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Measurement of ? c1 and ? c2 production with sv = 7 TeV pp collisions at ATLAS

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journal contribution
posted on 2023-06-08, 21:40 authored by Alessandro CerriAlessandro Cerri, Antonella De SantoAntonella De Santo, Z J Grout, C T Potter, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, Mark SuttonMark Sutton, Iacopo Vivarelli, others (ATLAS collaboration)
The prompt and non-prompt production cross-sections for the ? c1 and ? c2 charmonium states are measured in pp collisions at sv = 7 TeV with the ATLAS detector at the LHC using 4.5 fb-1 of integrated luminosity. The ? c states are reconstructed through the radiative decay ? c ? J/?? (with J/? ? µ + µ -) where photons are reconstructed from ? ? e + e - conversions. The production rate of the ? c2 state relative to the ? c1 state is measured for prompt and non-prompt ? c as a function of J/? transverse momentum. The prompt ? c cross-sections are combined with existing measurements of prompt J/? production to derive the fraction of prompt J/? produced in feed-down from ? c decays. The fractions of ? c1 and ? c2 produced in b-hadron decays are also measured.

Funding

Consolidated Grant; G0927; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/K001329/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of High Energy Physics

ISSN

1029-8479

Publisher

Springer Verlag

Issue

7

Volume

2014

Department affiliated with

  • Physics and Astronomy Publications

Notes

Published as part of ATLAS collaboration

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2015-07-17

First Open Access (FOA) Date

2015-07-17

First Compliant Deposit (FCD) Date

2015-07-16

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