1 LOGO azul logo utfsm 2018

header area inv 2

area2 480

area2 320

Física Experimental de Alta Energía

Publicaciones

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

Publicaciones

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

Research areas:

Física Experimental de Alta Energía

Year:

2014

Type of Publication:

In Proceeding

Authors:

Journal:

JHEP

Volume:

1404

Pages:

37

Abstract:

The process pp--> W + J/psi 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 sqrt{s} = 7 TeV pp collisions at the LHC, the first observation is made of the production of W + prompt J/psi events in hadronic collisions, using W-->mu+nu and J/psi-->mu+mu. A yield of 27.4+7.5-6.5 W + prompt J/psi events is observed, with a statistical significance of 5.1 sigma. 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.

 

[Volver]