The transverse polarization of Λ and (Formula Presented) hyperons is measured in pPb collisions collected by the LHCb experiment at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The polarization is averaged over hyperon transverse momentum in the range 0.15 < pT < 6.00 GeV=c, and Feynman-x in the ranges 0.005 < xF < 0.040 (forward region) and −0.10 < xF < −0.01 (backward region) defined relative to the proton beam direction. The transverse polarization is found to be compatible with zero for both Λ and Λ̄ hyperons. The results are also measured as a function of pT and xF with no significant dependence on these variables observed. The results are compared with previous experimental measurements at different center-of-mass energies and collision environments.

Measurement of transverse Λ and (Λ)over-bar hyperon polarization in p Pb collisions at √SNN = 15.02 TeV / R. Aaij, A. . .A.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 112:11(2025 Dec 24), pp. 112022.1-112022.15. [10.1103/rc6r-zt9q]

Measurement of transverse Λ and (Λ)over-bar hyperon polarization in p Pb collisions at √SNN = 15.02 TeV

S. Cesare;C. Mancuso;D. Marangotto;A. Merli;N. Neri;G. Tonani;T. Tork;Z. Wang;
2025

Abstract

The transverse polarization of Λ and (Formula Presented) hyperons is measured in pPb collisions collected by the LHCb experiment at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The polarization is averaged over hyperon transverse momentum in the range 0.15 < pT < 6.00 GeV=c, and Feynman-x in the ranges 0.005 < xF < 0.040 (forward region) and −0.10 < xF < −0.01 (backward region) defined relative to the proton beam direction. The transverse polarization is found to be compatible with zero for both Λ and Λ̄ hyperons. The results are also measured as a function of pT and xF with no significant dependence on these variables observed. The results are compared with previous experimental measurements at different center-of-mass energies and collision environments.
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
   European Particle physics Latin American NETwork
   EPLANET
   European Commission
   SEVENTH FRAMEWORK PROGRAMME - SP3-People - Marie-Curie Actions
   246806
24-dic-2025
Article (author)
File in questo prodotto:
File Dimensione Formato  
rc6r-zt9q(1).pdf

accesso aperto

Tipologia: Publisher's version/PDF
Licenza: Creative commons
Dimensione 787.11 kB
Formato Adobe PDF
787.11 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

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/2434/1251716
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 1
  • OpenAlex ND
social impact