Correlations and flavors in jets in ALICE

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F16%3A00458640" target="_blank" >RIV/61389005:_____/16:00458640 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1742-6596/668/1/012018" target="_blank" >http://dx.doi.org/10.1088/1742-6596/668/1/012018</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/668/1/012018" target="_blank" >10.1088/1742-6596/668/1/012018</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Correlations and flavors in jets in ALICE

Popis výsledku v původním jazyce

We report on the measurement of hadron composition in charged jets in pp at root s = 7 TeV and show the first data on particle type dependent jet fragmentation at the LHC. Further, we present (Lambda + (Lambda) over bar)/2K(S)(0) ratios measured in charged jets in Pb-Pb collisions at root s(NN) = 2.76 TeV and in p-Pb collisions at root s(NN) = 5.02 TeV. While the ratio of the inclusive p(T) spectra of A and K-S(0) exhibits centrality dependent enhancement both in the Pb-Pb and p-Pb system, the (Lambda + (Lambda) over bar)/2K(S)(0) ratio measured in charged jets reveals that jet fragmentation does not contribute to the observed baryon anomaly. nFinally, we discuss the measurement of semi-inclusive p(T) spectra of charged jets that recoil from a high-p(T) hadron trigger in Pb-Pb and pp collisions at root s(NN) = 2.76 TeV and root s = 7 TeV, respectively. The jet yield uncorrelated with the trigger hadron is removed at the event-ensemble level without introducing a bias on the jet population, which is therefore infrared and collinear safe. The recoil jet yield in central Pb Pb is found to be suppressed w.r.t. that from pp PYTHIA reference. On the other hand, there is no sign of intra-jet broadening even for anti-k(T) jets with a resolution parameter as large as R = 0.5.

Název v anglickém jazyce

Correlations and flavors in jets in ALICE

Popis výsledku anglicky

We report on the measurement of hadron composition in charged jets in pp at root s = 7 TeV and show the first data on particle type dependent jet fragmentation at the LHC. Further, we present (Lambda + (Lambda) over bar)/2K(S)(0) ratios measured in charged jets in Pb-Pb collisions at root s(NN) = 2.76 TeV and in p-Pb collisions at root s(NN) = 5.02 TeV. While the ratio of the inclusive p(T) spectra of A and K-S(0) exhibits centrality dependent enhancement both in the Pb-Pb and p-Pb system, the (Lambda + (Lambda) over bar)/2K(S)(0) ratio measured in charged jets reveals that jet fragmentation does not contribute to the observed baryon anomaly. nFinally, we discuss the measurement of semi-inclusive p(T) spectra of charged jets that recoil from a high-p(T) hadron trigger in Pb-Pb and pp collisions at root s(NN) = 2.76 TeV and root s = 7 TeV, respectively. The jet yield uncorrelated with the trigger hadron is removed at the event-ensemble level without introducing a bias on the jet population, which is therefore infrared and collinear safe. The recoil jet yield in central Pb Pb is found to be suppressed w.r.t. that from pp PYTHIA reference. On the other hand, there is no sign of intra-jet broadening even for anti-k(T) jets with a resolution parameter as large as R = 0.5.

Druh

D - Stať ve sborníku

CEP obor

BG - Jaderná, atomová a molekulová fyzika, urychlovače

OECD FORD obor

—

Projekt

<a href="/cs/project/LG13031" target="_blank" >LG13031: Spolupráce ČR s CERN</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

Journal of Physics Conference Series

ISBN

—

ISSN

1742-6588

e-ISSN

—

Počet stran výsledku

8

Strana od-do

—

Název nakladatele

IOP Publishing Ltd.

Místo vydání

Bristol

Místo konání akce

Dubna

Datum konání akce

6. 7. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000371691300018