Invariant differential yields of deuterons and antideuterons in pp collisions at √s = 0.9, 2.76 and 7 TeV and the yields of tritons, 3He 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 3¯¯¯¯He 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.

Production of deuterons, tritons, 3 He nuclei, and their antinuclei in pp collisions at √s = 0.9, 2.76, and 7 TeV / The ALICE collaboration, ., Acharya, S., Acosta, F.T.-., Adamová, D., Adolfsson, J., Aggarwal, M.M., Aglieri Rinella, G., Agnello, M., Agrawal, N., Ahammed, Z., Ahn, S.U., Aiola, S., Akindinov, A., Al-Turany, M., Alam, S.N., Albuquerque, D.S.D., Aleksandrov, D., Alessandro, B., Alfaro Molina, R., Ali, Y., et al.. - In: PHYSICAL REVIEW C. - ISSN 2469-9985. - 97:2(2018). [10.1103/PhysRevC.97.024615]

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

L. Cunqueiro
Membro del Collaboration Group
;
2018

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, 3He 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 3¯¯¯¯He 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.
2018
heavy ion experiments, particle and resonance production, nuclear reactions
01 Pubblicazione su rivista::01a Articolo in rivista
Production of deuterons, tritons, 3 He nuclei, and their antinuclei in pp collisions at √s = 0.9, 2.76, and 7 TeV / The ALICE collaboration, ., Acharya, S., Acosta, F.T.-., Adamová, D., Adolfsson, J., Aggarwal, M.M., Aglieri Rinella, G., Agnello, M., Agrawal, N., Ahammed, Z., Ahn, S.U., Aiola, S., Akindinov, A., Al-Turany, M., Alam, S.N., Albuquerque, D.S.D., Aleksandrov, D., Alessandro, B., Alfaro Molina, R., Ali, Y., et al.. - In: PHYSICAL REVIEW C. - ISSN 2469-9985. - 97:2(2018). [10.1103/PhysRevC.97.024615]
File allegati a questo prodotto
File Dimensione Formato  
Acharya_Production of deuterons_2018.pdf

accesso aperto

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Creative commons
Dimensione 1 MB
Formato Adobe PDF
1 MB Adobe PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1656902
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 130
  • ???jsp.display-item.citation.isi??? 99
social impact