Abstract
Inclusive double differential multiplicities of deuterons, [Formula Presented] and [Formula Presented] measured by E877 for [Formula Presented] Au+Au collisions at the Brookhaven’s Alternating Gradient Synchrotron (AGS) are presented. Light fragments at beam rapidity are measured for the first time at AGS energies. Beam rapidity deuteron and [Formula Presented] yields and transverse slope parameters are found to be strongly dependent on the impact parameter, and the shape of the deuteron spectra is not consistent with that expected for a simple thermal distribution. The deuteron yields relative to proton yields are analyzed in terms of a simple coalescence model. While results indicate an increase in source size compared to collisions of lighter systems at the same energy, they are inconsistent with a simple coalescence model reflected by a rapidity dependence of the coalescence parameter [Formula Presented] A new approach utilizing an expanding thermalized source combined with a coalescence code is developed for studying deuteron formation in heavy-ion collisions. The strong dependence of deuteron yields on collective motion implies that deuteron yields relative to those of protons can be used for constraining source parameters.
| Original language | English |
|---|---|
| Number of pages | 1 |
| Journal | Physical Review C - Nuclear Physics |
| Volume | 61 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2000 Jan 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
Cite this
Light fragment yields from central Au+Au collisions at [Formula Presented]. / Barrette, J.; Bellwied, R.; Bennett, S.; Bersch, R.; Braun-Munzinger, P.; Chang, W. C.; Cleland, W. E.; Clemen, M.; Cole, J. D.; Cormier, T. M.; Dai, Y.; David, G.; Dee, J.; Dietzsch, O.; Drigert, M. W.; Filimonov, K.; Hall, J. R.; Hemmick, T. K.; Herrmann, N.; Hong, Byungsik; Jiang, C. L.; Johnson, S. C.; Kwon, Y.; Lacasse, R.; Li, Q.; Ludlam, T. W.; McCorkle, S.; Mark, S. K.; Matheus, R.; Miśkowiec, D.; O’Brien, E.; Panitkin, S.; Piazza, T.; Pollack, M.; Pruneau, C.; Qi, Y. J.; Rao, M. N.; Reber, E. L.; Rosati, M.; daSilva, N. C.; Sedykh, S.; Sheen, J.; Sonnadara, U.; Stachel, J.; Takai, H.; Takagui, E. M.; Voloshin, S.; Vongpaseuth, T.; Wessels, J. P.; Woody, C. L.; Xu, N.; Zhang, Y.; Zhang, Z.; Zou, C.
In: Physical Review C - Nuclear Physics, Vol. 61, No. 4, 01.01.2000.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Light fragment yields from central Au+Au collisions at [Formula Presented]
AU - Barrette, J.
AU - Bellwied, R.
AU - Bennett, S.
AU - Bersch, R.
AU - Braun-Munzinger, P.
AU - Chang, W. C.
AU - Cleland, W. E.
AU - Clemen, M.
AU - Cole, J. D.
AU - Cormier, T. M.
AU - Dai, Y.
AU - David, G.
AU - Dee, J.
AU - Dietzsch, O.
AU - Drigert, M. W.
AU - Filimonov, K.
AU - Hall, J. R.
AU - Hemmick, T. K.
AU - Herrmann, N.
AU - Hong, Byungsik
AU - Jiang, C. L.
AU - Johnson, S. C.
AU - Kwon, Y.
AU - Lacasse, R.
AU - Li, Q.
AU - Ludlam, T. W.
AU - McCorkle, S.
AU - Mark, S. K.
AU - Matheus, R.
AU - Miśkowiec, D.
AU - O’Brien, E.
AU - Panitkin, S.
AU - Piazza, T.
AU - Pollack, M.
AU - Pruneau, C.
AU - Qi, Y. J.
AU - Rao, M. N.
AU - Reber, E. L.
AU - Rosati, M.
AU - daSilva, N. C.
AU - Sedykh, S.
AU - Sheen, J.
AU - Sonnadara, U.
AU - Stachel, J.
AU - Takai, H.
AU - Takagui, E. M.
AU - Voloshin, S.
AU - Vongpaseuth, T.
AU - Wessels, J. P.
AU - Woody, C. L.
AU - Xu, N.
AU - Zhang, Y.
AU - Zhang, Z.
AU - Zou, C.
PY - 2000/1/1
Y1 - 2000/1/1
N2 - Inclusive double differential multiplicities of deuterons, [Formula Presented] and [Formula Presented] measured by E877 for [Formula Presented] Au+Au collisions at the Brookhaven’s Alternating Gradient Synchrotron (AGS) are presented. Light fragments at beam rapidity are measured for the first time at AGS energies. Beam rapidity deuteron and [Formula Presented] yields and transverse slope parameters are found to be strongly dependent on the impact parameter, and the shape of the deuteron spectra is not consistent with that expected for a simple thermal distribution. The deuteron yields relative to proton yields are analyzed in terms of a simple coalescence model. While results indicate an increase in source size compared to collisions of lighter systems at the same energy, they are inconsistent with a simple coalescence model reflected by a rapidity dependence of the coalescence parameter [Formula Presented] A new approach utilizing an expanding thermalized source combined with a coalescence code is developed for studying deuteron formation in heavy-ion collisions. The strong dependence of deuteron yields on collective motion implies that deuteron yields relative to those of protons can be used for constraining source parameters.
AB - Inclusive double differential multiplicities of deuterons, [Formula Presented] and [Formula Presented] measured by E877 for [Formula Presented] Au+Au collisions at the Brookhaven’s Alternating Gradient Synchrotron (AGS) are presented. Light fragments at beam rapidity are measured for the first time at AGS energies. Beam rapidity deuteron and [Formula Presented] yields and transverse slope parameters are found to be strongly dependent on the impact parameter, and the shape of the deuteron spectra is not consistent with that expected for a simple thermal distribution. The deuteron yields relative to proton yields are analyzed in terms of a simple coalescence model. While results indicate an increase in source size compared to collisions of lighter systems at the same energy, they are inconsistent with a simple coalescence model reflected by a rapidity dependence of the coalescence parameter [Formula Presented] A new approach utilizing an expanding thermalized source combined with a coalescence code is developed for studying deuteron formation in heavy-ion collisions. The strong dependence of deuteron yields on collective motion implies that deuteron yields relative to those of protons can be used for constraining source parameters.
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U2 - 10.1103/PhysRevC.61.044906
DO - 10.1103/PhysRevC.61.044906
M3 - Article
AN - SCOPUS:85035259452
VL - 61
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
SN - 0556-2813
IS - 4
ER -