Bose–Einstein correlations in hadron-pairs from lepto-production on nuclei ranging from hydrogen to xenon

Airapetian, A. (II. Physikalisches Institut, Justus-Liebig Universität Gießen, 35392, Gießen, Germany) (Randall Laboratory of Physics, University of Michigan, 48109-1040, Ann Arbor, MI, USA) ; Akopov, N. (Yerevan Physics Institute, 375036, Yerevan, Armenia) ; Akopov, Z. (DESY, 22603, Hamburg, Germany) ; Aschenauer, E. C. (DESY, 15738, Zeuthen, Germany) ; Augustyniak, W. (National Centre for Nuclear Research, 00-689, Warsaw, Poland) ; Avakian, R. (Yerevan Physics Institute, 375036, Yerevan, Armenia) ; Avetissian, A. (Yerevan Physics Institute, 375036, Yerevan, Armenia) ; Avetisyan, E. (DESY, 22603, Hamburg, Germany) ; Belostotski, S. (B.P. Konstantinov Petersburg Nuclear Physics Institute, 188300, Gatchina, Leningrad Region, Russia) ; Bianchi, N. (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044, Frascati, Italy) ; Blok, H. P. (National Institute for Subatomic Physics (Nikhef), 1009 DB, Amsterdam, The Netherlands) (Department of Physics and Astronomy, VU University, 1081 HV, Amsterdam, The Netherlands) ; Borissov, A. (DESY, 22603, Hamburg, Germany) ; Bryzgalov, V. (Institute for High Energy Physics, 142281, Protvino, Moscow Region, Russia) ; Burns, J. (SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, UK) ; Capiluppi, M. (Sezione di Ferrara, Istituto Nazionale di Fisica Nucleare, 44122, Ferrara, Italy) (Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, 44122, Ferrara, Italy) ; Capitani, G. P. (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044, Frascati, Italy) ; Cisbani, E. (Sezione di Roma, Gruppo Collegato Sanità, Istituto Nazionale di Fisica Nucleare, 00161, Rome, Italy) (Istituto Superiore di Sanità, 00161, Rome, Italy) ; Ciullo, G. (Sezione di Ferrara, Istituto Nazionale di Fisica Nucleare, 44122, Ferrara, Italy) (Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, 44122, Ferrara, Italy) ; Contalbrigo, M. (Sezione di Ferrara, Istituto Nazionale di Fisica Nucleare, 44122, Ferrara, Italy) ; Dalpiaz, P. F. (Sezione di Ferrara, Istituto Nazionale di Fisica Nucleare, 44122, Ferrara, Italy) (Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, 44122, Ferrara, Italy) ; Deconinck, W. (DESY, 22603, Hamburg, Germany) ; De Leo, R. (Sezione di Bari, Istituto Nazionale di Fisica Nucleare, 70124, Bari, Italy) ; De Sanctis, E. (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044, Frascati, Italy) ; Diefenthaler, M. (Physikalisches Institut, Universität Erlangen-Nürnberg, 91058, Erlangen, Germany) (Department of Physics, University of Illinois, 61801-3080, Urbana, IL, USA) ; Di Nezza, P. (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044, Frascati, Italy) ; Düren, M. (II. Physikalisches Institut, Justus-Liebig Universität Gießen, 35392, Gießen, Germany) ; Elbakian, G. (Yerevan Physics Institute, 375036, Yerevan, Armenia) ; Ellinghaus, F. (Nuclear Physics Laboratory, University of Colorado, 80309-0390, Boulder, CO, USA) ; Etzelmüller, E. (II. Physikalisches Institut, Justus-Liebig Universität Gießen, 35392, Gießen, Germany) ; Fabbri, R. (DESY, 15738, Zeuthen, Germany) ; Fantoni, A. (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044, Frascati, Italy) ; Felawka, L. (TRIUMF, V6T 2A3, Vancouver, BC, Canada) ; Frullani, S. (Sezione di Roma, Gruppo Collegato Sanità, Istituto Nazionale di Fisica Nucleare, 00161, Rome, Italy) (Istituto Superiore di Sanità, 00161, Rome, Italy) ; Gapienko, G. (Institute for High Energy Physics, 142281, Protvino, Moscow Region, Russia) ; Gapienko, V. (Institute for High Energy Physics, 142281, Protvino, Moscow Region, Russia) ; Garay García, J. (Department of Theoretical Physics, University of the Basque Country UPV/EHU, 48080, Bilbao, Spain) (DESY, 22603, Hamburg, Germany) ; Garibaldi, F. (Sezione di Roma, Gruppo Collegato Sanità, Istituto Nazionale di Fisica Nucleare, 00161, Rome, Italy) (Istituto Superiore di Sanità, 00161, Rome, Italy) ; Gavrilov, G. (DESY, 22603, Hamburg, Germany) (B.P. Konstantinov Petersburg Nuclear Physics Institute, 188300, Gatchina, Leningrad Region, Russia) (TRIUMF, V6T 2A3, Vancouver, BC, Canada) ; Gharibyan, V. (Yerevan Physics Institute, 375036, Yerevan, Armenia) ; Giordano, F. (Sezione di Ferrara, Istituto Nazionale di Fisica Nucleare, 44122, Ferrara, Italy) (Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, 44122, Ferrara, Italy) (Department of Physics, University of Illinois, 61801-3080, Urbana, IL, USA) ; Gliske, S. (Randall Laboratory of Physics, University of Michigan, 48109-1040, Ann Arbor, MI, USA) ; Hartig, M. (DESY, 22603, Hamburg, Germany) ; Hasch, D. (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044, Frascati, Italy) ; Holler, Y. (DESY, 22603, Hamburg, Germany) ; Hristova, I. (DESY, 15738, Zeuthen, Germany) ; Imazu, Y. (Department of Physics, Tokyo Institute of Technology, 152, Tokyo, Japan) ; Ivanilov, A. (Institute for High Energy Physics, 142281, Protvino, Moscow Region, Russia) ; Jackson, H. E. (Physics Division, Argonne National Laboratory, 60439-4843, Argonne, IL, USA) ; Joosten, S. (Department of Physics and Astronomy, Ghent University, 9000, Ghent, Belgium) ; Kaiser, R. (SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, UK) ; Karyan, G. (Yerevan Physics Institute, 375036, Yerevan, Armenia) ; Keri, T. (II. Physikalisches Institut, Justus-Liebig Universität Gießen, 35392, Gießen, Germany) ; Kinney, E. (Nuclear Physics Laboratory, University of Colorado, 80309-0390, Boulder, CO, USA) ; Kisselev, A. (B.P. Konstantinov Petersburg Nuclear Physics Institute, 188300, Gatchina, Leningrad Region, Russia) ; Korotkov, V. (Institute for High Energy Physics, 142281, Protvino, Moscow Region, Russia) ; Kozlov, V. (Lebedev Physical Institute, 117924, Moscow, Russia) ; Kravchenko, P. (Physikalisches Institut, Universität Erlangen-Nürnberg, 91058, Erlangen, Germany) (B.P. Konstantinov Petersburg Nuclear Physics Institute, 188300, Gatchina, Leningrad Region, Russia) ; Krivokhijine, V. G. (Joint Institute for Nuclear Research, 141980, Dubna, Russia) ; Lagamba, L. (Sezione di Bari, Istituto Nazionale di Fisica Nucleare, 70124, Bari, Italy) ; Lapikás, L. (National Institute for Subatomic Physics (Nikhef), 1009 DB, Amsterdam, The Netherlands) ; Lehmann, I. (SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, UK) ; Lenisa, P. (Sezione di Ferrara, Istituto Nazionale di Fisica Nucleare, 44122, Ferrara, Italy) (Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, 44122, Ferrara, Italy) ; López Ruiz, A. (Department of Physics and Astronomy, Ghent University, 9000, Ghent, Belgium) ; Lorenzon, W. (Randall Laboratory of Physics, University of Michigan, 48109-1040, Ann Arbor, MI, USA) ; Lu, X.-G. (DESY, 22603, Hamburg, Germany) ; Ma, B.-Q. (School of Physics, Peking University, 100871, Beijing, China) ; Mahon, D. (SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, UK) ; Makins, N. C. R. (Department of Physics, University of Illinois, 61801-3080, Urbana, IL, USA) ; Mao, Y. (School of Physics, Peking University, 100871, Beijing, China) ; Marianski, B. (National Centre for Nuclear Research, 00-689, Warsaw, Poland) ; Martinez de la Ossa, A. (DESY, 22603, Hamburg, Germany) ; Marukyan, H. (Yerevan Physics Institute, 375036, Yerevan, Armenia) ; Miyachi, Y. (Department of Physics, Tokyo Institute of Technology, 152, Tokyo, Japan) ; Movsisyan, A. (Sezione di Ferrara, Istituto Nazionale di Fisica Nucleare, 44122, Ferrara, Italy) ; Murray, M. (SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, UK) ; Mussgiller, A. (DESY, 22603, Hamburg, Germany) (Physikalisches Institut, Universität Erlangen-Nürnberg, 91058, Erlangen, Germany) ; Nappi, E. (Sezione di Bari, Istituto Nazionale di Fisica Nucleare, 70124, Bari, Italy) ; Naryshkin, Y. (B.P. Konstantinov Petersburg Nuclear Physics Institute, 188300, Gatchina, Leningrad Region, Russia) ; Nass, A. (Physikalisches Institut, Universität Erlangen-Nürnberg, 91058, Erlangen, Germany) ; Negodaev, M. (DESY, 15738, Zeuthen, Germany) ; Nowak, W.-D. (DESY, 15738, Zeuthen, Germany) ; Pappalardo, L. L. (Sezione di Ferrara, Istituto Nazionale di Fisica Nucleare, 44122, Ferrara, Italy) (Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, 44122, Ferrara, Italy) ; Perez-Benito, R. (II. Physikalisches Institut, Justus-Liebig Universität Gießen, 35392, Gießen, Germany) ; Petrosyan, A. (Yerevan Physics Institute, 375036, Yerevan, Armenia) ; Reimer, P. E. (Physics Division, Argonne National Laboratory, 60439-4843, Argonne, IL, USA) ; Reolon, A. R. (Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044, Frascati, Italy) ; Riedl, C. (DESY, 15738, Zeuthen, Germany) (Department of Physics, University of Illinois, 61801-3080, Urbana, IL, USA) ; Rith, K. (Physikalisches Institut, Universität Erlangen-Nürnberg, 91058, Erlangen, Germany) ; Rosner, G. (SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, UK) ; Rostomyan, A. (DESY, 22603, Hamburg, Germany) ; Rubin, J. (Department of Physics, University of Illinois, 61801-3080, Urbana, IL, USA) (Randall Laboratory of Physics, University of Michigan, 48109-1040, Ann Arbor, MI, USA) ; Ryckbosch, D. (Department of Physics and Astronomy, Ghent University, 9000, Ghent, Belgium) ; Salomatin, Y. (Institute for High Energy Physics, 142281, Protvino, Moscow Region, Russia) ; Schäfer, A. (Institut für Theoretische Physik, Universität Regensburg, 93040, Regensburg, Germany) ; Schnell, G. (Department of Theoretical Physics, University of the Basque Country UPV/EHU, 48080, Bilbao, Spain) (IKERBASQUE, Basque Foundation for Science, 48013, Bilbao, Spain) (Department of Physics and Astronomy, Ghent University, 9000, Ghent, Belgium) ; Seitz, B. (SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, UK) ; Shibata, T.-A. (Department of Physics, Tokyo Institute of Technology, 152, Tokyo, Japan) ; Shutov, V. (Joint Institute for Nuclear Research, 141980, Dubna, Russia) ; Stahl, M. (II. Physikalisches Institut, Justus-Liebig Universität Gießen, 35392, Gießen, Germany) ; Stancari, M. (Sezione di Ferrara, Istituto Nazionale di Fisica Nucleare, 44122, Ferrara, Italy) (Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, 44122, Ferrara, Italy) ; Statera, M. (Sezione di Ferrara, Istituto Nazionale di Fisica Nucleare, 44122, Ferrara, Italy) (Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, 44122, Ferrara, Italy) ; Steijger, J. J. M. (National Institute for Subatomic Physics (Nikhef), 1009 DB, Amsterdam, The Netherlands) ; Taroian, S. (Yerevan Physics Institute, 375036, Yerevan, Armenia) ; Terkulov, A. (Lebedev Physical Institute, 117924, Moscow, Russia) ; Truty, R. (Department of Physics, University of Illinois, 61801-3080, Urbana, IL, USA) ; Trzcinski, A. (National Centre for Nuclear Research, 00-689, Warsaw, Poland) ; Tytgat, M. (Department of Physics and Astronomy, Ghent University, 9000, Ghent, Belgium) ; Van Haarlem, Y. (Department of Physics and Astronomy, Ghent University, 9000, Ghent, Belgium) ; Van Hulse, C. (Department of Theoretical Physics, University of the Basque Country UPV/EHU, 48080, Bilbao, Spain) (Department of Physics and Astronomy, Ghent University, 9000, Ghent, Belgium) ; Veretennikov, D. (B.P. Konstantinov Petersburg Nuclear Physics Institute, 188300, Gatchina, Leningrad Region, Russia) ; Vikhrov, V. (B.P. Konstantinov Petersburg Nuclear Physics Institute, 188300, Gatchina, Leningrad Region, Russia) ; Vilardi, I. (Sezione di Bari, Istituto Nazionale di Fisica Nucleare, 70124, Bari, Italy) ; Wang, S. (School of Physics, Peking University, 100871, Beijing, China) ; Yaschenko, S. (DESY, 22603, Hamburg, Germany) (Physikalisches Institut, Universität Erlangen-Nürnberg, 91058, Erlangen, Germany) ; Ye, Z. (DESY, 22603, Hamburg, Germany) ; Yen, S. (TRIUMF, V6T 2A3, Vancouver, BC, Canada) ; Zihlmann, B. (DESY, 22603, Hamburg, Germany) ; Zupranski, P. (National Centre for Nuclear Research, 00-689, Warsaw, Poland)

10 August 2015

Abstract: Bose–Einstein correlations of like-sign charged hadrons produced in deep-inelastic electron and positron scattering are studied in the HERMES experiment using nuclear targets of 1 H, 2 H, 3 He, 4 He, N, Ne, Kr, and Xe. A Gaussian approach is used to parametrize a two-particle correlation function determined from events with at least two charged hadrons of the same sign charge. This correlation function is compared to two different empirical distributions that do not include the Bose–Einstein correlations. One distribution is derived from unlike-sign hadron pairs, and the second is derived from mixing like-sign pairs from different events. The extraction procedure used simulations incorporating the experimental setup in order to correct the results for spectrometer acceptance effects, and was tested using the distribution of unlike-sign hadron pairs. Clear signals of Bose–Einstein correlations for all target nuclei without a significant variation with the nuclear target mass are found. Also, no evidence for a dependence on the invariant mass W of the photon-nucleon system is found when the results are compared to those of previous experiments.


Published in: EPJC 75 (2015) 361
Published by: Springer/Società Italiana di Fisica
DOI: 10.1140/epjc/s10052-015-3566-7
License: CC-BY-3.0



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