Hard exclusive pion electroproduction at backward angles with CLAS
We report on the first measurement of cross sections for exclusive deeply virtual pion electroproduction off the proton, ep→e′nπ+, above the resonance region at backward pion center-of-mass angles. The φπ⁎-dependent cross sections were measured, from which we extracted three combinations of structur...
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2018-05-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269318302156 |
| _version_ | 1819298356592115712 |
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| author | K. Park M. Guidal R.W. Gothe B. Pire K. Semenov-Tian-Shansky J.-M. Laget K.P. Adhikari S. Adhikari Z. Akbar H. Avakian J. Ball I. Balossino N.A. Baltzell L. Barion M. Battaglieri I. Bedlinskiy A.S. Biselli W.J. Briscoe W.K. Brooks V.D. Burkert F.T. Cao D.S. Carman A. Celentano G. Charles T. Chetry G. Ciullo L. Clark P.L. Cole M. Contalbrigo V. Crede A. D'Angelo N. Dashyan R. De Vita E. De Sanctis M. Defurne A. Deur C. Djalali R. Dupre H. Egiyan A. El Alaoui L. El Fassi L. Elouadrhiri P. Eugenio G. Fedotov R. Fersch A. Filippi M. Garçon Y. Ghandilyan G.P. Gilfoyle F.X. Girod E. Golovatch K.A. Griffioen L. Guo K. Hafidi H. Hakobyan C. Hanretty N. Harrison M. Hattawy D. Heddle K. Hicks M. Holtrop C.E. Hyde Y. Ilieva D.G. Ireland B.S. Ishkhanov E.L. Isupov D. Jenkins S. Johnston K. Joo M.L. Kabir D. Keller G. Khachatryan M. Khachatryan M. Khandaker W. Kim F.J. Klein V. Kubarovsky S.E. Kuhn L. Lanza K. Livingston I.J.D. MacGregor N. Markov B. McKinnon M. Mirazita V. Mokeev R.A. Montgomery C. Munoz Camacho P. Nadel-Turonski S. Niccolai G. Niculescu M. Osipenko M. Paolone R. Paremuzyan E. Pasyuk W. Phelps O. Pogorelko J. Poudel J.W. Price Y. Prok D. Protopopescu M. Ripani A. Rizzo P. Rossi F. Sabatié C. Salgado R.A. Schumacher Y. Sharabian Iu. Skorodumina G.D. Smith D. Sokhan N. Sparveris S. Stepanyan I.I. Strakovsky S. Strauch M. Taiuti J.A. Tan M. Ungaro H. Voskanyan E. Voutier X. Wei N. Zachariou J. Zhang |
| author_facet | K. Park M. Guidal R.W. Gothe B. Pire K. Semenov-Tian-Shansky J.-M. Laget K.P. Adhikari S. Adhikari Z. Akbar H. Avakian J. Ball I. Balossino N.A. Baltzell L. Barion M. Battaglieri I. Bedlinskiy A.S. Biselli W.J. Briscoe W.K. Brooks V.D. Burkert F.T. Cao D.S. Carman A. Celentano G. Charles T. Chetry G. Ciullo L. Clark P.L. Cole M. Contalbrigo V. Crede A. D'Angelo N. Dashyan R. De Vita E. De Sanctis M. Defurne A. Deur C. Djalali R. Dupre H. Egiyan A. El Alaoui L. El Fassi L. Elouadrhiri P. Eugenio G. Fedotov R. Fersch A. Filippi M. Garçon Y. Ghandilyan G.P. Gilfoyle F.X. Girod E. Golovatch K.A. Griffioen L. Guo K. Hafidi H. Hakobyan C. Hanretty N. Harrison M. Hattawy D. Heddle K. Hicks M. Holtrop C.E. Hyde Y. Ilieva D.G. Ireland B.S. Ishkhanov E.L. Isupov D. Jenkins S. Johnston K. Joo M.L. Kabir D. Keller G. Khachatryan M. Khachatryan M. Khandaker W. Kim F.J. Klein V. Kubarovsky S.E. Kuhn L. Lanza K. Livingston I.J.D. MacGregor N. Markov B. McKinnon M. Mirazita V. Mokeev R.A. Montgomery C. Munoz Camacho P. Nadel-Turonski S. Niccolai G. Niculescu M. Osipenko M. Paolone R. Paremuzyan E. Pasyuk W. Phelps O. Pogorelko J. Poudel J.W. Price Y. Prok D. Protopopescu M. Ripani A. Rizzo P. Rossi F. Sabatié C. Salgado R.A. Schumacher Y. Sharabian Iu. Skorodumina G.D. Smith D. Sokhan N. Sparveris S. Stepanyan I.I. Strakovsky S. Strauch M. Taiuti J.A. Tan M. Ungaro H. Voskanyan E. Voutier X. Wei N. Zachariou J. Zhang |
| author_sort | K. Park |
| collection | DOAJ |
| description | We report on the first measurement of cross sections for exclusive deeply virtual pion electroproduction off the proton, ep→e′nπ+, above the resonance region at backward pion center-of-mass angles. The φπ⁎-dependent cross sections were measured, from which we extracted three combinations of structure functions of the proton. Our results are compatible with calculations based on nucleon-to-pion transition distribution amplitudes (TDAs). These non-perturbative objects are defined as matrix elements of three-quark-light-cone-operators and characterize partonic correlations with a particular emphasis on baryon charge distribution inside a nucleon. Keywords: TDA, Exclusive single pion, Eletroproduction, CLAS |
| first_indexed | 2024-12-24T05:28:36Z |
| format | Article |
| id | doaj.art-dc96f636e42644b9a15c796b3f2e76af |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-24T05:28:36Z |
| publishDate | 2018-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-dc96f636e42644b9a15c796b3f2e76af2022-12-21T17:13:14ZengElsevierPhysics Letters B0370-26932018-05-01780340345Hard exclusive pion electroproduction at backward angles with CLASK. Park0M. Guidal1R.W. Gothe2B. Pire3K. Semenov-Tian-Shansky4J.-M. Laget5K.P. Adhikari6S. Adhikari7Z. Akbar8H. Avakian9J. Ball10I. Balossino11N.A. Baltzell12L. Barion13M. Battaglieri14I. Bedlinskiy15A.S. Biselli16W.J. Briscoe17W.K. Brooks18V.D. Burkert19F.T. Cao20D.S. Carman21A. Celentano22G. Charles23T. Chetry24G. Ciullo25L. Clark26P.L. Cole27M. Contalbrigo28V. Crede29A. D'Angelo30N. Dashyan31R. De Vita32E. De Sanctis33M. Defurne34A. Deur35C. Djalali36R. Dupre37H. Egiyan38A. El Alaoui39L. El Fassi40L. Elouadrhiri41P. Eugenio42G. Fedotov43R. Fersch44A. Filippi45M. Garçon46Y. Ghandilyan47G.P. Gilfoyle48F.X. Girod49E. Golovatch50K.A. Griffioen51L. Guo52K. Hafidi53H. Hakobyan54C. Hanretty55N. Harrison56M. Hattawy57D. Heddle58K. Hicks59M. Holtrop60C.E. Hyde61Y. Ilieva62D.G. Ireland63B.S. Ishkhanov64E.L. Isupov65D. Jenkins66S. Johnston67K. Joo68M.L. Kabir69D. Keller70G. Khachatryan71M. Khachatryan72M. Khandaker73W. Kim74F.J. Klein75V. Kubarovsky76S.E. Kuhn77L. Lanza78K. Livingston79I.J.D. MacGregor80N. Markov81B. McKinnon82M. Mirazita83V. Mokeev84R.A. Montgomery85C. Munoz Camacho86P. Nadel-Turonski87S. Niccolai88G. Niculescu89M. Osipenko90M. Paolone91R. Paremuzyan92E. Pasyuk93W. Phelps94O. Pogorelko95J. Poudel96J.W. Price97Y. Prok98D. Protopopescu99M. Ripani100A. Rizzo101P. Rossi102F. Sabatié103C. Salgado104R.A. Schumacher105Y. Sharabian106Iu. Skorodumina107G.D. Smith108D. Sokhan109N. Sparveris110S. Stepanyan111I.I. Strakovsky112S. Strauch113M. Taiuti114J.A. Tan115M. Ungaro116H. Voskanyan117E. Voutier118X. Wei119N. Zachariou120J. Zhang121Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; Corresponding author.Institut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, FranceUniversity of South Carolina, Columbia, SC 29208, USACentre de physique théorique, École Polytechnique, CNRS, F-91128 Palaiseau, FranceNational Research Centre Kurchatov Institute, Petersburg Nuclear Physics Institute, RU-188300 Gatchina, RussiaThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAMississippi State University, Mississippi State, MS 39762-5167, USAFlorida International University, Miami, FL 33199, USAFlorida State University, Tallahassee, FL 32306, USAThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceINFN, Sezione di Ferrara, 44100 Ferrara, ItalyThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAINFN, Sezione di Ferrara, 44100 Ferrara, ItalyINFN, Sezione di Genova, 16146 Genova, ItalyInstitute of Theoretical and Experimental Physics, Moscow, 117259, RussiaFairfield University, Fairfield CT 06824, USA; Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USAThe George Washington University, Washington, DC 20052, USAUniversidad Técnica Federico Santa María, Casilla 110-V Valparaíso, ChileThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAUniversity of Connecticut, Storrs, CT 06269, USAThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAINFN, Sezione di Genova, 16146 Genova, ItalyOld Dominion University, Norfolk, VA 23529, USAOhio University, Athens, OH 45701, USAINFN, Sezione di Ferrara, 44100 Ferrara, Italy; Universita' di Ferrara, 44121 Ferrara, ItalyUniversity of Glasgow, Glasgow G12 8QQ, United KingdomIdaho State University, Pocatello, ID 83209, USA; Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAINFN, Sezione di Ferrara, 44100 Ferrara, ItalyFlorida State University, Tallahassee, FL 32306, USAINFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy; Universita' di Roma Tor Vergata, 00133 Rome, ItalyYerevan Physics Institute, 375036 Yerevan, ArmeniaINFN, Sezione di Genova, 16146 Genova, ItalyINFN, Laboratori Nazionali di Frascati, 00044 Frascati, ItalyIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAUniversity of South Carolina, Columbia, SC 29208, USAInstitut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, FranceThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAUniversidad Técnica Federico Santa María, Casilla 110-V Valparaíso, ChileMississippi State University, Mississippi State, MS 39762-5167, USAThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAFlorida State University, Tallahassee, FL 32306, USAOhio University, Athens, OH 45701, USAChristopher Newport University, Newport News, VA 23606, USAINFN, Sezione di Torino, 10125 Torino, ItalyIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceYerevan Physics Institute, 375036 Yerevan, ArmeniaUniversity of Richmond, Richmond, VA 23173, USAThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USASkobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, RussiaCollege of William and Mary, Williamsburg, VA 23187-8795, USAFlorida International University, Miami, FL 33199, USA; Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAArgonne National Laboratory, Argonne, IL 60439, USAUniversidad Técnica Federico Santa María, Casilla 110-V Valparaíso, Chile; Yerevan Physics Institute, 375036 Yerevan, ArmeniaThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAArgonne National Laboratory, Argonne, IL 60439, USAChristopher Newport University, Newport News, VA 23606, USA; Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAOhio University, Athens, OH 45701, USAUniversity of New Hampshire, Durham, NH 03824-3568, USAOld Dominion University, Norfolk, VA 23529, USAUniversity of South Carolina, Columbia, SC 29208, USA; The George Washington University, Washington, DC 20052, USAUniversity of Glasgow, Glasgow G12 8QQ, United KingdomSkobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, RussiaSkobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, RussiaVirginia Tech, Blacksburg, VA 24061-0435, USAArgonne National Laboratory, Argonne, IL 60439, USAUniversity of Connecticut, Storrs, CT 06269, USA; Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAMississippi State University, Mississippi State, MS 39762-5167, USAUniversity of Virginia, Charlottesville, VA 22901, USAYerevan Physics Institute, 375036 Yerevan, ArmeniaOld Dominion University, Norfolk, VA 23529, USANorfolk State University, Norfolk, VA 23504, USAKyungpook National University, Daegu 41566, Republic of KoreaCatholic University of America, Washington, DC 20064, USAThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAOld Dominion University, Norfolk, VA 23529, USAINFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy; Universita' di Roma Tor Vergata, 00133 Rome, ItalyUniversity of Glasgow, Glasgow G12 8QQ, United KingdomUniversity of Glasgow, Glasgow G12 8QQ, United KingdomUniversity of Connecticut, Storrs, CT 06269, USAUniversity of Glasgow, Glasgow G12 8QQ, United KingdomINFN, Laboratori Nazionali di Frascati, 00044 Frascati, ItalyThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAUniversity of Glasgow, Glasgow G12 8QQ, United KingdomInstitut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, FranceThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAInstitut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, FranceJames Madison University, Harrisonburg, VA 22807, USA; Ohio University, Athens, OH 45701, USAINFN, Sezione di Genova, 16146 Genova, ItalyTemple University, Philadelphia, PA 19122, USAUniversity of New Hampshire, Durham, NH 03824-3568, USAThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAFlorida International University, Miami, FL 33199, USAInstitute of Theoretical and Experimental Physics, Moscow, 117259, RussiaOld Dominion University, Norfolk, VA 23529, USACalifornia State University, Dominguez Hills, Carson, CA 90747, USAOld Dominion University, Norfolk, VA 23529, USA; University of Virginia, Charlottesville, VA 22901, USAUniversity of New Hampshire, Durham, NH 03824-3568, USAINFN, Sezione di Genova, 16146 Genova, ItalyINFN, Sezione di Roma Tor Vergata, 00133 Rome, Italy; Universita' di Roma Tor Vergata, 00133 Rome, ItalyThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; INFN, Laboratori Nazionali di Frascati, 00044 Frascati, ItalyIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceNorfolk State University, Norfolk, VA 23504, USACarnegie Mellon University, Pittsburgh, PA 15213, USAThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAUniversity of South Carolina, Columbia, SC 29208, USA; Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119234 Moscow, RussiaEdinburgh University, Edinburgh EH9 3JZ, United KingdomUniversity of Glasgow, Glasgow G12 8QQ, United KingdomTemple University, Philadelphia, PA 19122, USAThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAThe George Washington University, Washington, DC 20052, USAUniversity of South Carolina, Columbia, SC 29208, USA; The George Washington University, Washington, DC 20052, USAUniversità di Genova, 16146 Genova, ItalyKyungpook National University, Daegu 41566, Republic of KoreaThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA; Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USAYerevan Physics Institute, 375036 Yerevan, ArmeniaInstitut de Physique Nucléaire, CNRS/IN2P3 and Université Paris Sud, Orsay, FranceThomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAEdinburgh University, Edinburgh EH9 3JZ, United KingdomUniversity of Virginia, Charlottesville, VA 22901, USAWe report on the first measurement of cross sections for exclusive deeply virtual pion electroproduction off the proton, ep→e′nπ+, above the resonance region at backward pion center-of-mass angles. The φπ⁎-dependent cross sections were measured, from which we extracted three combinations of structure functions of the proton. Our results are compatible with calculations based on nucleon-to-pion transition distribution amplitudes (TDAs). These non-perturbative objects are defined as matrix elements of three-quark-light-cone-operators and characterize partonic correlations with a particular emphasis on baryon charge distribution inside a nucleon. Keywords: TDA, Exclusive single pion, Eletroproduction, CLAShttp://www.sciencedirect.com/science/article/pii/S0370269318302156 |
| spellingShingle | K. Park M. Guidal R.W. Gothe B. Pire K. Semenov-Tian-Shansky J.-M. Laget K.P. Adhikari S. Adhikari Z. Akbar H. Avakian J. Ball I. Balossino N.A. Baltzell L. Barion M. Battaglieri I. Bedlinskiy A.S. Biselli W.J. Briscoe W.K. Brooks V.D. Burkert F.T. Cao D.S. Carman A. Celentano G. Charles T. Chetry G. Ciullo L. Clark P.L. Cole M. Contalbrigo V. Crede A. D'Angelo N. Dashyan R. De Vita E. De Sanctis M. Defurne A. Deur C. Djalali R. Dupre H. Egiyan A. El Alaoui L. El Fassi L. Elouadrhiri P. Eugenio G. Fedotov R. Fersch A. Filippi M. Garçon Y. Ghandilyan G.P. Gilfoyle F.X. Girod E. Golovatch K.A. Griffioen L. Guo K. Hafidi H. Hakobyan C. Hanretty N. Harrison M. Hattawy D. Heddle K. Hicks M. Holtrop C.E. Hyde Y. Ilieva D.G. Ireland B.S. Ishkhanov E.L. Isupov D. Jenkins S. Johnston K. Joo M.L. Kabir D. Keller G. Khachatryan M. Khachatryan M. Khandaker W. Kim F.J. Klein V. Kubarovsky S.E. Kuhn L. Lanza K. Livingston I.J.D. MacGregor N. Markov B. McKinnon M. Mirazita V. Mokeev R.A. Montgomery C. Munoz Camacho P. Nadel-Turonski S. Niccolai G. Niculescu M. Osipenko M. Paolone R. Paremuzyan E. Pasyuk W. Phelps O. Pogorelko J. Poudel J.W. Price Y. Prok D. Protopopescu M. Ripani A. Rizzo P. Rossi F. Sabatié C. Salgado R.A. Schumacher Y. Sharabian Iu. Skorodumina G.D. Smith D. Sokhan N. Sparveris S. Stepanyan I.I. Strakovsky S. Strauch M. Taiuti J.A. Tan M. Ungaro H. Voskanyan E. Voutier X. Wei N. Zachariou J. Zhang Hard exclusive pion electroproduction at backward angles with CLAS Physics Letters B |
| title | Hard exclusive pion electroproduction at backward angles with CLAS |
| title_full | Hard exclusive pion electroproduction at backward angles with CLAS |
| title_fullStr | Hard exclusive pion electroproduction at backward angles with CLAS |
| title_full_unstemmed | Hard exclusive pion electroproduction at backward angles with CLAS |
| title_short | Hard exclusive pion electroproduction at backward angles with CLAS |
| title_sort | hard exclusive pion electroproduction at backward angles with clas |
| url | http://www.sciencedirect.com/science/article/pii/S0370269318302156 |
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hardexclusivepionelectroproductionatbackwardangleswithclas AT sstepanyan hardexclusivepionelectroproductionatbackwardangleswithclas AT iistrakovsky hardexclusivepionelectroproductionatbackwardangleswithclas AT sstrauch hardexclusivepionelectroproductionatbackwardangleswithclas AT mtaiuti hardexclusivepionelectroproductionatbackwardangleswithclas AT jatan hardexclusivepionelectroproductionatbackwardangleswithclas AT mungaro hardexclusivepionelectroproductionatbackwardangleswithclas AT hvoskanyan hardexclusivepionelectroproductionatbackwardangleswithclas AT evoutier hardexclusivepionelectroproductionatbackwardangleswithclas AT xwei hardexclusivepionelectroproductionatbackwardangleswithclas AT nzachariou hardexclusivepionelectroproductionatbackwardangleswithclas AT jzhang hardexclusivepionelectroproductionatbackwardangleswithclas |