Sub-threshold φ-meson yield in central 58NI + 58Ni collisions

A. Mangiarotti, N. Herrmann, P. R. Maurenzig, A. Gobbi, R. Kotte, J. Kecskemeti, Y. Leifels, J. P. Alard, A. Andronic, R. Averbeck, V. Barret, Z. Basrak, N. Bastid, I. Belyaev, A. Bendarag, G. Berek, R. Čaplar, P. Crochet, A. Devismes, P. DupieuxM. Dželalija, Ch Finck, Z. Fodor, Y. Grishkin, O. Hartmann, K. D. Hildenbrand, Byungsik Hong, Y. J. Kim, M. Kirejczyk, P. Koczoń, M. Korolija, T. Kress, R. Kutsche, A. Lebedev, V. Manko, M. Merschmeyer, D. Moisa, A. Nianine, W. Neubert, D. Pelte, M. Petrovici, C. Plettner, F. Rami, W. Reisdorf, B. de Schauenburg, D. Schüll, Z. Seres, B. Sikora, K. S. Sim, V. Simion, K. Siwek-Wilczyńska, V. Smolyankin, M. Stockmeier, G. Stoicea, M. Vasiliev, P. Wagner, K. Wiśniewski, D. Wohlfarth, I. Yushmanov, A. Zhilin

Research output: Contribution to journalArticle

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Abstract

The φ-meson production cross section is measured for the first time at a sub-threshold energy of 1.93 AGeV in 58Ni + 58Ni central collisions. The φ data were obtained within the acceptance of the CDC/Barrel subsystem of FOPI. For a sample of 4.7 × 106 central events, after background subtraction, 23 candidates were observed. Extensive GEANT simulations of the detector performance are shown in a thorough comparison to the real response, aiming at a good understanding of the apparatus and at a trustable determination of the efficiencies, production probability and possible systematic errors. A filter procedure is elaborated, which is meant to facilitate the comparison of any theoretical calculation or new data with the current ones. How to extrapolate the present value to a φ-meson cross section in 4π is also discussed. This result on pseudo-vector mesons can now be compared to existing experimental knowledge for the same reaction at the same incident energy for various outgoing channels, K+ and K- included. A significant fraction (at least 20%) of the K- -mesons is originating in the decay of the φ, supporting the statement that the two channels are strongly correlated.

Original languageEnglish
Pages (from-to)89-123
Number of pages35
JournalNuclear Physics A
Volume714
Issue number1-2
DOIs
Publication statusPublished - 2003 Feb 10

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mesons
collisions
thresholds
cross sections
vector mesons
subtraction
systematic errors
acceptability
filters
energy
detectors
decay
simulation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Mangiarotti, A., Herrmann, N., Maurenzig, P. R., Gobbi, A., Kotte, R., Kecskemeti, J., ... Zhilin, A. (2003). Sub-threshold φ-meson yield in central 58NI + 58Ni collisions. Nuclear Physics A, 714(1-2), 89-123. https://doi.org/10.1016/S0375-9474(02)01366-0

Sub-threshold φ-meson yield in central 58NI + 58Ni collisions. / Mangiarotti, A.; Herrmann, N.; Maurenzig, P. R.; Gobbi, A.; Kotte, R.; Kecskemeti, J.; Leifels, Y.; Alard, J. P.; Andronic, A.; Averbeck, R.; Barret, V.; Basrak, Z.; Bastid, N.; Belyaev, I.; Bendarag, A.; Berek, G.; Čaplar, R.; Crochet, P.; Devismes, A.; Dupieux, P.; Dželalija, M.; Finck, Ch; Fodor, Z.; Grishkin, Y.; Hartmann, O.; Hildenbrand, K. D.; Hong, Byungsik; Kim, Y. J.; Kirejczyk, M.; Koczoń, P.; Korolija, M.; Kress, T.; Kutsche, R.; Lebedev, A.; Manko, V.; Merschmeyer, M.; Moisa, D.; Nianine, A.; Neubert, W.; Pelte, D.; Petrovici, M.; Plettner, C.; Rami, F.; Reisdorf, W.; de Schauenburg, B.; Schüll, D.; Seres, Z.; Sikora, B.; Sim, K. S.; Simion, V.; Siwek-Wilczyńska, K.; Smolyankin, V.; Stockmeier, M.; Stoicea, G.; Vasiliev, M.; Wagner, P.; Wiśniewski, K.; Wohlfarth, D.; Yushmanov, I.; Zhilin, A.

In: Nuclear Physics A, Vol. 714, No. 1-2, 10.02.2003, p. 89-123.

Research output: Contribution to journalArticle

Mangiarotti, A, Herrmann, N, Maurenzig, PR, Gobbi, A, Kotte, R, Kecskemeti, J, Leifels, Y, Alard, JP, Andronic, A, Averbeck, R, Barret, V, Basrak, Z, Bastid, N, Belyaev, I, Bendarag, A, Berek, G, Čaplar, R, Crochet, P, Devismes, A, Dupieux, P, Dželalija, M, Finck, C, Fodor, Z, Grishkin, Y, Hartmann, O, Hildenbrand, KD, Hong, B, Kim, YJ, Kirejczyk, M, Koczoń, P, Korolija, M, Kress, T, Kutsche, R, Lebedev, A, Manko, V, Merschmeyer, M, Moisa, D, Nianine, A, Neubert, W, Pelte, D, Petrovici, M, Plettner, C, Rami, F, Reisdorf, W, de Schauenburg, B, Schüll, D, Seres, Z, Sikora, B, Sim, KS, Simion, V, Siwek-Wilczyńska, K, Smolyankin, V, Stockmeier, M, Stoicea, G, Vasiliev, M, Wagner, P, Wiśniewski, K, Wohlfarth, D, Yushmanov, I & Zhilin, A 2003, 'Sub-threshold φ-meson yield in central 58NI + 58Ni collisions', Nuclear Physics A, vol. 714, no. 1-2, pp. 89-123. https://doi.org/10.1016/S0375-9474(02)01366-0
Mangiarotti A, Herrmann N, Maurenzig PR, Gobbi A, Kotte R, Kecskemeti J et al. Sub-threshold φ-meson yield in central 58NI + 58Ni collisions. Nuclear Physics A. 2003 Feb 10;714(1-2):89-123. https://doi.org/10.1016/S0375-9474(02)01366-0
Mangiarotti, A. ; Herrmann, N. ; Maurenzig, P. R. ; Gobbi, A. ; Kotte, R. ; Kecskemeti, J. ; Leifels, Y. ; Alard, J. P. ; Andronic, A. ; Averbeck, R. ; Barret, V. ; Basrak, Z. ; Bastid, N. ; Belyaev, I. ; Bendarag, A. ; Berek, G. ; Čaplar, R. ; Crochet, P. ; Devismes, A. ; Dupieux, P. ; Dželalija, M. ; Finck, Ch ; Fodor, Z. ; Grishkin, Y. ; Hartmann, O. ; Hildenbrand, K. D. ; Hong, Byungsik ; Kim, Y. J. ; Kirejczyk, M. ; Koczoń, P. ; Korolija, M. ; Kress, T. ; Kutsche, R. ; Lebedev, A. ; Manko, V. ; Merschmeyer, M. ; Moisa, D. ; Nianine, A. ; Neubert, W. ; Pelte, D. ; Petrovici, M. ; Plettner, C. ; Rami, F. ; Reisdorf, W. ; de Schauenburg, B. ; Schüll, D. ; Seres, Z. ; Sikora, B. ; Sim, K. S. ; Simion, V. ; Siwek-Wilczyńska, K. ; Smolyankin, V. ; Stockmeier, M. ; Stoicea, G. ; Vasiliev, M. ; Wagner, P. ; Wiśniewski, K. ; Wohlfarth, D. ; Yushmanov, I. ; Zhilin, A. / Sub-threshold φ-meson yield in central 58NI + 58Ni collisions. In: Nuclear Physics A. 2003 ; Vol. 714, No. 1-2. pp. 89-123.
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abstract = "The φ-meson production cross section is measured for the first time at a sub-threshold energy of 1.93 AGeV in 58Ni + 58Ni central collisions. The φ data were obtained within the acceptance of the CDC/Barrel subsystem of FOPI. For a sample of 4.7 × 106 central events, after background subtraction, 23 candidates were observed. Extensive GEANT simulations of the detector performance are shown in a thorough comparison to the real response, aiming at a good understanding of the apparatus and at a trustable determination of the efficiencies, production probability and possible systematic errors. A filter procedure is elaborated, which is meant to facilitate the comparison of any theoretical calculation or new data with the current ones. How to extrapolate the present value to a φ-meson cross section in 4π is also discussed. This result on pseudo-vector mesons can now be compared to existing experimental knowledge for the same reaction at the same incident energy for various outgoing channels, K+ and K- included. A significant fraction (at least 20{\%}) of the K- -mesons is originating in the decay of the φ, supporting the statement that the two channels are strongly correlated.",
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T1 - Sub-threshold φ-meson yield in central 58NI + 58Ni collisions

AU - Mangiarotti, A.

AU - Herrmann, N.

AU - Maurenzig, P. R.

AU - Gobbi, A.

AU - Kotte, R.

AU - Kecskemeti, J.

AU - Leifels, Y.

AU - Alard, J. P.

AU - Andronic, A.

AU - Averbeck, R.

AU - Barret, V.

AU - Basrak, Z.

AU - Bastid, N.

AU - Belyaev, I.

AU - Bendarag, A.

AU - Berek, G.

AU - Čaplar, R.

AU - Crochet, P.

AU - Devismes, A.

AU - Dupieux, P.

AU - Dželalija, M.

AU - Finck, Ch

AU - Fodor, Z.

AU - Grishkin, Y.

AU - Hartmann, O.

AU - Hildenbrand, K. D.

AU - Hong, Byungsik

AU - Kim, Y. J.

AU - Kirejczyk, M.

AU - Koczoń, P.

AU - Korolija, M.

AU - Kress, T.

AU - Kutsche, R.

AU - Lebedev, A.

AU - Manko, V.

AU - Merschmeyer, M.

AU - Moisa, D.

AU - Nianine, A.

AU - Neubert, W.

AU - Pelte, D.

AU - Petrovici, M.

AU - Plettner, C.

AU - Rami, F.

AU - Reisdorf, W.

AU - de Schauenburg, B.

AU - Schüll, D.

AU - Seres, Z.

AU - Sikora, B.

AU - Sim, K. S.

AU - Simion, V.

AU - Siwek-Wilczyńska, K.

AU - Smolyankin, V.

AU - Stockmeier, M.

AU - Stoicea, G.

AU - Vasiliev, M.

AU - Wagner, P.

AU - Wiśniewski, K.

AU - Wohlfarth, D.

AU - Yushmanov, I.

AU - Zhilin, A.

PY - 2003/2/10

Y1 - 2003/2/10

N2 - The φ-meson production cross section is measured for the first time at a sub-threshold energy of 1.93 AGeV in 58Ni + 58Ni central collisions. The φ data were obtained within the acceptance of the CDC/Barrel subsystem of FOPI. For a sample of 4.7 × 106 central events, after background subtraction, 23 candidates were observed. Extensive GEANT simulations of the detector performance are shown in a thorough comparison to the real response, aiming at a good understanding of the apparatus and at a trustable determination of the efficiencies, production probability and possible systematic errors. A filter procedure is elaborated, which is meant to facilitate the comparison of any theoretical calculation or new data with the current ones. How to extrapolate the present value to a φ-meson cross section in 4π is also discussed. This result on pseudo-vector mesons can now be compared to existing experimental knowledge for the same reaction at the same incident energy for various outgoing channels, K+ and K- included. A significant fraction (at least 20%) of the K- -mesons is originating in the decay of the φ, supporting the statement that the two channels are strongly correlated.

AB - The φ-meson production cross section is measured for the first time at a sub-threshold energy of 1.93 AGeV in 58Ni + 58Ni central collisions. The φ data were obtained within the acceptance of the CDC/Barrel subsystem of FOPI. For a sample of 4.7 × 106 central events, after background subtraction, 23 candidates were observed. Extensive GEANT simulations of the detector performance are shown in a thorough comparison to the real response, aiming at a good understanding of the apparatus and at a trustable determination of the efficiencies, production probability and possible systematic errors. A filter procedure is elaborated, which is meant to facilitate the comparison of any theoretical calculation or new data with the current ones. How to extrapolate the present value to a φ-meson cross section in 4π is also discussed. This result on pseudo-vector mesons can now be compared to existing experimental knowledge for the same reaction at the same incident energy for various outgoing channels, K+ and K- included. A significant fraction (at least 20%) of the K- -mesons is originating in the decay of the φ, supporting the statement that the two channels are strongly correlated.

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