Deuteron and Antideuteron Production in Au + Au Collisions at √sNN = 200 GeV
Physical Review Letters Volume 94 Issue 12
Page 122302-1-122302-6
published_at 2005-04-01
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| File | |
| Title ( eng ) |
Deuteron and Antideuteron Production in Au + Au Collisions at √sNN = 200 GeV
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| Creator |
PHENIX Collaboration
Enokizono Akitomo
Hachiya Takashi
Kohama Takeshi
Nakamura Tomoaki
|
| Source Title |
Physical Review Letters
|
| Volume | 94 |
| Issue | 12 |
| Start Page | 122302-1 |
| End Page | 122302-6 |
| Abstract |
The production of deuterons and antideuterons in the transverse momentum range 1.1 < pT < 4.3 GeV/c at midrapidity in Au + Au collisions at √SNN = 200 GeV has been studied by the PHENIX experiment at RHIC. A coalescence analysis, comparing the deuteron and antideuteron spectra with that of proton and antiproton, has been performed. The coalescence probability is equal for both deuterons and antideuterons and it increases as a function of PT, which is consistent with an expanding collision zone. Comparing (anti)proton yields, p̅/p = 0.73 ± 0.01, with (anti)deuteron yields, d̅/d = 0.47 ± 0.03, we estimate that n̅/n = 0.64 ± 0.04. The nucleon phase space density is estimated from the coalescence measurement.
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| Keywords |
heavy ion-nucleus reactions
deuterons
|
| Language |
eng
|
| Resource Type | journal article |
| Publisher |
American Physical Society
|
| Date of Issued | 2005-04-01 |
| Rights |
Copyright (c) 2005 The American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0031-9007
[DOI] 10.1103/PhysRevLett.94.122302
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.94.122302
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