nitoh, O. ; Ohshima, T. ; Okuno, S. ; Olsen, S. L. ; Pakhlov, P. ; Park, C. W. ; Park, H. ; Park, H. K. ; Petrič, M. ; Piilonen, L. E. ; Röhrken, M. ; Ryu, S. ; Sahoo, H. ; Sakai, Y. ; Schneider, O. ; Schwanda, C. ; Senyo, K. ; Sevior, M. E. ; Shapkin, M. ; Shen, C. P. ; Shiu, J. G. ; Smerkol, P. ; Solovieva, E. ; Starič, M. ; Sumisawa, K. ; Sumiyoshi, T. ; Teramoto, Y. ; Trabelsi, K. ; Uehara, S. ; Unno, Y. ; Uno, S. ; Urquijo, P. ; Usov, Y. ; Varner, G. ; Varvell, K. E. ; Vervink, K. ; Wang, C. H. ; Wang, M. Z. ; Wang, P. ; Watanabe, Y. ; Wedd, R. ; Wicht, J. ; Won, Eunil ; Yabsley, B. D. ; Yamashita, Y. ; Zhang, Z. P. ; Zhilich, V. ; Zupanc, A. / Observation of Bs0→Ds(*)+Ds(*)- using e⊃+e⊃- collisions and a determination of the Bs-B̄s width difference ΔΓs In: Physical Review Letters. 2010 ; Vol. 105, No. 20.
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title = "Observation of Bs0→Ds(*)+Ds(*)- using e⊃+e⊃- collisions and a determination of the Bs-B̄s width difference ΔΓs",
abstract = "We have made the first observation of Bs0→Ds(*)+Ds(*)- decays using 23.6fb⊃-1 of data recorded by the Belle experiment running on the Υ(5S) resonance. The branching fractions are measured to be B(Bs0→Ds+Ds-)=(1.03-0.32-0.25+0.39+0.26){\%}, B(Bs0→Ds*±Ds)= (2.75-0.71+0.83±0.69){\%}, and B(Bs0→Ds*+Ds*-)=(3.08-1.04- 0.86+1.22+0.85){\%}; the sum is B[Bs0→Ds(*)+Ds(*)-]=(6.85-1.30-1. 80+1.53+1.79){\%}. Assuming Bs0→Ds(*)+Ds(*)- saturates decays to CP-even final states, the branching fraction determines the ratio ΔΓs/cosφ, where ΔΓs is the difference in widths between the two Bs-B̄s mass eigenstates, and φ is a CP-violating weak phase. Taking CP violation to be negligibly small, we obtain ΔΓs/Γs=0. 147-0.030+0.036(stat)-0.041+0.042(syst), where Γs is the mean decay width.",
author = "S. Esen and Schwartz, {A. J.} and I. Adachi and H. Aihara and K. Arinstein and V. Aulchenko and T. Aushev and T. Aziz and Bakich, {A. M.} and V. Balagura and E. Barberio and A. Bay and M. Bischofberger and A. Bondar and A. Bozek and M. Bračko and Browder, {T. E.} and Chang, {M. C.} and P. Chang and A. Chen and P. Chen and Cheon, {B. G.} and Chiang, {C. C.} and Y. Choi and J. Dalseno and M. Dash and Z. Doležl and Z. Dr{\'a}sal and A. Drutskoy and S. Eidelman and P. Goldenzweig and B. Golob and H. Ha and J. Haba and T. Hara and K. Hayasaka and T. Higuchi and Y. Hoshi and Hou, {W. S.} and Hsiung, {Y. B.} and Hyun, {H. J.} and T. Iijima and K. Inami and R. Itoh and M. Iwabuchi and Joshi, {N. J.} and T. Julius and Kang, {J. H.} and T. Kawasaki and H. Kichimi and Kim, {H. J.} and Kim, {H. O.} and Kim, {J. H.} and Kim, {Y. J.} and K. Kinoshita and Ko, {B. R.} and P. Kodyš and S. Korpar and P. Križan and P. Krokovny and T. Kuhr and T. Kumita and Kwon, {Y. J.} and Kyeong, {S. H.} and Lange, {J. S.} and Lee, {S. H.} and Y. Liu and D. Liventsev and R. Louvot and A. Matyja and S. McOnie and H. Miyata and R. Mizuk and Mohanty, {G. B.} and E. Nakano and M. Nakao and H. Nakazawa and Z. Natkaniec and S. Neubauer and S. Nishida and O. Nitoh and T. Ohshima and S. Okuno and Olsen, {S. L.} and P. Pakhlov and Park, {C. W.} and H. Park and Park, {H. K.} and M. Petrič and Piilonen, {L. E.} and M. R{\"o}hrken and S. Ryu and H. Sahoo and Y. Sakai and O. Schneider and C. Schwanda and K. Senyo and Sevior, {M. E.} and M. Shapkin and Shen, {C. P.} and Shiu, {J. G.} and P. Smerkol and E. Solovieva and M. Starič and K. Sumisawa and T. Sumiyoshi and Y. Teramoto and K. Trabelsi and S. Uehara and Y. Unno and S. Uno and P. Urquijo and Y. Usov and G. Varner and Varvell, {K. E.} and K. Vervink and Wang, {C. H.} and Wang, {M. Z.} and P. Wang and Y. Watanabe and R. Wedd and J. Wicht and Eunil Won and Yabsley, {B. D.} and Y. Yamashita and Zhang, {Z. P.} and V. Zhilich and A. Zupanc",
year = "2010",
month = "11",
day = "10",
doi = "10.1103/PhysRevLett.105.201802",
language = "English",
volume = "105",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "20",

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TY - JOUR

T1 - Observation of Bs0→Ds(*)+Ds(*)- using e⊃+e⊃- collisions and a determination of the Bs-B̄s width difference ΔΓs

AU - Esen, S.

AU - Schwartz, A. J.

AU - Adachi, I.

AU - Aihara, H.

AU - Arinstein, K.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Aziz, T.

AU - Bakich, A. M.

AU - Balagura, V.

AU - Barberio, E.

AU - Bay, A.

AU - Bischofberger, M.

AU - Bondar, A.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chang, M. C.

AU - Chang, P.

AU - Chen, A.

AU - Chen, P.

AU - Cheon, B. G.

AU - Chiang, C. C.

AU - Choi, Y.

AU - Dalseno, J.

AU - Dash, M.

AU - Doležl, Z.

AU - Drásal, Z.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Goldenzweig, P.

AU - Golob, B.

AU - Ha, H.

AU - Haba, J.

AU - Hara, T.

AU - Hayasaka, K.

AU - Higuchi, T.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hsiung, Y. B.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Inami, K.

AU - Itoh, R.

AU - Iwabuchi, M.

AU - Joshi, N. J.

AU - Julius, T.

AU - Kang, J. H.

AU - Kawasaki, T.

AU - Kichimi, H.

AU - Kim, H. J.

AU - Kim, H. O.

AU - Kim, J. H.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Ko, B. R.

AU - Kodyš, P.

AU - Korpar, S.

AU - Križan, P.

AU - Krokovny, P.

AU - Kuhr, T.

AU - Kumita, T.

AU - Kwon, Y. J.

AU - Kyeong, S. H.

AU - Lange, J. S.

AU - Lee, S. H.

AU - Liu, Y.

AU - Liventsev, D.

AU - Louvot, R.

AU - Matyja, A.

AU - McOnie, S.

AU - Miyata, H.

AU - Mizuk, R.

AU - Mohanty, G. B.

AU - Nakano, E.

AU - Nakao, M.

AU - Nakazawa, H.

AU - Natkaniec, Z.

AU - Neubauer, S.

AU - Nishida, S.

AU - Nitoh, O.

AU - Ohshima, T.

AU - Okuno, S.

AU - Olsen, S. L.

AU - Pakhlov, P.

AU - Park, C. W.

AU - Park, H.

AU - Park, H. K.

AU - Petrič, M.

AU - Piilonen, L. E.

AU - Röhrken, M.

AU - Ryu, S.

AU - Sahoo, H.

AU - Sakai, Y.

AU - Schneider, O.

AU - Schwanda, C.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shen, C. P.

AU - Shiu, J. G.

AU - Smerkol, P.

AU - Solovieva, E.

AU - Starič, M.

AU - Sumisawa, K.

AU - Sumiyoshi, T.

AU - Teramoto, Y.

AU - Trabelsi, K.

AU - Uehara, S.

AU - Unno, Y.

AU - Uno, S.

AU - Urquijo, P.

AU - Usov, Y.

AU - Varner, G.

AU - Varvell, K. E.

AU - Vervink, K.

AU - Wang, C. H.

AU - Wang, M. Z.

AU - Wang, P.

AU - Watanabe, Y.

AU - Wedd, R.

AU - Wicht, J.

AU - Won, Eunil

AU - Yabsley, B. D.

AU - Yamashita, Y.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zupanc, A.

PY - 2010/11/10

Y1 - 2010/11/10

N2 - We have made the first observation of Bs0→Ds(*)+Ds(*)- decays using 23.6fb⊃-1 of data recorded by the Belle experiment running on the Υ(5S) resonance. The branching fractions are measured to be B(Bs0→Ds+Ds-)=(1.03-0.32-0.25+0.39+0.26)%, B(Bs0→Ds*±Ds)= (2.75-0.71+0.83±0.69)%, and B(Bs0→Ds*+Ds*-)=(3.08-1.04- 0.86+1.22+0.85)%; the sum is B[Bs0→Ds(*)+Ds(*)-]=(6.85-1.30-1. 80+1.53+1.79)%. Assuming Bs0→Ds(*)+Ds(*)- saturates decays to CP-even final states, the branching fraction determines the ratio ΔΓs/cosφ, where ΔΓs is the difference in widths between the two Bs-B̄s mass eigenstates, and φ is a CP-violating weak phase. Taking CP violation to be negligibly small, we obtain ΔΓs/Γs=0. 147-0.030+0.036(stat)-0.041+0.042(syst), where Γs is the mean decay width.

AB - We have made the first observation of Bs0→Ds(*)+Ds(*)- decays using 23.6fb⊃-1 of data recorded by the Belle experiment running on the Υ(5S) resonance. The branching fractions are measured to be B(Bs0→Ds+Ds-)=(1.03-0.32-0.25+0.39+0.26)%, B(Bs0→Ds*±Ds)= (2.75-0.71+0.83±0.69)%, and B(Bs0→Ds*+Ds*-)=(3.08-1.04- 0.86+1.22+0.85)%; the sum is B[Bs0→Ds(*)+Ds(*)-]=(6.85-1.30-1. 80+1.53+1.79)%. Assuming Bs0→Ds(*)+Ds(*)- saturates decays to CP-even final states, the branching fraction determines the ratio ΔΓs/cosφ, where ΔΓs is the difference in widths between the two Bs-B̄s mass eigenstates, and φ is a CP-violating weak phase. Taking CP violation to be negligibly small, we obtain ΔΓs/Γs=0. 147-0.030+0.036(stat)-0.041+0.042(syst), where Γs is the mean decay width.

UR - http://www.scopus.com/inward/record.url?scp=78149458814&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78149458814&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.105.201802

DO - 10.1103/PhysRevLett.105.201802

M3 - Article

AN - SCOPUS:78149458814

VL - 105

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 20

M1 - 201802

ER -