Elsevier

Physics Letters B

Volume 705, Issue 3, 11 November 2011, Pages 174-192
Physics Letters B

Search for neutral MSSM Higgs bosons decaying to τ+τ pairs in proton–proton collisions at s=7 TeV with the ATLAS detector

https://doi.org/10.1016/j.physletb.2011.10.001Get rights and content
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Abstract

A search for neutral Higgs bosons decaying to pairs of τ leptons with the ATLAS detector at the LHC is presented. The analysis is based on proton–proton collisions at a center-of-mass energy of 7 TeV, recorded in 2010 and corresponding to an integrated luminosity of 36 pb−1. After signal selection, 276 events are observed in this data sample. The observed number of events is consistent with the total expected background of 269±36 events. Exclusion limits at the 95% confidence level are derived for the production cross section of a generic Higgs boson ϕ as a function of the Higgs boson mass and for A/H/h production in the Minimal Supersymmetric Standard Model (MSSM) as a function of the parameters mA and tanβ.

Keywords

Higgs boson
MSSM
Tau 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 Department of Physics, University of Coimbra, Coimbra, Portugal.

i

Also at Università di Napoli Parthenope, Napoli, Italy.

j

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

k

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

l

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

m

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

n

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

o

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

p

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

q

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

r

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

s

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

t

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

u

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

v

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

w

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

x

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

y

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

z

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

aa

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

ab

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

ac

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

ad

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

ae

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

Deceased.