Isolated photon-hadron production in high energy pp and pA collisions at RHIC and LHC

Znanstveni rad - Izvorni znanstveni rad

• Autor: Sanjin Benić
• Autor: Oscar Garcia-Montero
• Autor: Anton Perkov
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

We compute the isolated photon production in association with a charged hadron at midrapidity in pp and pA based on the Color Glass Condensate (CGC) framework of high energy Quantum Chromodynamics (QCD) where, for the first time, we incorporate the Sudakov effect of soft gluon emissions. Our results are based on the leading order qg → qγ channel in the CGC framework and confronted with the recent data from Relativistic Heavy-Ion Collider (RHIC) and Large Hadron Collider (LHC) concerning the angular distributions and out-of-plane transverse momentum distributions. We find that, while the CGC computation alone results in too narrow distributions, with the help of the Sudakov effect, we can get a satisfactory description of the data. With this as a benchmark, we provide predictions for the magnitude of the nuclear effect brought by the phenomena of gluon saturation in the CGC.

• Ključne riječi (engleski): Color Glass Condensate; Sudakov resummation; photon-hadron production
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Physical Review D
• Brojčani podaci: vol. 105, br. 11, 114052
• p-ISSN: 2470-0010
• e-ISSN: 2470-0029
• DOI: https://doi.org/10.1103/PhysRevD.105.114052
• URN:NBN: urn:nbn:hr:217:693173
• Datum objave publikacije: 2022
• Projekt: Šifra: UIP-2019-04-5332; Naziv (hrvatski): Gluonsko zasićenje u visoko energetskim proton-jezgra sudarima - istraživanje novih fenomenoloških smjernica; Naziv (engleski): Gluon saturation in high energy proton-nucleus collisions - exploring new phenomenological directions; Kratica: SAT-PHENO; Voditelj: Sanjin Benić; Pravna nadležnost: Hrvatska; Financijer: Hrvatska zaklada za znanost; Linija financiranja: Installation Research Projects
• URL dokumenta: https://link.aps.org/doi/10.1103/PhysRevD.105.114052
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. Received 10 March 2022; accepted 6 June 2022; published 29 June 2022.
• Datum i vrijeme pohrane: 2024-08-31 17:58:05