Elsevier

Physics Letters B

Volume 761, 10 October 2016, Pages 372-392
Physics Letters B

Search for high-mass new phenomena in the dilepton final state using proton–proton collisions at s=13TeV with the ATLAS detector

https://doi.org/10.1016/j.physletb.2016.08.055Get rights and content
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Abstract

A search is conducted for both resonant and non-resonant high-mass new phenomena in dielectron and dimuon final states. The search uses 3.2fb1 of proton–proton collision data, collected at s=13TeV by the ATLAS experiment at the LHC in 2015. The dilepton invariant mass is used as the discriminating variable. No significant deviation from the Standard Model prediction is observed; therefore limits are set on the signal model parameters of interest at 95% credibility level. Upper limits are set on the cross-section times branching ratio for resonances decaying to dileptons, and the limits are converted into lower limits on the resonance mass, ranging between 2.74 TeV and 3.36 TeV, depending on the model. Lower limits on the qq contact interaction scale are set between 16.7 TeV and 25.2 TeV, also depending on the model.

Cited by (0)

at

Also affiliated with PKU-CHEP.

a

Also at Department of Physics, King's College London, London, United Kingdom.

b

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

c

Also at Novosibirsk State University, Novosibirsk, Russia.

d

Also at TRIUMF, Vancouver BC, Canada.

e

Also at Department of Physics & Astronomy, University of Louisville, Louisville, KY, United States.

f

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

g

Also at Department of Physics, University of Fribourg, Fribourg, Switzerland.

h

Also at Departament de Fisica de la Universitat Autonoma de Barcelona, Barcelona, Spain.

i

Also at Departamento de Fisica e Astronomia, Faculdade de Ciencias, Universidade do Porto, Portugal.

j

Also at Tomsk State University, Tomsk, Russia.

k

Also at Universita di Napoli Parthenope, Napoli, Italy.

l

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

m

Also at National Institute of Physics and Nuclear Engineering, Bucharest, Romania.

n

Also at Department of Physics, St. Petersburg State Polytechnical University, St. Petersburg, Russia.

o

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

p

Also at Centre for High Performance Computing, CSIR Campus, Rosebank, Cape Town, South Africa.

q

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

r

Also at Institucio Catalana de Recerca i Estudis Avancats, ICREA, Barcelona, Spain.

s

Also at Graduate School of Science, Osaka University, Osaka, Japan.

t

Also at Department of Physics, National Tsing Hua University, Taiwan.

u

Also at Institute for Mathematics, Astrophysics and Particle Physics, Radboud University Nijmegen/Nikhef, Nijmegen, Netherlands.

v

Also at Department of Physics, The University of Texas at Austin, Austin TX, United States.

w

Also at Institute of Theoretical Physics, Ilia State University, Tbilisi, Georgia.

x

Also at CERN, Geneva, Switzerland.

y

Also at Georgian Technical University (GTU), Tbilisi, Georgia.

z

Also at Ochadai Academic Production, Ochanomizu University, Tokyo, Japan.

aa

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

ab

Also at Hellenic Open University, Patras, Greece.

ac

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

ad

Also at School of Physics, Shandong University, Shandong, China.

ae

Also at Moscow Institute of Physics and Technology State University, Dolgoprudny, Russia.

af

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

ag

Also at Eotvos Lorand University, Budapest, Hungary.

ah

Also at International School for Advanced Studies (SISSA), Trieste, Italy.

ai

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

aj

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

ak

Also at Institute for Nuclear Research and Nuclear Energy (INRNE) of the Bulgarian Academy of Sciences, Sofia, Bulgaria.

al

Also at Faculty of Physics, M.V. Lomonosov Moscow State University, Moscow, Russia.

am

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

an

Also at National Research Nuclear University MEPhI, Moscow, Russia.

ao

Also at Department of Physics, Stanford University, Stanford CA, United States.

ap

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

aq

Also at Flensburg University of Applied Sciences, Flensburg, Germany.

ar

Also at University of Malaya, Department of Physics, Kuala Lumpur, Malaysia.

as

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

Deceased.

E-mail address: [email protected].