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Title: Production of deuterons, tritons, He 3 nuclei, and their antinuclei in p p collisions at s = 0.9 , 2.76, and 7 TeV

Journal Article · · Physical Review C
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Invariant differential yields of deuterons and antideuterons in pp collisions at $$\sqrt{s}$$ = 0.9, 2.76 and 7 TeV and the yields of tritons, 3He nuclei, and their antinuclei at $$\sqrt{s}$$ = 7 TeV have been measured with the ALICE detector at the CERN Large Hadron Collider. The measurements cover a wide transverse momentum (pT) range in the rapidity interval |y| < 0.5, extending both the energy and the pT reach of previous measurements up to 3 GeV/c for A = 2 and 6 GeV/c for A = 3. The coalescence parameters of (anti)deuterons and H$$ \overline{e}$$3 nuclei exhibit an increasing trend with pT and are found to be compatible with measurements in pA collisions at low pT and lower energies. The integrated yields decrease by a factor of about 1000 for each increase of the mass number with one (anti)nucleon. Also, the deuteron-to-proton ratio is reported as a function of the average charged particle multiplicity at different center-of-mass energies.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Organization:
ALICE Collaboration
Grant/Contract Number:
AC02-05CH11231; AC05-00OR22725
OSTI ID:
1422006
Alternate ID(s):
OSTI ID: 1434022; OSTI ID: 1481668
Journal Information:
Physical Review C, Vol. 97, Issue 2; Related Information: © 2018 CERN for the ALICE Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 72 works
Citation information provided by
Web of Science

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