Production of pions, kaons and protons in pp collisions at s = 900 GeV with ALICE at the LHC

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F11%3A00374463" target="_blank" >RIV/68378271:_____/11:00374463 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/11:00374463

Výsledek na webu

<a href="http://dx.doi.org/10.1140/epjc/s10052-011-1655-9" target="_blank" >http://dx.doi.org/10.1140/epjc/s10052-011-1655-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-011-1655-9" target="_blank" >10.1140/epjc/s10052-011-1655-9</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Production of pions, kaons and protons in pp collisions at s = 900 GeV with ALICE at the LHC

Popis výsledku v původním jazyce

The production of ?+, ?, K+, K, p, and p at mid-rapidity has been measured in proton-proton collisions at s = 900 GeV with the ALICE detector. Particle identification is performed using the specific energy loss in the inner tracking silicon detector andthe time projection chamber. In addition, time-of-flight information is used to identify hadrons at higher momenta. Finally, the distinctive kink topology of the weak decay of charged kaons is used for an alternative measurement of the kaon transverse momentum (pt) spectra. Since these various particle identification tools give the best separation capabilities over different momentum ranges, the results are combined to extract spectra from pt = 100 MeV/c to 2.5 GeV/c. The measured spectra are further compared with QCD-inspired models which yield a poor description. The total yields and the mean pt are compared with previous measurements, and the trends as a function of collision energy are discussed.

Název v anglickém jazyce

Production of pions, kaons and protons in pp collisions at s = 900 GeV with ALICE at the LHC

Popis výsledku anglicky

The production of ?+, ?, K+, K, p, and p at mid-rapidity has been measured in proton-proton collisions at s = 900 GeV with the ALICE detector. Particle identification is performed using the specific energy loss in the inner tracking silicon detector andthe time projection chamber. In addition, time-of-flight information is used to identify hadrons at higher momenta. Finally, the distinctive kink topology of the weak decay of charged kaons is used for an alternative measurement of the kaon transverse momentum (pt) spectra. Since these various particle identification tools give the best separation capabilities over different momentum ranges, the results are combined to extract spectra from pt = 100 MeV/c to 2.5 GeV/c. The measured spectra are further compared with QCD-inspired models which yield a poor description. The total yields and the mean pt are compared with previous measurements, and the trends as a function of collision energy are discussed.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BF - Elementární částice a fyzika vysokých energií

OECD FORD obor

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Projekt

<a href="/cs/project/LA08015" target="_blank" >LA08015: Spolupráce ČR s CERN</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

European Physical Journal C

ISSN

1434-6044

e-ISSN

—

Svazek periodika

71

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

22

Strana od-do

1-22

Kód UT WoS článku

000292556400017

EID výsledku v databázi Scopus

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