Related papers: Exclusive $\pi^+$ electroproduction off the proton…

Separated Response Functions in Exclusive, Forward $\pi^{\pm}$ Electroproduction on Deuterium

Background: Measurements of forward exclusive meson production at different squared four-momenta of the exchanged virtual photon, $Q^2$, and at different four-momentum transfer, t, can be used to probe QCD's transition from meson-nucleon…

Nuclear Experiment · Physics 2015-01-08 G. M. Huber , H. P. Blok , C. Butuceanu , D. Gaskell , T. Horn , D. J. Mack , D. Abbott , K. Aniol , H. Anklin , C. Armstrong , J. Arrington , K. Assamagan , S. Avery , O. K. Baker , B. Barrett , E. J. Beise , C. Bochna , W. Boeglin , E. J. Brash , H. Breuer , C. C. Chang , N. Chant , M. E. Christy , J. Dunne , T. Eden , R. Ent , H. Fenker , E. F. Gibson , R. Gilman , K. Gustafsson , W. Hinton , R. J. Holt , H. Jackson , S. Jin , M. K. Jones , C. E. Keppel , P. H. Kim , W. Kim , P. M. King , A. Klein , D. Koltenuk , V. Kovaltchouk , M. Liang , J. Liu , G. J. Lolos , A. Lung , D. J. Margaziotis , P. Markowitz , A. Matsumura , D. McKee , D. Meekins , J. Mitchell , T. Miyoshi , H. Mkrtchyan , B. Mueller , G. Niculescu , I. Niculescu , Y. Okayasu , L. Pentchev , C. Perdrisat , D. Pitz , D. Potterveld , V. Punjabi , L. M. Qin , P. E. Reimer , J. Reinhold , J. Roche , P. G. Roos , A. Sarty , I. K. Shin , G. R. Smith , S. Stepanyan , L. G. Tang , V. Tadevosyan , V. Tvaskis , R. L. J. van der Meer , K. Vansyoc , D. Van Westrum , S. Vidakovic , J. Volmer , W. Vulcan , G. Warren , S. A. Wood , C. Xu , C. Yan , W. -X. Zhao , X. Zheng , B. Zihlmann , The Jefferson Lab Fpi Collaboration

New Results on the $\pi^{+}\pi^{-}$ Electroproduction Cross Sections off Protons

In these proceedings we present preliminary $\pi^{+}\pi^{-}$ electroproduction cross sections off protons in the kinematical area of 1.4 GeV $< W <$ 1.8 GeV and 0.4 GeV$^{2}$ $< Q^{2} < 1.1$ GeV$^{2}$. Our results extend the kinematical…

Nuclear Experiment · Physics 2015-05-30 G. V. Fedotov , R. W. Gothe

Deep exclusive $\pi^+$ electroproduction off the proton at CLAS

The exclusive electroproduction of $\pi^+$ above the resonance region was studied using the $\rm{CEBAF}$ Large Acceptance Spectrometer ($\rm{CLAS}$) at Jefferson Laboratory by scattering a 6 GeV continuous electron beam off a hydrogen…

Nuclear Experiment · Physics 2013-01-29 K. Park , M. Guidal , R. W. Gothe , J. M. Laget , M. Garçon , K. P. Adhikari , M. Aghasyan , M. J. Amaryan , M. Anghinolfi , H. Avakian , H. Baghdasaryan , J. Ball , N. A. Baltzell , M. Battaglieri , I. Bedlinsky , R. P. Bennett , A. S. Biselli , C. Bookwalter , S. Boiarinov , W. J. Briscoe , W. K. Brooks , V. D. Burkert , D. S. Carman , A. Celentano , S. Chandavar , G. Charles , M. Contalbrigo , V. Crede , A. D'Angelo , A. Daniel , N. Dashyan , R. De Vita , E. De Sanctis , A. Deur , C. Djalali , G. E. Dodge , D. Doughty , R. Dupre , H. Egiyan , A. El Alaoui , L. El Fassi , A. Fradi , P. Eugenio , G. Fedotov , S. Fegan , J. A. Fleming , T. A. Forest , N. Gevorgyan , G. P. Gilfoyle , K. L. Giovanetti , F. X. Girod , W. Gohn , E. Golovatch , L. Graham , K. A. Griffioen , B. Guegan , L. Guo , K. Hafidi , H. Hakobyan , C. Hanretty , D. Heddle , K. Hicks , D. Ho , M. Holtrop , Y. Ilieva , D. G. Ireland , B. S. Ishkhanov , D. Jenkins , H. S. Jo , D. Keller , M. Khandaker , P. Khetarpal , A. Kim , W. Kim , F. J. Klein , S. Koirala , A. Kubarovsky , V. Kubarovsky , S. E. Kuhn , S. V. Kuleshov , K. Livingston , H. Y. Lu , I. J. D. MacGregor , Y. Mao , N. Markov , D. Martinez , M. Mayer , B. McKinnon , C. A. Meyer , T. Mineeva , M. Mirazita , V. Mokeev , H. Moutarde , E. Munevar , C. Munoz Camacho , P. Nadel-Turonski , C. S. Nepali , S. Niccolai , G. Niculescu , I. Niculescu , M. Osipenko , A. I. Ostrovidov , L. L. Pappalardo , R. Paremuzyan , S. Park , E. Pasyuk , S. Anefalos Pereira , E. Phelps , S. Pisano , O. Pogorelko , S. Pozdniakov , J. W. Price , S. Procureur , D. Protopopescu , A. J. R. Puckett , B. A. Raue , G. Ricco , D. Rimal , M. Ripani , G. Rosner , P. Rossi , F. Sabatie , M. S. Saini , C. Salgado , D. Schott , R. A. Schumacher , E. Seder , H. Seraydaryan , Y. G. Sharabian , E. S. Smith , G. D. Smith , D. I. Sober , D. Sokhan , S. S. Stepanyan , P. Stoler , I. I. Strakovsky , S. Strauch , M. Taiuti , W. Tang , C. E. Taylor , Ye Tian , S. Tkachenko , A. Trivedi , M. Ungaro , B . Vernarsky , H. Voskanyan , E. Voutier , N. K. Walford , D. P. Watts , L. B. Weinstein , D. P. Weygand , M. H. Wood , N. Zachariou , J. Zhang , Z. W. Zhao , I. Zonta

Exclusive $\bm{\pi^{0}p}$ electroproduction off protons in the resonance region at photon virtualities 0.4~GeV$\bm{^{2}}$ $\bm{\leq~ Q^{2} \leq~1}$~GeV$\bm{^{2}}$

The exclusive electroproduction process $ep \rightarrow e'p'\pi^{0}$ was measured in the range of photon virtualities $Q^{2} = 0.4 - 1.0$~GeV$^{2}$ and the invariant mass range of the $p\pi^{0}$ system of $W = 1.1 - 1.8$~GeV. These…

Nuclear Experiment · Physics 2020-01-29 N. Markov , K. Joo , V. D. Burkert , V. I. Mokeev , L. C. Smith , M. Ungaro , S. Adhikari , M. J. ~Amaryan , G. Angelini , H. ~Atac , H. ~Avakian , C. Ayerbe Gayoso , N. A. ~Baltzell , L. Barion , M. ~Battaglieri , I. ~Bedlinskiy , I. ~Bedlinskiy , F. Benmokhtar , A. S. ~Biselli , F. ~Bossù , S. ~Boiarinov , W. J. ~Briscoe , W. K. ~Brooks , D. S. ~Carman , J. C. ~Carvajal , A. ~Celentano , P. ~Chatagnon , T. Chetry , P. L. ~Cole , M. ~Contalbrigo , V. ~Crede , G. Ciullo , A. ~D'Angelo , N. ~Dashyan , R. ~De~Vita , E. ~De~Sanctis , M. Defurne , A. ~Deur , S. Diehl , C. ~Djalali , R. ~Dupre , M. ~Ehrhart , A. ~El~Alaoui , L. ~El~Fassi , P. ~Eugenio , C. ~Evans , A. ~Filippi , Y. ~Ghandilyan , F. X. ~Girod , E. ~Golovatch , R. W. ~Gothe , K. A. ~Griffioen , M. ~Guidal , K. ~Hafidi , H. ~Hakobyan , M. ~Hattawy , T. B. ~Hayward , K. ~Hicks , M. ~Holtrop , Y. ~Ilieva , D. G. ~Ireland , B. S. ~Ishkhanov , E. L. ~Isupov , D. ~Jenkins , H. S. ~Jo , D. ~Keller , M. ~Khachatryan , A. ~Khanal , M. ~Khandaker , A. ~Kim , C. W. ~Kim , W. ~Kim , F. J. ~Klein , V. ~Kubarovsky , L. Lanza , M. ~Leali , K. ~Livingston , I . J . D. ~MacGregor , D. ~Marchand , V. ~Mascagna , B. ~McKinnon , T. ~Mineeva , M. ~Mirazita , P. ~Nadel-Turonski , S. ~Nanda , S. ~Niccolai , G. ~Niculescu , M. ~Osipenko , M. ~Paolone , L. L. ~Pappalardo , R. ~Paremuzyan , K. ~Park , E. ~Pasyuk , W. ~Phelps , O. ~Pogorelko , J. W. ~Price , Y. ~Prok , D. ~Protopopescu , M. ~Ripani , D. Riser , A. ~Rizzo , J. ~Rowley , F. ~Sabatié , C. ~Salgado , R. A. ~Schumacher , Y. G. ~Sharabian , U. ~Shrestha , D. ~Sokhan , O. ~Soto , N. ~Sparveris , S. ~Stepanyan , P. ~Stoler , I. I. ~Strakovsky , S. ~Strauch , M. ~Taiuti , J. A. ~Tan , N. ~Tyler , L. ~Venturelli , H. ~Voskanyan , E. ~Voutier , R. Wang , X. ~Wei , M. H. ~Wood , N. ~Zachariou

Deep exclusive electroproduction of $\pi^+$ at HERMES

Deeply virtual electroproduction of pion in exclusive reaction $p(e,e'\pi^+)n$ is studied using a two-component model which includes soft hadronic and hard partonic reaction mechanisms. The results are compared with the experimental data…

High Energy Physics - Phenomenology · Physics 2009-09-11 Murat M. Kaskulov , Ulrich Mosel

First measurement of hard exclusive $\pi^- \Delta^{++}$ electroproduction beam-spin asymmetries off the proton

The polarized cross section ratio $\sigma_{LT'}/\sigma_{0}$ from hard exclusive $\pi^{-} \Delta^{++}$ electroproduction off an unpolarized hydrogen target has been extracted based on beam-spin asymmetry measurements using a 10.2 GeV / 10.6…

High Energy Physics - Experiment · Physics 2023-07-26 S. Diehl , N. Trotta , K. Joo , P. Achenbach , Z. Akbar , W. R. Armstrong , H. Atac , H. Avakian , L. Baashen , N. A. Baltzell , L. Barion , M. Bashkanov , M. Battaglieri , I. Bedlinskiy , F. Benmokhtar , A. Bianconi , A. S. Biselli , F. Bossu , K. -T. Brinkmann , W. J. Briscoe , D. Bulumulla , V. Burkert , R. Capobianco , D. S. Carman , J. C. Carvajal , A. Celentano , G. Charles , P. Chatagnon , V. Chesnokov , G. Ciullo , P. L. Cole , M. Contalbrigo , G. Costantini , V. Crede , A. D'Angelo , N. Dashyan , R. De Vita , A. Deur , C. Djalali , R. Dupre , M. Ehrhart , A. El Alaoui , L. El Fassi , L. Elouadrhiri , S. Fegan , A. Filippi , G. Gavalian , D. I. Glazier , A. A. Golubenko , G. Gosta , R. W. Gothe , Y. Gotra , K. Griffioen , K. Hafidi , H. Hakobyan , M. Hattawy , T. B. Hayward , D. Heddle , A. Hobart , M. Holtrop , I. Illari , D. G. Ireland , E. L. Isupov , H. S. Jo , R. Johnston , D. Keller , M. Khachatryan , A. Khanal , A. Kim , W. Kim , V. Klimenko , A. Kripko , V. Kubarovsky , S. E. Kuhn , V. Lagerquist , L. Lanza , M. Leali , S. Lee , P. Lenisa , X. Li , I . J . D. MacGregor , D. Marchand , V. Mascagna , G. Matousek , B. McKinnon , C. McLauchlin , Z. E. Meziani , S. Migliorati , R. G. Milner , T. Mineeva , M. Mirazita , V. Mokeev , P. Moran , C. Munoz Camacho , P. Naidoo , K. Neupane , S. Niccolai , G. Niculescu , M. Osipenko , P. Pandey , M. Paolone , L. L. Pappalardo , R. Paremuzyan , S. J. Paul , W. Phelps , N. Pilleux , M. Pokhrel , J. Poudel , J. W. Price , Y. Prok , A. Radic , B. A. Raue , T. Reed , J. Richards , M. Ripani , J. Ritman , P. Rossi , F. Sabatie , C. Salgado , S. Schadmand , A. Schmidt , Y. G. Sharabian , U. Shrestha , D. Sokhan , N. Sparveris , M. Spreafico , S. Stepanyan , I. Strakovsky , S. Strauch , M. Turisini , R. Tyson , M. Ungaro , S. Vallarino , L. Venturelli , H. Voskanyan , E. Voutier , D. P. Watts , X. Wei , R. Williams , R. Wishart , M. H. Wood , M. Yurov , N. Zachariou , Z. W. Zhao , M. Zurek

Cross sections for hard exclusive electroproduction of pi+ mesons on a hydrogen target

The exclusive electroproduction of pi+ mesons was studied with the Hermes spectrometer at the DESY laboratory by scattering 27.6 GeV positron and electron beams off an internal hydrogen gas target. The virtual-photon cross sections were…

High Energy Physics - Experiment · Physics 2008-11-26 HERMES Collaboration , A. Airapetian

Photoproduction of $\pi^+ \pi^-$ meson pairs on the proton

The exclusive reaction $\gamma p \to p \pi^+ \pi^-$ was studied in the photon energy range 3.0 - 3.8 GeV and momentum transfer range $0.4<-t<1.0$ GeV$^2$. Data were collected with the CLAS detector at the Thomas Jefferson National…

High Energy Physics - Experiment · Physics 2019-08-13 M. Battaglieri , R. De Vita , A. P. Szczepaniak

Electroproduction of p \pi^{+} \pi^{-} off protons at 0.2<Q^{2}<0.6 GeV^{2} and 1.3<W<1.57 GeV with CLAS

This paper reports on the most comprehensive data set obtained on differential and fully integrated cross sections for the process $e p \to e' p \pi^{+} \pi^{-} $. The data were collected with the CLAS detector at Jefferson Laboratory.…

Nuclear Experiment · Physics 2019-08-13 G. V. Fedotov , V. I. Mokeev , V. D. Burkert , L. Elouadrhiri , E. N. Golovatch , B. S. Ishkhanov , E. L. Isupov , N. V. Shvedunov

Measurement of Exclusive $\pi^{+}\pi^{-}$ and $\rho^0$ Meson Photoproduction at HERA

Exclusive photoproduction of $\rho^0(770)$ mesons is studied using the H1 detector at the $ep$ collider HERA. A sample of about 900000 events is used to measure single- and double-differential cross sections for the reaction $\gamma p \to…

High Energy Physics - Experiment · Physics 2021-03-29 H1 collaboration

Deep exclusive electroproduction of $\pi^0$ at high $Q^2$ in the quark valence regime

We report measurements of the exclusive neutral pion electroproduction cross section off protons at large values of $x_B$ (0.36, 0.48 and 0.60) and $Q^2$ (3.1 to 8.4 GeV$^2$) obtained from Jefferson Lab Hall A experiment E12-06-014. The…

High Energy Physics - Experiment · Physics 2021-10-26 The Jefferson Lab Hall A Collaboration , M. Dlamini , B. Karki , S. F. Ali , P-J. Lin , F. Georges , H-S Ko , N. Israel , M. N. H. Rashad , A. Stefanko , D. Adikaram , Z. Ahmed , H. Albataineh , B. Aljawrneh , K. Allada , S. Allison , S. Alsalmi , D. Androic , K. Aniol , J. Annand , H. Atac , T. Averett , C. Ayerbe Gayoso , X. Bai , J. Bane , S. Barcus , K. Bartlett , V. Bellini , R. Beminiwattha , J. Bericic , D. Biswas , E. Brash , D. Bulumulla , J. Campbell , A. Camsonne , M. Carmignotto , J. Castellano , C. Chen , J-P. Chen , T. Chetry , M. E. Christy , E. Cisbani , B. Clary , E. Cohen , N. Compton , J. C. Cornejo , S. Covrig Dusa , B. Crowe , S. Danagoulian , T. Danley , F. De Persio , W. Deconinck , M. Defurne , C. Desnault , D. Di , M. Duer , B. Duran , R. Ent , C. Fanelli , G. Franklin , E. Fuchey , C. Gal , D. Gaskell , T. Gautam , O. Glamazdin , K. Gnanvo , V. M. Gray , C. Gu , T. Hague , G. Hamad , D. Hamilton , K. Hamilton , O. Hansen , F. Hauenstein , W. Henry , D. W. Higinbotham , T. Holmstrom , T. Horn , Y. Huang , G. M. Huber , C. Hyde , H. Ibrahim , C-M. Jen , K. Jin , M. Jones , A. Kabir , C. Keppel , V. Khachatryan , P. M. King , S. Li , W. Li , J. Liu , H. Liu , A. Liyanage , J. Magee , S. Malace , J. Mammei , P. Markowitz , E. McClellan , F. Meddi , D. Meekins , K. Mesik , R. Michaels , A. Mkrtchyan , R. Montgomery , C. Munoz Camacho , L. S. Myers , P. Nadel-Turonski , S. J. Nazeer , V. Nelyubin , D. Nguyen , N. Nuruzzaman , M. Nycz , O. F. Obretch , L. Ou , C. Palatchi , B. Pandey , S. Park , K. Park , C. Peng , R. Pomatsalyuk , E. Pooser , A. J. R. Puckett , V. Punjabi , B. Quinn , S. Rahman , P. E. Reimer , J. Roche , I. Sapkota , A. Sarty , B. Sawatzky , N. H. Saylor , B. Schmookler , M. H. Shabestari , A. Shahinyan , S. Sirca , G. R. Smith , S. Sooriyaarachchilage , N. Sparveris , R. Spies , T. Su , A. Subedi , V. Sulkosky , A. Sun , L. Thorne , Y. Tian , N. Ton , F. Tortorici , R. Trotta , G. M. Urciuoli , E. Voutier , B. Waidyawansa , Y. Wang , B. Wojtsekhowski , S. Wood , X. Yan , L. Ye , Z. Ye , C. Yero , J. Zhang , Y. Zhao , P. Zhu

Exclusive production of meson pairs and resonances in proton-proton collisions

We report a study of the central exclusive production of $\pi^{+} \pi^{-}$ and $K^{+}K^{-}$ pairs in high energy hadron-hadron collisions. The amplitude is calculated in the Regge approach including both pomeron and secondary reggeon…

High Energy Physics - Phenomenology · Physics 2013-05-29 Piotr Lebiedowicz , Antoni Szczurek

Cross sections and beam asymmetries for $\vev{e}p \to en\pi^+$ in the nucleon resonance region for $1.7 \le Q^2 \le 4.5 (GeV)^2$

The exclusive electroproduction process $\vec{e}p \to e^\prime n \pi^+$ was measured in the range of the photon virtuality $Q^2 = 1.7 - 4.5 \rm{GeV^2}$, and the invariant mass range for the $n\pi^+$ system of $W = 1.15 - 1.7 \rm{GeV}$ using…

Nuclear Experiment · Physics 2010-04-06 K. Park , V. D. Burkert , W. Kim , CLAS Collaboration

Exclusive ${\pi}^0$ electroproduction at $W>2$ GeV with CLAS

Exclusive neutral-pion electroproduction ($ep\to e^\prime p^\prime \pi^0$) was measured at Jefferson Lab with a 5.75-GeV electron beam and the CLAS detector. Differential cross sections $d^4\sigma/dtdQ^2dx_Bd\phi_\pi$ and structure…

Nuclear Experiment · Physics 2019-08-15 I. Bedlinskiy , V. Kubarovsky , S. Niccolai , P. Stoler , K. P. Adhikari , M. D. Anderson , S. Anefalos Pereira , H. Avakian , J. Ball , N. A. Baltzell , M. Battaglieri , V. Batourine , A. S. Biselli , S. Boiarinov , J. Bono , W. J. Briscoe , W. K. Brooks , V. D. Burkert , D. S. Carman , A. Celentano , S. Chandavar , L. Colaneri , P. L. Cole , M. Contalbrigo , O. Cortes , V. Crede , A. D'Angelo , N. Dashyan , R. De Vita , E. De Sanctis , A. Deur , C. Djalali , D. Doughty , R. Dupre , H. Egiyan , A. El Alaoui , L. El Fassi , L. Elouadrhiri , P. Eugenio , G. Fedotov , S. Fegan , J. A. Fleming , T. A. Forest , B. Garillon , M. Garçon , G. Gavalian , N. Gevorgyan , Y. Ghandilyan , G. P. Gilfoyle , K. L. Giovanetti , F. X. Girod , E. Golovatch , R. W. Gothe , K. A. Griffioen , B. Guegan , L. Guo , K. Hafidi , H. Hakobyan , N. Harrison , M. Hattawy , K. Hicks , M. Holtrop , D. G. Ireland , B. S. Ishkhanov , E. L. Isupov , D. Jenkins , H. S. Jo , K. Joo , D. Keller , M. Khandaker , A. Kim , W. Kim , A. Klein , F. J. Klein , S. Koirala , S. E. Kuhn , S. V. Kuleshov , P. Lenisa , W. I. Levine , K. Livingston , H. Y. Lu , I . J . D. MacGregor , N. Markov , M. Mayer , B. McKinnon , M. Mirazita , V. Mokeev , R. A. Montgomery , C. I. Moody , H. Moutarde , A Movsisyan , C. Munoz Camacho , P. Nadel-Turonski , I. Niculescu , M. Osipenko , A. I. Ostrovidov , L. L. Pappalardo , K. Park , S. Park , E. Pasyuk , E. Phelps , W. Phelps , J. J. Phillips , S. Pisano , O. Pogorelko , J. W. Price , Y. Prok , D. Protopopescu , S. Procureur , A. J. R. Puckett , B. A. Raue , M. Ripani , B. G. Ritchie , A. Rizzo , P. Rossi , P. Roy , F. Sabatié , C. Salgado , D. Schott , R. A. Schumacher , E. Seder , I. Senderovich , Y. G. Sharabian , A. Simonyan , G. D. Smith , D. I. Sober , D. Sokhan , S. S. Stepanyan , S. Strauch , V. Sytnik , W. Tang , Ye Tian , M. Ungaro , A. V. Vlassov , H. Voskanyan , E. Voutier , N. K. Walford , D. Watts , X. Wei , L. B. Weinstein , M. Yurov , N. Zachariou , L. Zana , J. Zhang , Z. W. Zhao , I. Zonta

Single pi+ Electroproduction on the Proton in the First and Second Resonance Regions at 0.25GeV^2 < Q^2 < 0.65GeV^2 Using CLAS

The ep -> e'pi^+n reaction was studied in the first and second nucleon resonance regions in the 0.25 GeV^2 < Q^2 < 0.65 GeV^2 range using the CLAS detector at Thomas Jefferson National Accelerator Facility. For the first time the absolute…

Nuclear Experiment · Physics 2010-04-06 H. Egiyan , I. G. Aznauryan , V. D. Burkert , K. A. Griffioen , K. Joo , R. Minehart , L. C. Smith , the CLAS Collaboration

Model Analysis of the $ep \to ep'\pi^+\pi^-$ Electroproduction Reaction on the Proton

Recent CLAS data on the $p\pi^+\pi^-$ electroproduction off protons at 1.3$<$W$<$1.57 GeV and 0.25$<$$Q^{2}$$<$0.6 GeV$^{2}$ have been analyzed using a meson-baryon phenomenological model. By fitting nine 1-fold differential cross section…

High Energy Physics - Phenomenology · Physics 2009-11-06 Viktor Mokeev , Volker Burkert , Tsung-Shung H. Lee , Latifa Elouadrhiri , Gleb Fedotov , Boris Ishkhanov

Photoproduction of $K^+K^-$ meson pairs on the proton

The exclusive reaction $\gamma p \to p K^+ K^-$ was studied in the photon energy range $3.0 - 3.8 \mbox{ GeV}$ and momentum transfer range $0.6<-t<1.3 \mbox{ GeV}^2$. Data were collected with the CLAS detector at the Thomas Jefferson…

High Energy Physics - Experiment · Physics 2018-10-03 S. Lombardo , M. Battaglieri , A. Celentano , A. D'Angelo , R. De Vita , A. Filippi , D. Glazier , S. M. Hughes , V. Mathieu , A. Rizzo , E. Santopinto , I. Stankovic , A. P. Szczepaniak , D. Watts , L. Zana , the CLAS Collaboration

Exclusive electroproduction of phi mesons at 4.2 GeV

We studied the exclusive reaction e p --> e' p' phi using the phi --> K^+ K^- decay mode. The data were collected using a 4.2 GeV incident electron beam and the CLAS detector at Jefferson Lab. Our experiment covers the range in Q^2 from 0.7…

High Energy Physics - Experiment · Physics 2010-04-06 CLAS Collaboration , K. Lukashin , E. S. Smith

Exclusive $\rho^0$ electroproduction on the proton at CLAS

The $e p\to e^\prime p \rho^0$ reaction has been measured, using the 5.754 GeV electron beam of Jefferson Lab and the CLAS detector. This represents the largest ever set of data for this reaction in the valence region. Integrated and…

High Energy Physics - Experiment · Physics 2012-08-27 CLAS collaboration

Photoproduction of the $\omega$ meson on the proton at large momentum transfer

The differential cross section, $d\sigma/dt$ for $\omega$ meson exclusive photoproduction on the proton above the resonance region ($2.6<W<2.9$ GeV) was measured up to a momentum transfer $-t = 5$ GeV$^2$ using the CLAS detector at…

High Energy Physics - Experiment · Physics 2010-04-06 M. Battaglieri , M. Brunoldi , R. De Vita , J. M. Laget , M. Osipenko , M. Ripani , M. Taiuti