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Measurement of the prompt J/? pair production cross-section in pp collisions at vs=8 TeV with the ATLAS detector

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posted on 2023-06-09, 07:11 authored by Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, C A Chavez Barajas, Antonella De SantoAntonella De Santo, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, K Suruliz, Mark SuttonMark Sutton, Iacopo Vivarelli, The ATLAS Collaboration
The production of two prompt J/? mesons, each with transverse momenta pT > 8.5 GeV and rapidity |y| < 2.1, is studied using a sample of proton-proton collisions at vs = 8 TeV, corresponding to an integrated luminosity of 11.4 fb-1 collected in 2012 with the ATLAS detector at the LHC. The differential cross-section, assuming unpolarised J/? production, is measured as a function of the transverse momentum of the lower-pT J/? meson, di-J/? pT and mass, the difference in rapidity between the two J/? mesons, and the azimuthal angle between the two J/? mesons. The fraction of prompt pair events due to double parton scattering is determined by studying kinematic correlations between the two J/? mesons. The total and double parton scattering cross-sections are compared with predictions. The effective cross-section of double parton scattering is measured to be seff = 6.3 ± 1.6(stat) ± 1.0(syst) mb.

Funding

ATLAS; G0275; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/I006048/1

History

Publication status

  • Published

File Version

  • Published version

Journal

European Physical Journal C

ISSN

1434-6044

Publisher

Springer Verlag

Issue

2

Volume

77

Article number

a76

Department affiliated with

  • Physics and Astronomy Publications

Research groups affiliated with

  • Experimental Particle Physics Research Group Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2017-07-13

First Open Access (FOA) Date

2017-07-13

First Compliant Deposit (FCD) Date

2017-07-13

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