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Measurement of the $γ^{} γ^{} \to η'$ transition form factor

J. P. Lees¹, V. Poireau¹, V. Tisserand¹, E. Grauges², A. Palano³, G. Eigen⁴, D. N. Brown⁵, Yu. G. Kolomensky⁵, M. Fritsch⁶ et al. (BABAR Collaboration)

M. Fritsch⁶, H. Koch⁶, T. Schroeder⁶, C. Hearty^7a,7b, T. S. Mattison^7b, J. A. McKenna^7b, R. Y. So^7b, V. E. Blinov^8a,8b,8c, A. R. Buzykaev^8a, V. P. Druzhinin^8a,8b, V. B. Golubev^8a,8b, E. A. Kozyrev^8a,8b, E. A. Kravchenko^8a,8b, A. P. Onuchin^8a,8b,8c, S. I. Serednyakov^8a,8b, Yu. I. Skovpen^8a,8b, E. P. Solodov^8a,8b, K. Yu. Todyshev^8a,8b, A. J. Lankford⁹, J. W. Gary¹⁰, O. Long¹⁰, A. M. Eisner¹¹, W. S. Lockman¹¹, W. Panduro Vazquez¹¹, D. S. Chao¹², C. H. Cheng¹², B. Echenard¹², K. T. Flood¹², D. G. Hitlin¹², J. Kim¹², Y. Li¹², T. S. Miyashita¹², P. Ongmongkolkul¹², F. C. Porter¹², M. Röhrken¹², Z. Huard¹³, B. T. Meadows¹³, B. G. Pushpawela¹³, M. D. Sokoloff¹³, L. Sun^13,†, J. G. Smith¹⁴, S. R. Wagner¹⁴, D. Bernard¹⁵, M. Verderi¹⁵, D. Bettoni^16a, C. Bozzi^16a, R. Calabrese^16a,16b, G. Cibinetto^16a,16b, E. Fioravanti^16a,16b, I. Garzia^16a,16b, E. Luppi^16a,16b, V. Santoro^16a, A. Calcaterra¹⁷, R. de Sangro¹⁷, G. Finocchiaro¹⁷, S. Martellotti¹⁷, P. Patteri¹⁷, I. M. Peruzzi¹⁷, M. Piccolo¹⁷, M. Rotondo¹⁷, A. Zallo¹⁷, S. Passaggio¹⁸, C. Patrignani^18,‡, H. M. Lacker¹⁹, B. Bhuyan²⁰, U. Mallik²¹, C. Chen²², J. Cochran²², S. Prell²², A. V. Gritsan²³, N. Arnaud²⁴, M. Davier²⁴, F. Le Diberder²⁴, A. M. Lutz²⁴, G. Wormser²⁴, D. J. Lange²⁵, D. M. Wright²⁵, J. P. Coleman²⁶, E. Gabathuler^26,*, D. E. Hutchcroft²⁶, D. J. Payne²⁶, C. Touramanis²⁶, A. J. Bevan²⁷, F. Di Lodovico²⁷, R. Sacco²⁷, G. Cowan²⁸, Sw. Banerjee²⁹, D. N. Brown²⁹, C. L. Davis²⁹, A. G. Denig³⁰, W. Gradl³⁰, K. Griessinger³⁰, A. Hafner³⁰, K. R. Schubert³⁰, R. J. Barlow^31,§, G. D. Lafferty³¹, R. Cenci³², A. Jawahery³², D. A. Roberts³², R. Cowan³³, S. H. Robertson^34a,34b, R. M. Seddon^34b, B. Dey^35a, N. Neri^35a, F. Palombo^35a,35b, R. Cheaib³⁶, L. Cremaldi³⁶, R. Godang^36,¶, D. J. Summers³⁶, P. Taras³⁷, G. De Nardo³⁸, C. Sciacca³⁸, G. Raven³⁹, C. P. Jessop⁴⁰, J. M. LoSecco⁴⁰, K. Honscheid⁴¹, R. Kass⁴¹, A. Gaz^42a, M. Margoni^42a,42b, M. Posocco^42a, G. Simi^42a,42b, F. Simonetto^42a,42b, R. Stroili^42a,42b, S. Akar⁴³, E. Ben-Haim⁴³, M. Bomben⁴³, G. R. Bonneaud⁴³, G. Calderini⁴³, J. Chauveau⁴³, G. Marchiori⁴³, J. Ocariz⁴³, M. Biasini^44a,44b, E. Manoni^44a, A. Rossi^44a, G. Batignani^45a,45b, S. Bettarini^45a,45b, M. Carpinelli^45a,45b,**, G. Casarosa^45a,45b, M. Chrzaszcz^45a, F. Forti^45a,45b, M. A. Giorgi^45a,45b, A. Lusiani^45a,45c, B. Oberhof^45a,45b, E. Paoloni^45a,45b, M. Rama^45a, G. Rizzo^45a,45b, J. J. Walsh^45a, L. Zani^45a,45b, A. J. S. Smith⁴⁶, F. Anulli^47a, R. Faccini^47a,47b, F. Ferrarotto^47a, F. Ferroni^47a,47b, A. Pilloni^47a,47b, G. Piredda^47a,*, C. Bünger⁴⁸, S. Dittrich⁴⁸, O. Grünberg⁴⁸, M. Heß⁴⁸, T. Leddig⁴⁸, C. Voß⁴⁸, R. Waldi⁴⁸, T. Adye⁴⁹, F. F. Wilson⁴⁹, S. Emery⁵⁰, G. Vasseur⁵⁰, D. Aston⁵¹, C. Cartaro⁵¹, M. R. Convery⁵¹, J. Dorfan⁵¹, W. Dunwoodie⁵¹, M. Ebert⁵¹, R. C. Field⁵¹, B. G. Fulsom⁵¹, M. T. Graham⁵¹, C. Hast⁵¹, W. R. Innes^51,*, P. Kim⁵¹, D. W. G. S. Leith⁵¹, S. Luitz⁵¹, D. B. MacFarlane⁵¹, D. R. Muller⁵¹, H. Neal⁵¹, B. N. Ratcliff⁵¹, A. Roodman⁵¹, M. K. Sullivan⁵¹, J. Va’vra⁵¹, W. J. Wisniewski⁵¹, M. V. Purohit⁵², J. R. Wilson⁵², A. Randle-Conde⁵³, S. J. Sekula⁵³, H. Ahmed⁵⁴, M. Bellis⁵⁵, P. R. Burchat⁵⁵, E. M. T. Puccio⁵⁵, M. S. Alam⁵⁶, J. A. Ernst⁵⁶, R. Gorodeisky⁵⁷, N. Guttman⁵⁷, D. R. Peimer⁵⁷, A. Soffer⁵⁷, S. M. Spanier⁵⁸, J. L. Ritchie⁵⁹, R. F. Schwitters⁵⁹, J. M. Izen⁶⁰, X. C. Lou⁶⁰, F. Bianchi^61a,61b, F. De Mori^61a,61b, A. Filippi^61a, D. Gamba^61a,61b, L. Lanceri⁶², L. Vitale⁶², F. Martinez-Vidal⁶³, A. Oyanguren⁶³, J. Albert^64b, A. Beaulieu^64b, F. U. Bernlochner^64b, G. J. King^64b, R. Kowalewski^64b, T. Lueck^64b, I. M. Nugent^64b, J. M. Roney^64b, R. J. Sobie^64a,64b, N. Tasneem^64b, T. J. Gershon⁶⁵, P. F. Harrison⁶⁵, T. E. Latham⁶⁵, R. Prepost⁶⁶, and S. L. Wu⁶⁶ (BABAR Collaboration)

¹Laboratoire d’Annecy-le-Vieux de Physique des Particules (LAPP), Université de Savoie, CNRS/IN2P3, F-74941 Annecy-Le-Vieux, France
²Universitat de Barcelona, Facultat de Fisica, Departament ECM, E-08028 Barcelona, Spain
³INFN Sezione di Bari and Dipartimento di Fisica, Università di Bari, I-70126 Bari, Italy
⁴University of Bergen, Institute of Physics, N-5007 Bergen, Norway
⁵Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720, USA
⁶Ruhr Universität Bochum, Institut für Experimentalphysik 1, D-44780 Bochum, Germany
^7aInstitute of Particle Physics, Vancouver, V6T 1Z1 British Columbia, Canada
^7bUniversity of British Columbia, Vancouver, V6T 1Z1 British Columbia, Canada
^8aBudker Institute of Nuclear Physics SB RAS, Novosibirsk 630090, Russia
^8bRussia Novosibirsk State University, Novosibirsk 630090, Russia
^8cNovosibirsk State Technical University, Novosibirsk 630092, Russia
⁹University of California at Irvine, Irvine, California 92697, USA
¹⁰University of California at Riverside, Riverside, California 92521, USA
¹¹University of California at Santa Cruz, Institute for Particle Physics, Santa Cruz, California 95064, USA
¹²California Institute of Technology, Pasadena, California 91125, USA
¹³University of Cincinnati, Cincinnati, Ohio 45221, USA
¹⁴University of Colorado, Boulder, Colorado 80309, USA
¹⁵Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS/IN2P3, F-91128 Palaiseau, France
^16aINFN Sezione di Ferrara, I-44122 Ferrara, Italy
^16bDipartimento di Fisica e Scienze della Terra, Università di Ferrara, I-44122 Ferrara, Italy
¹⁷INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
¹⁸INFN Sezione di Genova, I-16146 Genova, Italy
¹⁹Humboldt-Universität zu Berlin, Institut für Physik, D-12489 Berlin, Germany
²⁰Indian Institute of Technology Guwahati, Guwahati, 781 039 Assam, India
²¹University of Iowa, Iowa City, Iowa 52242, USA
²²Iowa State University, Ames, Iowa 50011, USA
²³Johns Hopkins University, Baltimore, Maryland 21218, USA
²⁴Laboratoire de l’Accélérateur Linéaire, IN2P3/CNRS et Université Paris-Sud 11, Centre Scientifique d’Orsay, F-91898 Orsay Cedex, France
²⁵Lawrence Livermore National Laboratory, Livermore, California 94550, USA
²⁶University of Liverpool, Liverpool L69 7ZE, United Kingdom
²⁷Queen Mary, University of London, London E1 4NS, United Kingdom
²⁸University of London, Royal Holloway and Bedford New College, Egham, Surrey TW20 0EX, United Kingdom
²⁹University of Louisville, Louisville, Kentucky 40292, USA
³⁰Johannes Gutenberg-Universität Mainz, Institut für Kernphysik, D-55099 Mainz, Germany
³¹University of Manchester, Manchester M13 9PL, United Kingdom
³²University of Maryland, College Park, Maryland 20742, USA
³³Massachusetts Institute of Technology, Laboratory for Nuclear Science, Cambridge, Massachusetts 02139, USA
^34aInstitute of Particle Physics, Montréal, Québec H3A 2T8, Canada
^34bMcGill University, Montréal, Québec H3A 2T8, Canada
^35aINFN Sezione di Milano, I-20133 Milano, Italy
^35bDipartimento di Fisica, Università di Milano, I-20133 Milano, Italy
³⁶University of Mississippi, University, Mississippi 38677, USA
³⁷Université de Montréal, Physique des Particules, Montréal, H3C 3J7 Québec, Canada
³⁸INFN Sezione di Napoli and Dipartimento di Scienze Fisiche, Università di Napoli Federico II, I-80126 Napoli, Italy
³⁹NIKHEF, National Institute for Nuclear Physics and High Energy Physics, NL-1009 DB Amsterdam, Netherlands
⁴⁰University of Notre Dame, Notre Dame, Indiana 46556, USA
⁴¹Ohio State University, Columbus, Ohio 43210, USA
^42aINFN Sezione di Padova, I-35131 Padova, Italy
^42bDipartimento di Fisica, Università di Padova, I-35131 Padova, Italy
⁴³Laboratoire de Physique Nucléaire et de Hautes Energies, IN2P3/CNRS, Université Pierre et Marie Curie-Paris6, Université Denis Diderot-Paris7, F-75252 Paris, France
^44aINFN Sezione di Perugia, I-06123 Perugia, Italy
^44bDipartimento di Fisica, Università di Perugia, I-06123 Perugia, Italy
^45aINFN Sezione di Pisa, I-56127 Pisa, Italy
^45bDipartimento di Fisica, Università di Pisa, I-56127 Pisa, Italy
^45cScuola Normale Superiore di Pisa, I-56127 Pisa, Italy
⁴⁶Princeton University, Princeton, New Jersey 08544, USA
^47aINFN Sezione di Roma, I-00185 Roma, Italy
^47bDipartimento di Fisica, Università di Roma La Sapienza, I-00185 Roma, Italy
⁴⁸Universität Rostock, D-18051 Rostock, Germany
⁴⁹Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, United Kingdom
⁵⁰CEA, Irfu, SPP, Centre de Saclay, F-91191 Gif-sur-Yvette, France
⁵¹SLAC National Accelerator Laboratory, Stanford, California 94309 USA
⁵²University of South Carolina, Columbia, South Carolina 29208, USA
⁵³Southern Methodist University, Dallas, Texas 75275, USA
⁵⁴St. Francis Xavier University, Antigonish, Nova Scotia B2G 2W5, Canada
⁵⁵Stanford University, Stanford, California 94305, USA
⁵⁶State University of New York, Albany, New York 12222, USA
⁵⁷Tel Aviv University, School of Physics and Astronomy, Tel Aviv 69978, Israel
⁵⁸University of Tennessee, Knoxville, Tennessee 37996, USA
⁵⁹University of Texas at Austin, Austin, Texas 78712, USA
⁶⁰University of Texas at Dallas, Richardson, Texas 75083, USA
^61aINFN Sezione di Torino, I-10125 Torino, Italy
^61bDipartimento di Fisica, Università di Torino, I-10125 Torino, Italy
⁶²INFN Sezione di Trieste and Dipartimento di Fisica, Università di Trieste, I-34127 Trieste, Italy
⁶³IFIC, Universitat de Valencia-CSIC, E-46071 Valencia, Spain
^64aInstitute of Particle Physics, Victoria, British Columbia V8W 3P6, Canada
^64bUniversity of Victoria, Victoria, British Columbia V8W 3P6, Canada
⁶⁵Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom
⁶⁶University of Wisconsin, Madison, Wisconsin 53706, USA

^*Deceased.
^†Present address: Wuhan University, Wuhan 430072, China.
^‡Present address: Università di Bologna and INFN Sezione di Bologna, I-47921 Rimini, Italy.
^§Present address: University of Huddersfield, Huddersfield HD1 3DH, United Kingdom.
^¶Present address: University of South Alabama, Mobile, Alabama 36688, USA.
^**Also at Università di Sassari, I-07100 Sassari, Italy.

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Phys. Rev. D 98, 112002 – Published 5 December, 2018

DOI: https://doi.org/10.1103/PhysRevD.98.112002

Abstract

We study the process $e^{+} e^{-} \to e^{+} e^{-} η^{'}$ in the double-tag mode and measure for the first time the $γ^{⋆} γ^{⋆} \to η^{'}$ transition form factor $F_{η^{'}} (Q_{1}^{2}, Q_{2}^{2})$ in the momentum-transfer range $2 < Q_{1}^{2}$ , $Q_{2}^{2} < 60 {GeV}^{2}$ . The analysis is based on a data sample corresponding to an integrated luminosity of around $469 {fb}^{- 1}$ collected at the PEP-II $e^{+} e^{-}$ collider with the BABAR detector at center-of-mass energies near 10.6 GeV.

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References (26)

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Phys. Rev. D 98, 112002– Published 5 December, 2018

Vol. 98, Iss. 11 — 1 December 2018

Received 26 August 2018

DOI: https://doi.org/10.1103/PhysRevD.98.112002

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.

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Physical Review D

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Measurement of the $γ^{} γ^{} \to η'$ transition form factor

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Measurement of the γ*γ*→η′ transition form factor

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Measurement of the $γ^{} γ^{} \to η'$ transition form factor