Elsevier

Physics Letters B

Volume 706, Issues 4–5, 5 January 2012, Pages 276-294
Physics Letters B

Measurement of the Wτντ cross section in pp collisions at s=7 TeV with the ATLAS experiment

https://doi.org/10.1016/j.physletb.2011.11.057Get rights and content
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open access

Abstract

The cross section for the production of W bosons with subsequent decay Wτντ is measured with the ATLAS detector at the LHC. The analysis is based on a data sample that was recorded in 2010 at a proton–proton center-of-mass energy of s=7 TeV and corresponds to an integrated luminosity of 34 pb−1. The cross section is measured in a region of high detector acceptance and then extrapolated to the full phase space. The product of the total W production cross section and the Wτντ branching ratio is measured to be σWτντtot=11.1±0.3(stat)±1.7(syst)±0.4(lumi) nb.

Keywords

W boson
Standard Model
τ Lepton

Cited by (0)

© CERN for the benefit of the ATLAS Collaboration.

E-mail address: [email protected].

a

Also at Laboratorio de Instrumentacao e Fisica Experimental de Particulas – LIP, Lisboa, Portugal.

b

Also at Faculdade de Ciencias and CFNUL, Universidade de Lisboa, Lisboa, Portugal.

c

Also at Particle Physics Department, Rutherford Appleton Laboratory, Didcot, United Kingdom.

d

Also at CPPM, Aix-Marseille Université and CNRS/IN2P3, Marseille, France.

e

Also at TRIUMF, Vancouver, BC, Canada.

f

Also at Department of Physics, California State University, Fresno, CA, United States.

g

Also at Faculty of Physics and Applied Computer Science, AGH – University of Science and Technology, Krakow, Poland.

h

Also at Fermilab, Batavia, IL, United States.

i

Also at Department of Physics, University of Coimbra, Coimbra, Portugal.

j

Also at Università di Napoli Parthenope, Napoli, Italy.

k

Also at Institute of Particle Physics (IPP), Canada.

l

Also at Department of Physics, Middle East Technical University, Ankara, Turkey.

m

Also at Louisiana Tech University, Ruston, LA, United States.

n

Also at Group of Particle Physics, University of Montreal, Montreal, QC, Canada.

o

Also at Institute of Physics, Azerbaijan Academy of Sciences, Baku, Azerbaijan.

p

Also at Institut für Experimentalphysik, Universität Hamburg, Hamburg, Germany.

q

Also at Manhattan College, New York, NY, United States.

r

Also at School of Physics and Engineering, Sun Yat-sen University, Guanzhou, China.

s

Also at Academia Sinica Grid Computing, Institute of Physics, Academia Sinica, Taipei, Taiwan.

t

Also at High Energy Physics Group, Shandong University, Shandong, China.

u

Also at Section de Physique, Université de Genève, Geneva, Switzerland.

v

Also at Departamento de Fisica, Universidade de Minho, Braga, Portugal.

w

Also at Department of Physics and Astronomy, University of South Carolina, Columbia, SC, United States.

x

Also at KFKI Research Institute for Particle and Nuclear Physics, Budapest, Hungary.

y

Also at California Institute of Technology, Pasadena, CA, United States.

z

Also at Institute of Physics, Jagiellonian University, Krakow, Poland.

aa

Also at Department of Physics, Oxford University, Oxford, United Kingdom.

ab

Also at Institute of Physics, Academia Sinica, Taipei, Taiwan.

ac

Also at Department of Physics, The University of Michigan, Ann Arbor, MI, United States.

ad

Also at DSM/IRFU (Institut de Recherches sur les Lois Fondamentales de lʼUnivers), CEA Saclay (Commissariat a lʼEnergie Atomique), Gif-sur-Yvette, France.

ae

Also at Laboratoire de Physique Nucléaire et de Hautes Energies, UPMC and Université Paris-Diderot and CNRS/IN2P3, Paris, France.

af

Also at Department of Physics, Nanjing University, Jiangsu, China.

Deceased.