Szczegóły publikacji
Opis bibliograficzny
Multiplicity dependence of light (anti-)nuclei production in $p–Pb$ collisions at $\sqrt{s_{NN}}=5.02$ TeV / S. Acharya, [et al.], P. J. Konopka, [et al.] // Physics Letters. B ; ISSN 0370-2693. — 2020 — vol. 800 art. no. 135043, s. 1–13. — Bibliogr. s. 7–8, Abstr. — Publikacja dostępna online od: 2019-10-23. — P. Konopka – afiliacja: European Organization for Nuclear Research(CERN), Geneva, Switzerland
Autorzy (1027)
- Acharya Shreyasi
- Konopka Piotr
Dane bibliometryczne
| ID BaDAP | 133046 |
|---|---|
| Data dodania do BaDAP | 2021-03-15 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.physletb.2019.135043 |
| Rok publikacji | 2020 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physics Letters, B |
Abstract
The measurement of the deuteron and anti-deuteron production in the rapidity range -1 < y < 0 as a function of transverse momentum and event multiplicity in p-Pb collisions at root s(NN) = 5.02 TeV is presented. (Anti-)deuterons are identified via their specific energy loss dE/dx and via their time-of-flight. Their production in p-Pb collisions is compared to pp and Pb-Pb collisions and is discussed within the context of thermal and coalescence models. The ratio of integrated yields of deuterons to protons (d/p) shows a significant increase as a function of the charged-particle multiplicity of the event starting from values similar to those observed in pp collisions at low multiplicities and approaching those observed in Pb-Pb collisions at high multiplicities. The mean transverse particle momenta are extracted from the deuteron spectra and the values are similar to those obtained for p and Lambda particles. Thus, deuteron spectra do not follow mass ordering. This behaviour is in contrast to the trend observed for non-composite particles in p-Pb collisions. In addition, the production of the rare He-3 and (3)(He) over bar nuclei has been studied. The spectrum corresponding to all non-single diffractive p-Pb collisions is obtained in the rapidity window -1 < y < 0 and the p(T)-integrated yield dN/dy is extracted. It is found that the yields of protons, deuterons, and He-3, normalised by the spin degeneracy factor, follow an exponential decrease with mass number.