Study of hard double-parton scattering in four-jet events in pp collisions root s=7 TeV with the ATLAS experiment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10369894" target="_blank" >RIV/00216208:11320/16:10369894 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21220/16:00319612 RIV/68407700:21340/16:00319612 RIV/68407700:21670/16:00319612

Result on the web

<a href="http://dx.doi.org/10.1007/JHEP11(2016)110" target="_blank" >http://dx.doi.org/10.1007/JHEP11(2016)110</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP11(2016)110" target="_blank" >10.1007/JHEP11(2016)110</a>

Result language

angličtina

Original language name

Study of hard double-parton scattering in four-jet events in pp collisions root s=7 TeV with the ATLAS experiment

Original language description

Inclusive four-jet events produced in proton-proton collisions at a centre-of mass energy of root s = 7 TeV are analysed for the presence of hard double-parton scattering using data corresponding to an integrated luminosity of 37.3 pb(-1), collected with the ATLAS detector at the LHC. The contribution of hard double-parton scattering to the production of four -jet events is extracted using an artificial neural network, assuming that hard double-parton scattering can be approximated by an uncorrelated overlaying of dijet events. For events containing at least four jets with transverse momentum PT &gt;= 20 GeV and pseudorapidity vertical bar eta vertical bar &lt;= 4.4, and at least one having pT &gt;= 42.5 GeV, the contribution of hard double-parton scattering is estimated to be fDps = 0.092(-0.011)(+0.0005) (stat.) (+0.03337)(-0.011) (syst.). After combining this measurement with those of the inclusive dijet and four -jet cross -sections in the appropriate phase space regions, the effective cross-section, sigma(eff,) was determined to be sigma(eff) = 14.9(-1.0)(+1.2) (stat.) (+5.1)(-3.8) (syst.) mb. This result is consistent within the quoted uncertainties with previous measurements of sigma(eff), performed at centre-of-mass energies between 63 GeV and 8 TeV using various final states, and it corresponds to 21(-6%)(+7) of the total inelastic cross-section measured at root s = 7 TeV. The distributions of the observables sensitive to the contribution of hard double-parton scattering, corrected for detector effects, are also provided.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10303 - Particles and field physics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Journal of High Energy Physics [online]

ISSN

1029-8479

e-ISSN

—

Volume of the periodical

Neuveden

Issue of the periodical within the volume

11

Country of publishing house

DE - GERMANY

Number of pages

52

Pages from-to

—

UT code for WoS article

000399296300002

EID of the result in the Scopus database

—