Measurement of charm production at central rapidity in proton proton collisions at sqrt{s}=2.76 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F12%3A00196532" target="_blank" >RIV/68407700:21340/12:00196532 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.springerlink.com/content/026172967ng46011/fulltext.pdf" target="_blank" >http://www.springerlink.com/content/026172967ng46011/fulltext.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP07(2012)191" target="_blank" >10.1007/JHEP07(2012)191</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of charm production at central rapidity in proton proton collisions at sqrt{s}=2.76 TeV

Popis výsledku v původním jazyce

The pt-differential production cross sections of the prompt (B feed-down sub- tracted) charmed mesons D0, D+, and D*+ in the rapidity range |y| < 0.5, and for transverse momentum 1 < pt < 12 GeV/c, were measured in proton-proton collisions at root s = 2.76 TeV with the ALICE detector at the Large Hadron Collider. The analysis ex- ploited the hadronic decays D0 -> K-?+, D+ -> K-?+?+, D*+ -> D0?+, and their charge conjugates, and was performed on a Lint = 1.1 nb-1 event sample collected in 2011 with a minimum-bias trigger. The total charm production cross section at root s = 2.76 TeV and at 7 TeV was evaluated by extrapolating to the full phase space the pt-differential production cross sections at root s = 2.76 TeV and our previous measurements at roots = 7 TeV. The results were compared to existing measurements and to perturbative-QCD calculations. The fraction of cd D mesons produced in a vector state was also determined.

Název v anglickém jazyce

Measurement of charm production at central rapidity in proton proton collisions at sqrt{s}=2.76 TeV

Popis výsledku anglicky

The pt-differential production cross sections of the prompt (B feed-down sub- tracted) charmed mesons D0, D+, and D*+ in the rapidity range |y| < 0.5, and for transverse momentum 1 < pt < 12 GeV/c, were measured in proton-proton collisions at root s = 2.76 TeV with the ALICE detector at the Large Hadron Collider. The analysis ex- ploited the hadronic decays D0 -> K-?+, D+ -> K-?+?+, D*+ -> D0?+, and their charge conjugates, and was performed on a Lint = 1.1 nb-1 event sample collected in 2011 with a minimum-bias trigger. The total charm production cross section at root s = 2.76 TeV and at 7 TeV was evaluated by extrapolating to the full phase space the pt-differential production cross sections at root s = 2.76 TeV and our previous measurements at roots = 7 TeV. The results were compared to existing measurements and to perturbative-QCD calculations. The fraction of cd D mesons produced in a vector state was also determined.

Druh

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

CEP obor

BF - Elementární částice a fyzika vysokých energií

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Journal of High Energy Physics

ISSN

1126-6708

e-ISSN

—

Svazek periodika

2012

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

21

Strana od-do

—

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—