Related papers: Semi-inclusive pion electroproduction with CLAS

Parton-to-Pion Fragmentation Reloaded

We present a new, comprehensive global analysis of parton-to-pion fragmentation functions at next-to-leading order accuracy in QCD. The obtained results are based on the latest experimental information on single-inclusive pion production in…

High Energy Physics - Phenomenology · Physics 2015-06-23 D. de Florian , R. Sassot , M. Epele , R. J. Hernandez-Pinto , M. Stratmann

Hard Exclusive Electroproduction of Pions

We investigate the exclusive electroproduction of pi^+ mesons from nucleons. To leading twist, leading order alpha_s accuracy the corresponding production amplitude can be decomposed into pseudovector and pseudoscalar parts. Both can be…

High Energy Physics - Phenomenology · Physics 2008-11-26 L. Mankiewicz , G. Piller , A. Radyushkin

Measurement of Collins asymmetries in inclusive production of charged pion pairs in e^+e^- annihilation at BABAR

We present measurements of Collins asymmetries in the inclusive process e+e- -->pi pi X, where pi stands for charged pions, at a center-of-mass energy of 10.6 GeV. We use a data sample of 468 fb-1 collected by the BABAR experiment at the…

High Energy Physics - Experiment · Physics 2014-09-25 The BABAR Collaboration

Inclusive Electron Scattering in the Resonance Region off a Hydrogen Target with CLAS12

Inclusive electron scattering cross sections off a hydrogen target at a beam energy of 10.6 GeV have been measured with data collected from the CLAS12 spectrometer at Jefferson Laboratory. These first absolute cross sections from CLAS12…

High Energy Physics - Experiment · Physics 2025-01-28 V. Klimenko , D. S. Carman , R. W. Gothe , K. Joo , N. Markov , V. I. Mokeev , G. Niculescu , P. Achenbach , J. S. Alvarado , W. Armstrong , H. Atac , H. Avakian , L. Baashen , N. A. Baltzell , L. Barion , M. Bashkanov , M. Battaglieri , F. Benmokhtar , A. Bianconi , A. S. Biselli , S. Boiarinov , F. Bossu , K. -Th. Brinkmann , W. J. Briscoe , W. K. Brooks , V. D. Burkert , S. Bueltmann , R. Capobianco , J. Carvajal , A. Celentano , P. Chatagnon , G. Ciullo , A. D Angelo , N. Dashyan , M. Defurne , R. De Vita , A. Deur , S. Diehl , C. Dilks , C. Djalali , R. Dupre , H. Egiyan , A. El Alaoui , L. El Fassi , L. Elouadrhiri , S. Fegan , I. P. Fernando , A. Filippi , G. Gavalian , G. P. Gilfoyle , D. I. Glazier , K. Hafidi , H. Hakobyan , M. Hattawy , F. Hauenstein , T. B. Hayward , D. Heddle , A. N. Hiller Blin , A. Hobart , M. Holtrop , Y. Ilieva , D. G. Ireland , E. L. Isupov , H. Jiang , H. S. Jo , S. Joosten , T. Kageya , D. Keller , A. Kim , W. Kim , H. T. Klest , A. Kripko , V. Kubarovsky , S. E. Kuhn , L. Lanza , S. Lee , P. Lenisa , K. Livingston , I. J. D. MacGregor , D. Marchand , D. Martiryan , V. Mascagna , D. Matamoris , B. McKinnon , T. Mineeva , M. Mirazita , C. Munoz Camacho , P. Nadel Turonski , T. Nagorna , K. Neupane , S. Niccolai , M. Osipenko , M. Paolone , L. L. Pappalardo , R. Paremuzyan , E. Pasyuk , S. J. Paul , W. Phelps , N. Pilleux , S. Polcher Rafael , J. W. Price , Y. Prok , B. A. Raue , J. Richards , M. Ripani , J. Ritman , P. Rossi , A. A. Rusova , C. Salgado , S. Schadmand , A. Schmidt , Y. G. Sharabian , E. V. Shirokov , S. Shrestha , N. Sparveris , M. Spreafico , S. Stepanyan , I. I. Strakovsky , S. Strauch , J. A Tan , M. Tenorio , N. Trotta , R. Tyson , M. Ungaro , S. Vallarino , L. Venturelli , T. Vittorini , H. Voskanyan , E. Voutier , D. P. Watts , U. Weerasinghe , X. Wei , M. H. Wood , L. Xu , N. Zachariou , Z. W. Zhao , M. Zurek , V. Klimenko , D. S. Carman , R. W. Gothe , K. Joo , N. Markov , V. I. Mokeev , G. Niculescu , P. Achenbach , J. S. Alvarado , W. Armstrong , H. Atac , H. Avakian , L. Baashen , N. A. Baltzell , L. Barion , M. Bashkanov , M. Battaglieri , F. Benmokhtar , A. Bianconi , A. S. Biselli , S. Boiarinov , F. Bossu , K. -Th. Brinkmann , W. J. Briscoe , W. K. Brooks , V. D. Burkert , S. Bueltmann , R. Capobianco , J. Carvajal , A. Celentano , P. Chatagnon , G. Ciullo , A. D Angelo , N. Dashyan , M. Defurne , R. De Vita , A. Deur , S. Diehl , C. Dilks , C. Djalali , R. Dupre , H. Egiyan , A. El Alaoui , L. El Fassi , L. Elouadrhiri , S. Fegan , I. P. Fernando , A. Filippi , G. Gavalian , G. P. Gilfoyle , D. I. Glazier , K. Hafidi , H. Hakobyan , M. Hattawy , F. Hauenstein , T. B. Hayward , D. Heddle , A. N. Hiller Blin , A. Hobart , M. Holtrop , Y. Ilieva , D. G. Ireland , E. L. Isupov , H. Jiang , H. S. Jo , S. Joosten , T. Kageya , D. Keller , A. Kim , W. Kim , H. T. Klest , A. Kripko , V. Kubarovsky , S. E. Kuhn , L. Lanza , S. Lee , P. Lenisa , K. Livingston , I. J. D. MacGregor , D. Marchand , D. Martiryan , V. Mascagna , D. Matamoris , B. McKinnon , T. Mineeva , M. Mirazita , C. Munoz Camacho , P. Nadel Turonski , T. Nagorna , K. Neupane , S. Niccolai , M. Osipenko , M. Paolone , L. L. Pappalardo , R. Paremuzyan , E. Pasyuk , S. J. Paul , W. Phelps , N. Pilleux , S. Polcher Rafael , J. W. Price , Y. Prok , B. A. Raue , J. Richards , M. Ripani , J. Ritman , P. Rossi , A. A. Rusova , C. Salgado , S. Schadmand , A. Schmidt , Y. G. Sharabian , E. V. Shirokov , S. Shresth , N. Sparveris , M. Spreafico , S. Stepanyan , I. I. Strakovsky , S. Strauch , J. A Tan , M. Tenorio , N. Trotta , R. Tyson , M. Ungaro , S. Vallarino , L. Venturelli , T. Vittorini , H. Voskanyan , E. Voutier , D. P. Watts , U. Weerasinghe , X. Wei , M. H. Wood , L. Xu , N. Zachariou , Z. W. Zhao , M. Zurek

Measurement of azimuthal asymmetries in inclusive charged dipion production in $e^+e^-$ annihilations at $\sqrt{s}$ = 3.65 GeV

We present a measurement of the azimuthal asymmetries of two charged pions in the inclusive process $e^+e^-\rightarrow \pi\pi X$ based on a data set of 62 $\rm{pb}^{-1}$ at the center-of-mass energy $\sqrt{s}=3.65$ GeV collected with the…

High Energy Physics - Experiment · Physics 2016-01-29 BESIII Collaboration , M. Ablikim , M. N. Achasov , X. C. Ai , O. Albayrak , M. Albrecht , D. J. Ambrose , A. Amoroso , F. F. An , Q. An , J. Z. Bai , R. Baldini Ferroli , Y. Ban , D. W. Bennett , J. V. Bennett , M. Bertani , D. Bettoni , J. M. Bian , F. Bianchi , E. Boger , I. Boyko , R. A. Briere , H. Cai , X. Cai , O. Cakir , A. Calcaterra , G. F. Cao , S. A. Cetin , J. F. Chang , G. Chelkov , G. Chen , H. S. Chen , H. Y. Chen , J. C. Chen , M. L. Chen , S. J. Chen , X. Chen , X. R. Chen , Y. B. Chen , H. P. Cheng , X. K. Chu , G. Cibinetto , H. L. Dai , J. P. Dai , A. Dbeyssi , D. Dedovich , Z. Y. Deng , A. Denig , I. Denysenko , M. Destefanis , F. De Mori , Y. Ding , C. Dong , J. Dong , L. Y. Dong , M. Y. Dong , S. X. Du , P. F. Duan , E. E. Eren , J. Z. Fan , J. Fang , S. S. Fang , X. Fang , Y. Fang , L. Fava , F. Feldbauer , G. Felici , C. Q. Feng , E. Fioravanti , M. Fritsch , C. D. Fu , Q. Gao , X. Y. Gao , Y. Gao , Z. Gao , I. Garzia , K. Goetzen , W. X. Gong , W. Gradl , M. Greco , M. H. Gu , Y. T. Gu , Y. H. Guan , A. Q. Guo , L. B. Guo , Y. Guo , Y. P. Guo , Z. Haddadi , A. Hafner , S. Han , X. Q. Hao , F. A. Harris , K. L. He , X. Q. He , T. Held , Y. K. Heng , Z. L. Hou , C. Hu , H. M. Hu , J. F. Hu , T. Hu , Y. Hu , G. M. Huang , G. S. Huang , J. S. Huang , X. T. Huang , Y. Huang , T. Hussain , Q. Ji , Q. P. Ji , X. B. Ji , X. L. Ji , L. W. Jiang , X. S. Jiang , X. Y. Jiang , J. B. Jiao , Z. Jiao , D. P. Jin , S. Jin , T. Johansson , A. Julin , N. Kalantar-Nayestanaki , X. L. Kang , X. S. Kang , M. Kavatsyuk , B. C. Ke , P. Kiese , R. Kliemt , B. Kloss , O. B. Kolcu , B. Kopf , M. Kornicer , W. Kühn , A. Kupsc , J. S. Lange , M. Lara , P. Larin , C. Leng , C. Li , Cheng Li , D. M. Li , F. Li , F. Y. Li , G. Li , H. B. Li , J. C. Li , Jin Li , K. Li , K. Li , Lei Li , P. R. Li , T. Li , W. D. Li , W. G. Li , X. L. Li , X. M. Li , X. N. Li , X. Q. Li , Z. B. Li , H. Liang , Y. F. Liang , Y. T. Liang , G. R. Liao , D. X. Lin , B. J. Liu , C. X. Liu , F. H. Liu , Fang Liu , Feng Liu , H. B. Liu , H. H. Liu , H. H. Liu , H. M. Liu , J. Liu , J. B. Liu , J. P. Liu , J. Y. Liu , K. Liu , K. Y. Liu , L. D. Liu , P. L. Liu , Q. Liu , S. B. Liu , X. Liu , Y. B. Liu , Z. A. Liu , Zhiqing Liu , H. Loehner , X. C. Lou , H. J. Lu , J. G. Lu , Y. Lu , Y. P. Lu , C. L. Luo , M. X. Luo , T. Luo , X. L. Luo , X. R. Lyu , F. C. Ma , H. L. Ma , L. L. Ma , Q. M. Ma , T. Ma , X. N. Ma , X. Y. Ma , F. E. Maas , M. Maggiora , Y. J. Mao , Z. P. Mao , S. Marcello , J. G. Messchendorp , J. Min , R. E. Mitchell , X. H. Mo , Y. J. Mo , C. Morales Morales , K. Moriya , N. Yu. Muchnoi , H. Muramatsu , Y. Nefedov , F. Nerling , I. B. Nikolaev , Z. Ning , S. Nisar , S. L. Niu , X. Y. Niu , S. L. Olsen , Q. Ouyang , S. Pacetti , P. Patteri , M. Pelizaeus , H. P. Peng , K. Peters , J. Pettersson , J. L. Ping , R. G. Ping , R. Poling , V. Prasad , M. Qi , S. Qian , C. F. Qiao , L. Q. Qin , N. Qin , X. S. Qin , Z. H. Qin , J. F. Qiu , K. H. Rashid , C. F. Redmer , M. Ripka , G. Rong , Ch. Rosner , X. D. Ruan , V. Santoro , A. Sarantsev , M. Savri'e , K. Schoenning , S. Schumann , W. Shan , M. Shao , C. P. Shen , P. X. Shen , X. Y. Shen , H. Y. Sheng , W. M. Song , X. Y. Song , S. Sosio , S. Spataro , G. X. Sun , J. F. Sun , S. S. Sun , Y. J. Sun , Y. Z. Sun , Z. J. Sun , Z. T. Sun , C. J. Tang , X. Tang , I. Tapan , E. H. Thorndike , M. Tiemens , M. Ullrich , I. Uman , G. S. Varner , B. Wang , D. Wang , D. Y. Wang , K. Wang , L. L. Wang , L. S. Wang , M. Wang , P. Wang , P. L. Wang , S. G. Wang , W. Wang , X. F. Wang , Y. D. Wang , Y. F. Wang , Y. Q. Wang , Z. Wang , Z. G. Wang , Z. H. Wang , Z. Y. Wang , T. Weber , D. H. Wei , J. B. Wei , P. Weidenkaff , S. P. Wen , U. Wiedner , M. Wolke , L. H. Wu , Z. Wu , L. G. Xia , Y. Xia , D. Xiao , H. Xiao , Z. J. Xiao , Y. G. Xie , Q. L. Xiu , G. F. Xu , L. Xu , Q. J. Xu , X. P. Xu , L. Yan , W. B. Yan , W. C. Yan , Y. H. Yan , H. J. Yang , H. X. Yang , L. Yang , Y. Yang , Y. X. Yang , M. Ye , M. H. Ye , J. H. Yin , B. X. Yu , C. X. Yu , J. S. Yu , C. Z. Yuan , W. L. Yuan , Y. Yuan , A. Yuncu , A. A. Zafar , A. Zallo , Y. Zeng , B. X. Zhang , B. Y. Zhang , C. Zhang , C. C. Zhang , D. H. Zhang , H. H. Zhang , H. Y. Zhang , J. J. Zhang , J. L. Zhang , J. Q. Zhang , J. W. Zhang , J. Y. Zhang , J. Z. Zhang , K. Zhang , L. Zhang , X. Y. Zhang , Y. Zhang , Y. N. Zhang , Y. H. Zhang , Y. T. Zhang , Yu Zhang , Z. H. Zhang , Z. P. Zhang , Z. Y. Zhang , G. Zhao , J. W. Zhao , J. Y. Zhao , J. Z. Zhao , Lei Zhao , Ling Zhao , M. G. Zhao , Q. Zhao , Q. W. Zhao , S. J. Zhao , T. C. Zhao , Y. B. Zhao , Z. G. Zhao , A. Zhemchugov , B. Zheng , J. P. Zheng , W. J. Zheng , Y. H. Zheng , B. Zhong , L. Zhou , X. Zhou , X. K. Zhou , X. R. Zhou , X. Y. Zhou , K. Zhu , K. J. Zhu , S. Zhu , S. H. Zhu , X. L. Zhu , Y. C. Zhu , Y. S. Zhu , Z. A. Zhu , J. Zhuang , L. Zotti , B. S. Zou , J. H. Zou

Exclusive $\eta$ electroproduction at $W>2$ GeV with CLAS and transversity generalized parton distributions

The cross section of the exclusive $\eta$ electroproduction reaction $ep\to e^\prime p^\prime \eta$ was measured at Jefferson Lab with a 5.75-GeV electron beam and the CLAS detector. Differential cross sections…

Nuclear Experiment · Physics 2017-03-24 CLAS Collaboration , I. Bedlinskiy , V. Kubarovsky , P. Stoler , K. P. Adhikari , Z. Akbar , S. Anefalos Pereira , H. Avakian , J. Ball , N. A. Baltzell , M. Battaglieri , V. Batourine , A. S. Biselli , S. Boiarinov , W. J. Briscoe , V. D. Burkert , T. Cao , D. S. Carman , A. Celentano , S. Chandavar , G. Charles , G. Ciullo , L. Clark , L. Colaneri , P. L. Cole , M. Contalbrigo , V. Crede , A. D'Angelo , N. Dashyan , R. De Vita , E. De Sanctis , A. Deur , C. Djalali , R. Dupre , A. El Alaoui , L. El Fassi , L. Elouadrhiri , P. Eugenio , E. Fanchini , G. Fedotov , R. Fersch , A. Filippi , J. A. Fleming , T. A. Forest , M. Garçon , N. Gevorgyan , Y. Ghandilyan , G. P. Gilfoyle , K. L. Giovanetti , F. X. Girod , C. Gleason , E. Golovatch , R. W. Gothe , K. A. Griffioen , M. Guidal , L. Guo , K. Hafidi , H. Hakobyan , C. Hanretty , N. Harrison , M. Hattawy , K. Hicks , S. M. Hughes , C. E. Hyde , Y. Ilieva , D. G. Ireland , B. S. Ishkhanov , E. L. Isupov , D. Jenkins , H. Jiang , H. S. Jo , K. Joo , S. Joosten , D. Keller , G. Khachatryan , M. Khachatryan , M. Khandaker , A. Kim , W. Kim , F. J. Klein , S. E. Kuhn , S. V. Kuleshov , L. Lanza , P. Lenisa , K. Livingston , I. J. D. MacGregor , N. Markov , B. McKinnon , Z. E. Meziani , M. Mirazita , V. Mokeev , R. A. Montgomery , A. Movsisyan , C. Munoz Camacho , P. Nadel-Turonski , L. A. Net , A. Ni , S. Niccolai , G. Niculescu , M. Osipenko , A. I. Ostrovidov , M. Paolone , R. Paremuzyan , K. Park , E. Pasyuk , P. Peng , W. Phelps , S. Pisano , O. Pogorelko , J. W. Price , Y. Prok , D. Protopopescu , A. J. R. Puckett , B. A. Raue , M. Ripani , A. Rizzo , G. Rosner , P. Rossi , P. Roy , F. Sabatié , M. S. Saini , C. Salgado , R. A. Schumacher , Y. G. Sharabian , Iu. Skorodumina , G. D. Smith , D. Sokhan , N. Sparveris , S. Stepanyan , I. I. Strakovsky , S. Strauch , M. Taiuti , Ye Tian , B. Torayev , M. Turisini , M. Ungaro , H. Voskanyan , E. Voutier , N. K. Walford , D. P. Watts , X. Wei , L. B. Weinstein , M. H. Wood , M. Yurov , N. Zachariou , J. Zhang , I. Zonta

Production of pions, kaons and protons in pp collisions at $\sqrt{s}=900$ GeV with ALICE at the LHC

The production of $\pi^+$, $\pi^-$, $K^+$, $K^-$, p, and pbar at mid-rapidity has been measured in proton-proton collisions at $\sqrt{s} = 900$ GeV with the ALICE detector. Particle identification is performed using the specific energy loss…

High Energy Physics - Experiment · Physics 2017-09-29 ALICE Collaboration

Lattice QCD constraints on pion electroproduction off a nucleon

Very recently, a lattice QCD collaboration has explored threshold pion electroproduction near the physical pion mass and has simulated the relevant multipole amplitudes. Different multipole amplitudes are usually entangled in experimental…

High Energy Physics - Phenomenology · Physics 2026-03-09 Yu Zhuge , Zhan-Wei Liu , Derek B. Leinweber , Anthony W. Thomas

Precision physics with inclusive QCD processes

The inclusive production of hadrons through electroweak currents can be rigorously analysed with short-distance theoretical tools. The associated observables are insensitive to the involved infrared behaviour of the strong interaction,…

High Energy Physics - Phenomenology · Physics 2021-02-03 Antonio Pich

The nucleon resonance structure from exclusive $\pi^+\pi^-p$ photo-/electroproduction off protons

The results on the photo- and electroexcitation amplitudes of most nucleon resonances in the mass range up to 2.0 GeV determined from the CLAS experimental data on exclusive $\pi^+\pi^-p$ photo-/electroproduction off protons in…

Nuclear Experiment · Physics 2019-01-29 V. D. Burkert , V. I. Mokeev , B. S. Ishkhanov

Measurement of Beam-Spin Asymmetries for Deep Inelastic $\pi^+$ Electroproduction

We report the first evidence for a non-zero beam-spin azimuthal asymmetry in the electroproduction of positive pions in the deep-inelastic region. Data have been obtained using a polarized electron beam of 4.3 GeV with the CLAS detector at…

High Energy Physics - Experiment · Physics 2010-04-06 CLAS Collaboration , H. Avakian

Cross Section Measurement of Charged Pion Photoproduction from Hydrogen and Deuterium

We have measured the differential cross section for the gamma n --> pi- p and gamma p --> pi+ n reactions at center of mass angle of 90 degree in the photon energy range from 1.1 to 5.5 GeV at Jefferson Lab (JLab). The data at photon…

Nuclear Experiment · Physics 2008-11-26 L. Y. Zhu

A NLO calculation of the hadron-jet cross section in photoproduction reactions

We study the photoproduction of large-p_T charged hadrons in e p collisions, both for the inclusive case and for the case where a jet in the final state is also measured. Our results are obtained by a NLO generator of partonic events. We…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Fontannaz , J. Ph. Guillet , G. Heinrich

New Baryon States in Exclusive Meson Photo-/Electroproduction with CLAS

Impressive progress achieved in the past decade in experimental studies of exclusive meson photoproduction off protons and global multi-channel amplitude analyses has resulted in the discovery of several long-awaited new nucleon resonances,…

Nuclear Experiment · Physics 2022-01-03 Victor I. Mokeev , Daniel S. Carman

Measurement of top quark pair production in association with a Z boson in proton-proton collisions at $\sqrt{s} =$ 13 TeV

A measurement of the inclusive cross section of top quark pair production in association with a Z boson using proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC is performed. The data sample corresponds to an…

High Energy Physics - Experiment · Physics 2020-03-23 CMS Collaboration

Fragmentation Functions measurement at COMPASS

Fragmentation functions represent a key ingredient to address the proton spin structure in semi-inclusive deep-inelastic scattering and proton-proton collisions. They can not be determined from perturbative Quantum Chromodynamics and have…

High Energy Physics - Experiment · Physics 2022-03-02 Nour Makke

QCD Analysis of Unpolarized and Polarized Lambda - Baryon Production in Leading and Next-to-Leading Order

We analyze experimental data for the production of Lambda baryons in e^+e^- annihilation in terms of scale dependent, QCD evolved, Lambda fragmentation functions. Apart from the vast majority of the data for which the polarization of an…

High Energy Physics - Phenomenology · Physics 2009-10-30 D. de Florian , M. Stratmann , W. Vogelsang

Measurement of the neutral pion cross section in proton-proton collisions at sqrt{s}=200GeV with PHENIX

The inclusive cross section for neutral pion production in the range 1<p_T<13GeV/c in |eta|<0.35 has been measured by the PHENIX experiment in proton-proton collisions at sqrt{s}=200GeV. An NLO pQCD calculation is, within the experimental…

Nuclear Experiment · Physics 2019-08-14 H. Torii

Semiexclusive production of $J/\psi$ mesons in proton-proton collisions with electromagnetic and diffractive dissociation of one of the protons

We calculate the cross sections for both electromagnetic and diffractive dissociation of protons for semiexclusive production of $J/\psi$ mesons in proton-proton collisions at the LHC. Several differential distributions in missing mass…

High Energy Physics - Phenomenology · Physics 2017-04-26 Anna Cisek , Wolfgang Schäfer , Antoni Szczurek

Transition nucleon resonance electrocouplings from CLAS data on $\pi^{+}\pi^{-}p$ electroproduction off protons

Electrocouplings of excited proton states with masses less than 1.8 GeV were determined for the first time from the CLAS data on $\pi^+\pi^-p$ electroproduction at photon virtualities $Q^2$ $<$ 1.5 GeV$^2$. Electrocouplings were obtained…

Nuclear Experiment · Physics 2015-05-20 Victor I. Mokeev