Elsevier

Physics Letters B

Volume 751, 17 December 2015, Pages 376-395
Physics Letters B

Measurement of the production of neighbouring jets in lead–lead collisions at sNN=2.76TeV with the ATLAS detector

https://doi.org/10.1016/j.physletb.2015.10.059Get rights and content
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Abstract

This Letter presents measurements of correlated production of nearby jets in Pb+Pb collisions at sNN=2.76TeV using the ATLAS detector at the Large Hadron Collider. The measurement was performed using 0.14nb1 of data recorded in 2011. The production of correlated jet pairs was quantified using the rate, RΔR, of “neighbouring” jets that accompany “test” jets within a given range of angular distance, ΔR, in the pseudorapidity–azimuthal angle plane. The jets were measured in the ATLAS calorimeter and were reconstructed using the anti-kt algorithm with radius parameters d=0.2, 0.3, and 0.4. RΔR was measured in different Pb+Pb collision centrality bins, characterized by the total transverse energy measured in the forward calorimeters. A centrality dependence of RΔR is observed for all three jet radii with RΔR found to be lower in central collisions than in peripheral collisions. The ratios formed by the RΔR values in different centrality bins and the values in the 40–80% centrality bin are presented.

Cited by (0)

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

e

Also at TRIUMF, Vancouver, BC, Canada.

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

i

Also at Tomsk State University, Tomsk, Russia.

j

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

k

Also at Universita di Napoli Parthenope, Napoli, Italy.

l

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

m

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

n

Also at Chinese University of Hong Kong, China.

o

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

p

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

q

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

r

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

s

Also at CERN, Geneva, Switzerland.

t

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

u

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

v

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

w

Also at Hellenic Open University, Patras, Greece.

x

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

y

Also at LAL, Université Paris-Sud and CNRS/IN2P3, Orsay, France.

z

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

aa

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

ab

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

ac

Also at School of Physical Sciences, National Institute of Science Education and Research, Bhubaneswar, India.

ad

Also at Dipartimento di Fisica, Sapienza Università di Roma, Roma, Italy.

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

ah

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

ai

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

aj

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

ak

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

al

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

am

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

an

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

ao

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

ap

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

aq

Also at Discipline of Physics, University of KwaZulu-Natal, Durban, South Africa.

ar

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

Deceased.

E-mail address: [email protected].