Production of deuterons, tritons, 3 He nuclei, and their antinuclei in pp collisions at √s = 0.9, 2.76, and 7 TeV.
Abstract
Invariant differential yields of deuterons and antideuterons in p p collisions at √ s = 0.9, 2.76 and 7 TeV and the yields of tritons, 3 He 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 ( p T ) range in the rapidity interval | y | < 0.5 , extending both the energy and the p T 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 3 ¯¯¯¯ He nuclei exhibit an increasing trend with p T and are found to be compatible with measurements in p A collisions at low p T 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.Citation
ALICE Collaboration (2018) 'Production of deuterons, tritons, 3 He nuclei, and their antinuclei in pp collisions at √s = 0.9, 2.76, and 7 TeV.', Physical Review C, DOI: 10.1103/PhysRevC.97.024615Publisher
APS PhysicsJournal
Physical Review CDOI
10.1103/PhysRevC.97.024615Additional Links
https://journals.aps.org/prc/abstract/10.1103/PhysRevC.97.024615Type
ArticleLanguage
enISSN
24699985EISSN
24699993ae974a485f413a2113503eed53cd6c53
10.1103/PhysRevC.97.024615