Transverse Λ polarization in unpolarized pp → jet Λ↑ X

D'Alesio, Umberto
;Murgia, Francesco;Zaccheddu, Marco
2024-01-01

Abstract

In this Letter, we investigate the spontaneous transverse polarization of Λ hyperons produced in unpolarized pp collisions inside a jet, by adopting a TMD approach where transverse momentum effects are included only in the fragmentation process. We will present predictions based on the parametrizations of the Λ polarizing fragmentation function as extracted from fits to Belle e+e− data. These estimates will be compared against preliminary STAR data. We will then be able to explore the universality properties of the quark polarizing fragmentation function and, for the first time, the role of its gluon counterpart.
2024
Inglese
PHYSICS LETTERS. SECTION B
851
138552
7
2-s2.0-85188178715
Esperti anonimi
internazionale
scientifica
Hadron-in-jet; Λ polarization; TMD approach; Polarizing fragmentation function
sì
D'Alesio, Umberto; Gamberg, Leonard; Murgia, Francesco; Zaccheddu, Marco
1.1 Articolo in rivista
info:eu-repo/semantics/article
1 Contributo su Rivista::1.1 Articolo in rivista
262
4
open
   The strong interaction at the frontier of knowledge: fundamental research and applications
   STRONG-2020
   European Commission
   Horizon 2020 Framework Programme
   824093
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