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Azimuthal decorrelations and multiple parton interactions in γ+2 jet and γ+3 jet events in pp¯ collisions at s=1.96  TeV

V. M. Abazov35, B. Abbott72, B. S. Acharya29, M. Adams48, T. Adams46, G. D. Alexeev35, G. Alkhazov39, A. Alton60,*, G. Alverson59 et al. (D0 Collaboration)

G. Alverson59, G. A. Alves2, L. S. Ancu34, V. B. Anikeev38, M. Aoki47, M. Arov57, A. Askew46, B. Åsman40, O. Atramentov64, C. Avila8, J. BackusMayes79, F. Badaud13, L. Bagby47, B. Baldin47, D. V. Bandurin46, S. Banerjee29, E. Barberis59, P. Baringer55, J. Barreto3, J. F. Bartlett47, U. Bassler18, V. Bazterra48, S. Beale6, A. Bean55, M. Begalli3, M. Begel70, C. Belanger-Champagne40, L. Bellantoni47, S. B. Beri27, G. Bernardi17, R. Bernhard22, I. Bertram41, M. Besançon18, R. Beuselinck42, V. A. Bezzubov38, P. C. Bhat47, V. Bhatnagar27, G. Blazey49, S. Blessing46, K. Bloom63, A. Boehnlein47, D. Boline69, T. A. Bolton56, E. E. Boos37, G. Borissov41, T. Bose58, A. Brandt75, O. Brandt23, R. Brock61, G. Brooijmans67, A. Bross47, D. Brown17, J. Brown17, X. B. Bu47, M. Buehler78, V. Buescher24, V. Bunichev37, S. Burdin41,†, T. H. Burnett79, C. P. Buszello40, B. Calpas15, E. Camacho-Pérez32, M. A. Carrasco-Lizarraga55, B. C. K. Casey47, H. Castilla-Valdez32, S. Chakrabarti69, D. Chakraborty49, K. M. Chan53, A. Chandra77, G. Chen55, S. Chevalier-Théry18, D. K. Cho74, S. W. Cho31, S. Choi31, B. Choudhary28, T. Christoudias42, S. Cihangir47, D. Claes63, J. Clutter55, M. Cooke47, W. E. Cooper47, M. Corcoran77, F. Couderc18, M.-C. Cousinou15, A. Croc18, D. Cutts74, A. Das44, G. Davies42, K. De75, S. J. de Jong34, E. De La Cruz-Burelo32, F. Déliot18, M. Demarteau47, R. Demina68, D. Denisov47, S. P. Denisov38, S. Desai47, K. DeVaughan63, H. T. Diehl47, M. Diesburg47, A. Dominguez63, T. Dorland79, A. Dubey28, L. V. Dudko37, D. Duggan64, A. Duperrin15, S. Dutt27, A. Dyshkant49, M. Eads63, D. Edmunds61, J. Ellison45, V. D. Elvira47, Y. Enari17, H. Evans51, A. Evdokimov70, V. N. Evdokimov38, G. Facini59, T. Ferbel68, F. Fiedler24, F. Filthaut34, W. Fisher61, H. E. Fisk47, M. Fortner49, H. Fox41, S. Fuess47, T. Gadfort70, A. Garcia-Bellido68, V. Gavrilov36, P. Gay13, W. Geist19, W. Geng15,61, D. Gerbaudo65, C. E. Gerber48, Y. Gershtein64, G. Ginther47,68, G. Golovanov35, A. Goussiou79, P. D. Grannis69, S. Greder19, H. Greenlee47, Z. D. Greenwood57, E. M. Gregores4, G. Grenier20, Ph. Gris13, J.-F. Grivaz16, A. Grohsjean18, S. Grünendahl47, M. W. Grünewald30, F. Guo69, G. Gutierrez47, P. Gutierrez72, A. Haas67,‡, S. Hagopian46, J. Haley59, L. Han7, K. Harder43, A. Harel68, J. M. Hauptman54, J. Hays42, T. Head43, T. Hebbeker21, D. Hedin49, H. Hegab73, A. P. Heinson45, U. Heintz74, C. Hensel23, I. Heredia-De La Cruz32, K. Herner60, M. D. Hildreth53, R. Hirosky78, T. Hoang46, J. D. Hobbs69, B. Hoeneisen12, M. Hohlfeld24, S. Hossain72, Z. Hubacek10,18, N. Huske17, V. Hynek10, I. Iashvili66, R. Illingworth47, A. S. Ito47, S. Jabeen74, M. Jaffré16, S. Jain66, D. Jamin15, R. Jesik42, K. Johns44, M. Johnson47, D. Johnston63, A. Jonckheere47, P. Jonsson42, J. Joshi27, A. Juste47,§, K. Kaadze56, E. Kajfasz15, D. Karmanov37, P. A. Kasper47, I. Katsanos63, R. Kehoe76, S. Kermiche15, N. Khalatyan47, A. Khanov73, A. Kharchilava66, Y. N. Kharzheev35, D. Khatidze74, M. H. Kirby50, J. M. Kohli27, A. V. Kozelov38, J. Kraus61, A. Kumar66, A. Kupco11, T. Kurča20, V. A. Kuzmin37, J. Kvita9, S. Lammers51, G. Landsberg74, P. Lebrun20, H. S. Lee31, S. W. Lee54, W. M. Lee47, J. Lellouch17, L. Li45, Q. Z. Li47, S. M. Lietti5, J. K. Lim31, D. Lincoln47, J. Linnemann61, V. V. Lipaev38, R. Lipton47, Y. Liu7, Z. Liu6, A. Lobodenko39, M. Lokajicek11, P. Love41, H. J. Lubatti79, R. Luna-Garcia32,∥, A. L. Lyon47, A. K. A. Maciel2, D. Mackin77, R. Madar18, R. Magaña-Villalba32, S. Malik63, V. L. Malyshev35, Y. Maravin56, J. Martínez-Ortega32, R. McCarthy69, C. L. McGivern55, M. M. Meijer34, A. Melnitchouk62, D. Menezes49, P. G. Mercadante4, M. Merkin37, A. Meyer21, J. Meyer23, F. Miconi19, N. K. Mondal29, G. S. Muanza15, M. Mulhearn78, E. Nagy15, M. Naimuddin28, M. Narain74, R. Nayyar28, H. A. Neal60, J. P. Negret8, P. Neustroev39, S. F. Novaes5, T. Nunnemann25, G. Obrant39, J. Orduna32, N. Osman42, J. Osta53, G. J. Otero y Garzón1, M. Owen43, M. Padilla45, M. Pangilinan74, N. Parashar52, V. Parihar74, S. K. Park31, J. Parsons67, R. Partridge74,‡, N. Parua51, A. Patwa70, B. Penning47, M. Perfilov37, K. Peters43, Y. Peters43, G. Petrillo68, P. Pétroff16, R. Piegaia1, J. Piper61, M.-A. Pleier70, P. L. M. Podesta-Lerma32,¶, V. M. Podstavkov47, M.-E. Pol2, P. Polozov36, A. V. Popov38, M. Prewitt77, D. Price51, S. Protopopescu70, J. Qian60, A. Quadt23, B. Quinn62, M. S. Rangel2, K. Ranjan28, P. N. Ratoff41, I. Razumov38, P. Renkel76, M. Rijssenbeek69, I. Ripp-Baudot19, F. Rizatdinova73, M. Rominsky47, C. Royon18, P. Rubinov47, R. Ruchti53, G. Safronov36, G. Sajot14, A. Sánchez-Hernández32, M. P. Sanders25, B. Sanghi47, A. S. Santos5, G. Savage47, L. Sawyer57, T. Scanlon42, R. D. Schamberger69, Y. Scheglov39, H. Schellman50, T. Schliephake26, S. Schlobohm79, C. Schwanenberger43, R. Schwienhorst61, J. Sekaric55, H. Severini72, E. Shabalina23, V. Shary18, A. A. Shchukin38, R. K. Shivpuri28, V. Simak10, V. Sirotenko47, N. B. Skachkov35, P. Skubic72, P. Slattery68, D. Smirnov53, K. J. Smith66, G. R. Snow63, J. Snow71, S. Snyder70, S. Söldner-Rembold43, L. Sonnenschein21, A. Sopczak41, M. Sosebee75, K. Soustruznik9, B. Spurlock75, J. Stark14, V. Stolin36, D. A. Stoyanova38, M. Strauss72, D. Strom48, L. Stutte47, L. Suter43, P. Svoisky72, M. Takahashi43, A. Tanasijczuk1, W. Taylor6, M. Titov18, V. V. Tokmenin35, Y.-T. Tsai68, D. Tsybychev69, B. Tuchming18, C. Tully65, P. M. Tuts67, L. Uvarov39, S. Uvarov39, S. Uzunyan49, R. Van Kooten51, W. M. van Leeuwen33, N. Varelas48, E. W. Varnes44, I. A. Vasilyev38, P. Verdier20, A. Verkheev35, L. S. Vertogradov35, M. Verzocchi47, M. Vesterinen43, D. Vilanova18, P. Vint42, P. Vokac10, H. D. Wahl46, M. H. L. S. Wang68, J. Warchol53, G. Watts79, M. Wayne53, M. Weber47,**, L. Welty-Rieger50, A. White75, D. Wicke26, M. R. J. Williams41, G. W. Wilson55, S. J. Wimpenny45, M. Wobisch57, D. R. Wood59, T. R. Wyatt43, Y. Xie47, C. Xu60, S. Yacoob50, R. Yamada47, W.-C. Yang43, T. Yasuda47, Y. A. Yatsunenko35, Z. Ye47, H. Yin47, K. Yip70, S. W. Youn47, J. Yu75, S. Zelitch78, T. Zhao79, B. Zhou60, J. Zhu60, M. Zielinski68, D. Zieminska51, and L. Zivkovic74 (D0 Collaboration)

  • 1Universidad de Buenos Aires, Buenos Aires, Argentina
  • 2LAFEX, Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro, Brazil
  • 3Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
  • 4Universidade Federal do ABC, Santo André, Brazil
  • 5Instituto de Física Teórica, Universidade Estadual Paulista, São Paulo, Brazil
  • 6Simon Fraser University, Vancouver, British Columbia, and York University, Toronto, Ontario, Canada
  • 7University of Science and Technology of China, Hefei, People’s Republic of China
  • 8Universidad de los Andes, Bogotá, Colombia
  • 9Charles University, Faculty of Mathematics and Physics, Center for Particle Physics, Prague, Czech Republic
  • 10Czech Technical University in Prague, Prague, Czech Republic
  • 11Center for Particle Physics, Institute of Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
  • 12Universidad San Francisco de Quito, Quito, Ecuador
  • 13LPC, Université Blaise Pascal, and CNRS/IN2P3, Clermont, France
  • 14LPSC, Université Joseph Fourier Grenoble 1, CNRS/IN2P3, and Institut National Polytechnique de Grenoble, Grenoble, France
  • 15CPPM, Aix-Marseille Université, and CNRS/IN2P3, Marseille, France
  • 16LAL, Université Paris-Sud, and CNRS/IN2P3, Orsay, France
  • 17LPNHE, Universités Paris VI and VII, and CNRS/IN2P3, Paris, France
  • 18CEA, Irfu, SPP, Saclay, France
  • 19IPHC, Université de Strasbourg, and CNRS/IN2P3, Strasbourg, France
  • 20IPNL, Université Lyon 1, CNRS/IN2P3, Villeurbanne, France and Université de Lyon, Lyon, France
  • 21III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany
  • 22Physikalisches Institut, Universität Freiburg, Freiburg, Germany
  • 23II. Physikalisches Institut, Georg-August-Universität Göttingen, Göttingen, Germany
  • 24Institut für Physik, Universität Mainz, Mainz, Germany
  • 25Ludwig-Maximilians-Universität München, München, Germany
  • 26Fachbereich Physik, Bergische Universität Wuppertal, Wuppertal, Germany
  • 27Panjab University, Chandigarh, India
  • 28Delhi University, Delhi, India
  • 29Tata Institute of Fundamental Research, Mumbai, India
  • 30University College Dublin, Dublin, Ireland
  • 31Korea Detector Laboratory, Korea University, Seoul, Korea
  • 32CINVESTAV, Mexico City, Mexico
  • 33FOM-Institute NIKHEF and University of Amsterdam/NIKHEF, Amsterdam, The Netherlands
  • 34Radboud University Nijmegen/NIKHEF, Nijmegen, The Netherlands
  • 35Joint Institute for Nuclear Research, Dubna, Russia
  • 36Institute for Theoretical and Experimental Physics, Moscow, Russia
  • 37Moscow State University, Moscow, Russia
  • 38Institute for High Energy Physics, Protvino, Russia
  • 39Petersburg Nuclear Physics Institute, St. Petersburg, Russia
  • 40Stockholm University, Stockholm and Uppsala University, Uppsala, Sweden
  • 41Lancaster University, Lancaster LA1 4YB, United Kingdom
  • 42Imperial College London, London SW7 2AZ, United Kingdom
  • 43The University of Manchester, Manchester M13 9PL, United Kingdom
  • 44University of Arizona, Tucson, Arizona 85721, USA
  • 45University of California–Riverside, Riverside, California 92521, USA
  • 46Florida State University, Tallahassee, Florida 32306, USA
  • 47Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
  • 48University of Illinois at Chicago, Chicago, Illinois 60607, USA
  • 49Northern Illinois University, DeKalb, Illinois 60115, USA
  • 50Northwestern University, Evanston, Illinois 60208, USA
  • 51Indiana University, Bloomington, Indiana 47405, USA
  • 52Purdue University Calumet, Hammond, Indiana 46323, USA
  • 53University of Notre Dame, Notre Dame, Indiana 46556, USA
  • 54Iowa State University, Ames, Iowa 50011, USA
  • 55University of Kansas, Lawrence, Kansas 66045, USA
  • 56Kansas State University, Manhattan, Kansas 66506, USA
  • 57Louisiana Tech University, Ruston, Louisiana 71272, USA
  • 58Boston University, Boston, Massachusetts 02215, USA
  • 59Northeastern University, Boston, Massachusetts 02115, USA
  • 60University of Michigan, Ann Arbor, Michigan 48109, USA
  • 61Michigan State University, East Lansing, Michigan 48824, USA
  • 62University of Mississippi, University, Mississippi 38677, USA
  • 63University of Nebraska, Lincoln, Nebraska 68588, USA
  • 64Rutgers University, Piscataway, New Jersey 08855, USA
  • 65Princeton University, Princeton, New Jersey 08544, USA
  • 66State University of New York, Buffalo, New York 14260, USA
  • 67Columbia University, New York, New York 10027, USA
  • 68University of Rochester, Rochester, New York 14627, USA
  • 69State University of New York, Stony Brook, New York 11794, USA
  • 70Brookhaven National Laboratory, Upton, New York 11973, USA
  • 71Langston University, Langston, Oklahoma 73050, USA
  • 72University of Oklahoma, Norman, Oklahoma 73019, USA
  • 73Oklahoma State University, Stillwater, Oklahoma 74078, USA
  • 74Brown University, Providence, Rhode Island 02912, USA
  • 75University of Texas, Arlington, Texas 76019, USA
  • 76Southern Methodist University, Dallas, Texas 75275, USA
  • 77Rice University, Houston, Texas 77005, USA
  • 78University of Virginia, Charlottesville, Virginia 22901, USA
  • 79University of Washington, Seattle, Washington 98195, USA

  • *Visitor from Augustana College, Sioux Falls, SD, USA.
  • †Visitor from the University of Liverpool, Liverpool, United Kingdom.
  • ‡Visitor from SLAC, Menlo Park, CA, USA.
  • §Visitor from ICREA/IFAE, Barcelona, Spain.
  • ∥Visitor from Centro de Investigacion en Computacion—IPN, Mexico City, Mexico.
  • Visitor from ECFM, Universidad Autonoma de Sinaloa, Culiacán, Mexico.
  • **Universität Bern, Bern, Switzerland.
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Phys. Rev. D 83, 052008 – Published 23 March, 2011

DOI: https://doi.org/10.1103/PhysRevD.83.052008

Abstract

Samples of inclusive γ+2 jet and γ+3 jet events collected by the D0 experiment with an integrated luminosity of about 1  fb−1 in pp¯ collisions at s=1.96  TeV are used to measure cross sections as a function of the angle in the plane transverse to the beam direction between the transverse momentum (pT) of the γ+leading jet system (jets are ordered in pT) and pT of the other jet for γ+2 jet, or pT sum of the two other jets for γ+3 jet events. The results are compared to different models of multiple parton interactions (MPI) in the pythia and sherpa Monte Carlo (MC) generators. The data indicate a contribution from events with double parton (DP) interactions and are well-described by predictions provided by the pythia MPI models with pT-ordered showers and by sherpa with the default MPI model. The γ+2 jet data are also used to determine the fraction of events with DP interactions as a function of the azimuthal angle and as a function of the second jet pT.

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Phys. Rev. D 83, 052008– Published 23 March, 2011
  • Received 10 January 2011
Article part of CHORUS

© 2011 American Physical Society

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