Measurement of inclusive charged-particle b-jet production in pp and p-Pb collisions at √sNN = 5.02 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00553659" target="_blank" >RIV/68378271:_____/22:00553659 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/22:00553659

Výsledek na webu

<a href="https://doi.org/10.1007/JHEP01(2022)178" target="_blank" >https://doi.org/10.1007/JHEP01(2022)178</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP01(2022)178" target="_blank" >10.1007/JHEP01(2022)178</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of inclusive charged-particle b-jet production in pp and p-Pb collisions at √sNN = 5.02 TeV

Popis výsledku v původním jazyce

A measurement of the inclusive b-jet production cross section is presented in pp and p-Pb collisions at root S-NN = 5.02 TeV, using data collected with the ALICE detector at the LHC. The jets were reconstructed in the central rapidity region vertical bar eta vertical bar < 0.5 from charged particles using the anti-kT algorithm with resolution parameter R = 0.4. Identification of b jets exploits the long lifetime of b hadrons, using the properties of secondary vertices and impact parameter distributions. The p(T)-differential inclusive production cross section of b jets, as well as the corresponding inclusive b-jet fraction, are reported for pp and p-Pb collisions in the jet transverse momentum range 10 <= p(T)(,)(ch)( jet) <= 100 GeV/c, together with the nuclear modification factor, R-pPb(b-jet). The analysis thus extends the lower p(T) limit of b-jet measurements at the LHC. The nuclear modification factor is found to be consistent with unity, indicating that the production of b jets in p-Pb at root S-NN = 5.02 TeV is not affected by cold nuclear matter effects within the current precision. The measurements are well reproduced by POWHEG NLO pQCD calculations with PYTHIA fragmentation.

Název v anglickém jazyce

Measurement of inclusive charged-particle b-jet production in pp and p-Pb collisions at √sNN = 5.02 TeV

Popis výsledku anglicky

A measurement of the inclusive b-jet production cross section is presented in pp and p-Pb collisions at root S-NN = 5.02 TeV, using data collected with the ALICE detector at the LHC. The jets were reconstructed in the central rapidity region vertical bar eta vertical bar < 0.5 from charged particles using the anti-kT algorithm with resolution parameter R = 0.4. Identification of b jets exploits the long lifetime of b hadrons, using the properties of secondary vertices and impact parameter distributions. The p(T)-differential inclusive production cross section of b jets, as well as the corresponding inclusive b-jet fraction, are reported for pp and p-Pb collisions in the jet transverse momentum range 10 <= p(T)(,)(ch)( jet) <= 100 GeV/c, together with the nuclear modification factor, R-pPb(b-jet). The analysis thus extends the lower p(T) limit of b-jet measurements at the LHC. The nuclear modification factor is found to be consistent with unity, indicating that the production of b jets in p-Pb at root S-NN = 5.02 TeV is not affected by cold nuclear matter effects within the current precision. The measurements are well reproduced by POWHEG NLO pQCD calculations with PYTHIA fragmentation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/LTT17018" target="_blank" >LTT17018: Získávání nových poznatků o mikrosvětě v infrastruktuře CERN</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

1029-8479

Svazek periodika

2022

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

41

Strana od-do

178

Kód UT WoS článku

000748418900001

EID výsledku v databázi Scopus

2-s2.0-85124814041