The transverse polarization of Λ and anti-Λ hyperons is measured in p Pb 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 ranges 0.15 < p_T < 6.00 GeV/c, and Feynman-x in the ranges 0.005 < x_F < 0.040 (forward region) and −0.10 < x_F < −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 anti-Λ hyperons. The results are also measured as a function of p_T and x_F 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.

Aaij, R., Abdelmotteleb, A. s. w., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adefisoye, A. a., et al. (2025). Measurement of transverse Λ and anti-Λ hyperon polarization in p Pb collisions at √s_NN = 5.02 TeV. PHYSICAL REVIEW D, 112(11), 1-15 [10.1103/rc6r-zt9q].

Measurement of transverse Λ and anti-Λ hyperon polarization in p Pb collisions at √s_NN = 5.02 TeV

Carbone, A.;Ferrari, F.;Galli, D.;Patrignani, C.;Spedicato, E.;Zenesini, F.;
2025

Abstract

The transverse polarization of Λ and anti-Λ hyperons is measured in p Pb 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 ranges 0.15 < p_T < 6.00 GeV/c, and Feynman-x in the ranges 0.005 < x_F < 0.040 (forward region) and −0.10 < x_F < −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 anti-Λ hyperons. The results are also measured as a function of p_T and x_F 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.
2025
Aaij, R., Abdelmotteleb, A. s. w., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adefisoye, A. a., et al. (2025). Measurement of transverse Λ and anti-Λ hyperon polarization in p Pb collisions at √s_NN = 5.02 TeV. PHYSICAL REVIEW D, 112(11), 1-15 [10.1103/rc6r-zt9q].
Aaij, R.; Abdelmotteleb, A.  s.  w.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adefisoye, A.  a.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Agapop...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1036905
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