Production of deuterons, tritons, <SUP>3</SUP>He nuclei, and their antinuclei in <i>pp</i> collisions at √<i>s</i>=0.9, 2.76, and 7 TeV



Acharya, S, Adam, J, Adamova, D, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, N
et al (show 1016 more authors) (2018) Production of deuterons, tritons, <SUP>3</SUP>He nuclei, and their antinuclei in <i>pp</i> collisions at √<i>s</i>=0.9, 2.76, and 7 TeV. PHYSICAL REVIEW C, 97 (2). 024615-.

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Abstract

Invariant differential yields of deuterons and antideuterons in pp collisions at s = 0.9, 2.76 and 7 TeV and the yields of tritons, He3 nuclei, and their antinuclei at 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 Hē3 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. Furthermore, the deuteron-to-proton ratio is reported as a function of the average charged particle multiplicity at different center-of-mass energies.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 5110 Synchrotrons and Accelerators, 51 Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 25 Feb 2019 15:44
Last Modified: 20 Jun 2024 19:03
DOI: 10.1103/PhysRevC.97.024615
Open Access URL: https://doi.org/10.1103/PhysRevC.97.024615
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3033401