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Measurement of the production cross section of prompt J/? mesons in association with a W± boson in pp collisions at vs = 7 TeV with the ATLAS detector

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posted on 2023-06-09, 06:01 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 process pp ? W±J/? provides a powerful probe of the production mechanism of charmonium in hadronic collisions, and is also sensitive to multiple parton interactions in the colliding protons. Using the 2011 ATLAS dataset of 4.5 fb-¹ of vs = 7 TeV pp collisions at the LHC, the first observation is made of the production of W± + prompt J/? events in hadronic collisions, using W± ? µ?µ and J/? ? µ+µ-. A yield of 27.4-6.5+7.5 W± + prompt J/? events is observed, with a statistical significance of 5.1s. The production rate as a ratio to the inclusive W± boson production rate is measured, and the double parton scattering contribution to the cross section is estimated.

Funding

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

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of High Energy Physics

ISSN

1029-8479

Publisher

Springer Verlag

Issue

4

Volume

2014

Article number

a172

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

2017-05-02

First Open Access (FOA) Date

2017-05-02

First Compliant Deposit (FCD) Date

2017-05-02

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