Search for light scalar top-quark pair production in final states with two leptons with the ATLAS detector in sqrt{s} = 7 TeV proton-proton collisions

Kód výsledku v IS VaVaI

RIV/68378271:_____/12:00389845 - isvavai.cz

Výsledek na webu

http://dx.doi.org/10.1140/epjc/s10052-012-2237-1

DOI - Digital Object Identifier

10.1140/epjc/s10052-012-2237-1

Jazyk výsledku

angličtina

Název v původním jazyce

Search for light scalar top-quark pair production in final states with two leptons with the ATLAS detector in sqrt{s} = 7 TeV proton-proton collisions

Popis výsledku v původním jazyce

A measurement of event shape variables is presented for large momentum transfer proton-proton collisions using the ATLAS detector at the Large Hadron Collider. Six event shape variables calculated using hadronic jets are studied in inclusive multi-jet events in 35 pb^-1 of integrated luminosity at a center-of-mass energy of sqrt(s) = 7 TeV. These measurements are compared to predictions by three Monte Carlo event generators containing leading-logarithmic parton showers matched to leading order matrix elements for 2 to 2 and 2 to n (n=2,...6) scattering. Measurements of the third-jet resolution parameter, aplanarity, thrust, sphericity, and transverse sphericity are generally well described. The mean value of each event shape variable is evaluated as afunction of the average momentum of the two leading jets pT1 and pT2, with a mean pT approaching 1 TeV.

Název v anglickém jazyce

Search for light scalar top-quark pair production in final states with two leptons with the ATLAS detector in sqrt{s} = 7 TeV proton-proton collisions

Popis výsledku anglicky

A measurement of event shape variables is presented for large momentum transfer proton-proton collisions using the ATLAS detector at the Large Hadron Collider. Six event shape variables calculated using hadronic jets are studied in inclusive multi-jet events in 35 pb^-1 of integrated luminosity at a center-of-mass energy of sqrt(s) = 7 TeV. These measurements are compared to predictions by three Monte Carlo event generators containing leading-logarithmic parton showers matched to leading order matrix elements for 2 to 2 and 2 to n (n=2,...6) scattering. Measurements of the third-jet resolution parameter, aplanarity, thrust, sphericity, and transverse sphericity are generally well described. The mean value of each event shape variable is evaluated as afunction of the average momentum of the two leading jets pT1 and pT2, with a mean pT approaching 1 TeV.

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

LA08032: Mezinárodní experiment ATLAS-CERN

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

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

72

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

20

Strana od-do

1-20

Kód UT WoS článku

000312074800038

EID výsledku v databázi Scopus

—