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Title: Suppression of light nuclei production in collisions of small systems at the Large Hadron Collider

Abstract

We show that the recently observed suppression of the yield ratio of deuteron to proton and of helium-3 to proton in p+p collisions compared to those in p+Pb or Pb+Pb collisions by the ALICE Collaboration at the Large Hadron Collider (LHC) can be explained if light nuclei are produced from the coalescence of nucleons at the kinetic freeze-out of these collisions. This suppression is attributed to the non-negligible sizes of deuteron and helium-3 compared to the size of the nucleon emission source in collisions of small systems, which reduces the overlap of their internal wave functions with those of nucleons. The same model is also used to study the production of triton and hypertriton in heavy-ion collisions at the LHC. Compared to helium-3 in events of low charged particle multiplicity, the triton is less suppressed due to its smaller size and the hypertriton is even more suppressed as a result of its much larger size.

Authors:
; ;
Publication Date:
Research Org.:
Texas A & M Univ., College Station, TX (United States)
Sponsoring Org.:
USDOE Office of Science (SC); Welch Foundation; German Federal Ministry of Education and Research (BMBF)
OSTI Identifier:
1547615
Alternate Identifier(s):
OSTI ID: 1612268
Grant/Contract Number:  
SC0015266; A-1358
Resource Type:
Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 792 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Astronomy & Astrophysics; Physics

Citation Formats

Sun, Kai-Jia, Ko, Che Ming, and Dönigus, Benjamin. Suppression of light nuclei production in collisions of small systems at the Large Hadron Collider. Netherlands: N. p., 2019. Web. https://doi.org/10.1016/j.physletb.2019.03.033.
Sun, Kai-Jia, Ko, Che Ming, & Dönigus, Benjamin. Suppression of light nuclei production in collisions of small systems at the Large Hadron Collider. Netherlands. https://doi.org/10.1016/j.physletb.2019.03.033
Sun, Kai-Jia, Ko, Che Ming, and Dönigus, Benjamin. Wed . "Suppression of light nuclei production in collisions of small systems at the Large Hadron Collider". Netherlands. https://doi.org/10.1016/j.physletb.2019.03.033.
@article{osti_1547615,
title = {Suppression of light nuclei production in collisions of small systems at the Large Hadron Collider},
author = {Sun, Kai-Jia and Ko, Che Ming and Dönigus, Benjamin},
abstractNote = {We show that the recently observed suppression of the yield ratio of deuteron to proton and of helium-3 to proton in p+p collisions compared to those in p+Pb or Pb+Pb collisions by the ALICE Collaboration at the Large Hadron Collider (LHC) can be explained if light nuclei are produced from the coalescence of nucleons at the kinetic freeze-out of these collisions. This suppression is attributed to the non-negligible sizes of deuteron and helium-3 compared to the size of the nucleon emission source in collisions of small systems, which reduces the overlap of their internal wave functions with those of nucleons. The same model is also used to study the production of triton and hypertriton in heavy-ion collisions at the LHC. Compared to helium-3 in events of low charged particle multiplicity, the triton is less suppressed due to its smaller size and the hypertriton is even more suppressed as a result of its much larger size.},
doi = {10.1016/j.physletb.2019.03.033},
journal = {Physics Letters B},
number = C,
volume = 792,
place = {Netherlands},
year = {2019},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1016/j.physletb.2019.03.033

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Cited by: 6 works
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    Works referencing / citing this record:

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