Measurement of the Nuclear Modification Factor and Prompt Charged Particle Production in p-Pb and pp Collisions at SQRT(SNN) =5 TeV
The production of prompt charged particles in proton–lead collisions and in proton–proton collisions at the nucleon–nucleon center-of-mass energy SQRT(sNN) = 5 TeV is studied at LHCb as a function of pseudorapidity (eta) and transverse momentum (pT) with respect to the proton beam direction. The nuc...
| Autores: | , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universidad de Santiago de Compostela (USC) |
| Repositorio: | Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela |
| Idioma: | inglés |
| OAI Identifier: | oai:minerva.usc.gal:10347/44778 |
| Acceso en línea: | https://hdl.handle.net/10347/44778 |
| Access Level: | acceso abierto |
| Palabra clave: | Fragmentation into hadrons Relativistic heavy-ion collisions Hadrons Hadron colliders Particle production 2290 Física altas energías |
| Sumario: | The production of prompt charged particles in proton–lead collisions and in proton–proton collisions at the nucleon–nucleon center-of-mass energy SQRT(sNN) = 5 TeV is studied at LHCb as a function of pseudorapidity (eta) and transverse momentum (pT) with respect to the proton beam direction. The nuclear modification factor for charged particles is determined as a function of eta between -4.8 < eta < -2.5 (backward region) and 2.0 < eta < 4.8 (forward region), and pT between 0.2 < pT < 8.0 GeV/c. The results show a suppression of charged particle production in proton–lead collisions relative to proton–proton collisions in the forward region and an enhancement in the backward region for pT larger than 1.5 GeV/c. This measurement constrains nuclear PDFs and saturation models at previously unexplored values of the parton momentum fraction down to 10^-6. |
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