Results 101 to 110 of about 8,701 (188)

Exclusive pion electroproduction off nucleons and nuclei [PDF]

, 2011
We present our results for the exclusive electroproduction of pions off nucleons and nuclei at high values of $Q^2$. In electroproduction of nuclei $A(e,e'\pi)$ we consider the Color Transparency (CT) effect recently observed at JLAB.
Kaskulov, Murat M., Mosel, Ulrich
core  

The Wave Function of 2S Radially Excited Vector Mesons from Data for Diffraction Slope

, 2000
In the color dipole gBFKL dynamics we predict a strikingly different Q^2 and energy dependence of the diffraction slope for the elastic production of ground state V(1S) and radially excited V'(2S) light vector mesons.
A. Donnachie, A. Schiz, B. Z. Kopeliovich, B. Z. Kopeliovich, B. Z. Kopeliovich, C. Adloff, C. Berger, D. Aston, D. Aston, D. P. Barber, E. Gotsman, G. E. Gladding, H. J. Behrend, H. J. Bersh, I. Abt, J. B. Kogut, J. Ballam, J. Ballam, J. Breitweg, J. Breitweg, J. Breitweg, J. Breitweg, J. Busenitz, J. Nemchik, J. Nemchik, J. Nemchik, J. Nemchik, J. Nemchik, J. Nemchik, J. Nemchik, J. P. Burq, J. Pumplin, J. R. Cuddell, J. R. Forshaw, M. Arneodo, M. Atkinson, M. Derrick, M. Derrick, M. Derrick, M. Derrick, M. G. Ryskin, M. R. Adams, N. N. Nikolaev, N. N. Nikolaev, N. N. Nikolaev, N. N. Nikolaev, N. N. Nikolaev, N. N. Nikolaev, N. N. Nikolaev, N. N. Nikolaev, N. N. Nikolaev, N. Nikolaev, N. Nikolaev, O. Benhar, O. Benhar, P. Söding, R. Erbe, S. Aid, S. Aid, S. J. Brodsky, T. Ahmed, T. Ahmed, V. N. Gribov, W. D. Shambroom, W. G. Jones   +64 more
core   +1 more source

Electroproductions of Light  - and  -Hypernuclei [PDF]

Progress of Theoretical Physics, 1994
Theoretical estimations of production cross sections of light $ $ and $ $ hypernuclei in $(e,e'K^{+})$ reactions at around CEBAF energies are given. Because of dominant spin-flip amplitudes and large momentum transfers, unnatural parity states and stretched states of hypernuclei are favorably excited.
openaire   +1 more source

Configurational entropy and ρ and ϕ mesons production in QCD

Physics Letters B, 2018
In the present work the electroproduction for diffractive ρ and ϕ mesons by considering AdS/QCD correspondence and Color Glass Condensate (CGC) approximation are studied with respect to the associated dipole cross section, whose parameters are studied ...
G. Karapetyan
doaj   +1 more source

Two pion electroproduction

, 2000
4 pages, 2 figures, Talk given at Meson 2000 Workshop, Krakow, Poland, 19-23 May ...
Nácher Díez, José Carlos, Oset Báguena, Eulogio   +1 more
openaire   +3 more sources

Electroproduction of lightest nucleon resonances up to Q*2=12 GeV*2 in quark models at light front

EPJ Web of Conferences, 2017
The lightest nucleon resonances are described at light front as mixed states of the 3q cluster (“quark core”) possessing a definite value of the inner orbital momentum L = 0,1 and a hadron molecular state, N+σ or Λ+K. Helicity amplitudes of the resonance
Obukhovsky I.T., Faessler A., Gutsche Th., Fedorov D.K., Lyubovitskij V.E.   +4 more
doaj   +1 more source

Hard exclusive pion electroproduction at backward angles with CLAS

Physics Letters B, 2018
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.
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   +121 more
doaj   +1 more source

Ratios of helicity amplitudes for exclusive ρ0 electroproduction

European Physical Journal C: Particles and Fields, 2011
Exclusive ρ 0-meson electroproduction is studied in the HERMES experiment, using a 27.6 GeV longitudinally polarized electron/positron beam and unpolarized hydrogen and deuterium targets in the kinematic region 0.5 ...
The HERMES Collaboration, A. Airapetian, N. Akopov, Z. Akopov, E. C. Aschenauer, W. Augustyniak, R. Avakian, A. Avetissian, E. Avetisyan, S. Belostotski, N. Bianchi, H. P. Blok, A. Borissov, J. Bowles, V. Bryzgalov, J. Burns, M. Capiluppi, G. P. Capitani, E. Cisbani, G. Ciullo, M. Contalbrigo, P. F. Dalpiaz, W. Deconinck, R. De Leo, L. De Nardo, E. De Sanctis, M. Diefenthaler, P. Di Nezza, M. Düren, M. Ehrenfried, G. Elbakian, F. Ellinghaus, R. Fabbri, A. Fantoni, L. Felawka, S. Frullani, D. Gabbert, G. Gapienko, V. Gapienko, F. Garibaldi, G. Gavrilov, V. Gharibyan, F. Giordano, S. Gliske, M. Golembiovskaya, C. Hadjidakis, M. Hartig, D. Hasch, G. Hill, A. Hillenbrand, M. Hoek, Y. Holler, I. Hristova, Y. Imazu, A. Ivanilov, H. E. Jackson, H. S. Jo, S. Joosten, R. Kaiser, G. Karyan, T. Keri, E. Kinney, A. Kisselev, N. Kobayashi, V. Korotkov, V. Kozlov, P. Kravchenko, V. G. Krivokhijine, L. Lagamba, R. Lamb, L. Lapikás, I. Lehmann, P. Lenisa, L. A. Linden-Levy, A. López Ruiz, W. Lorenzon, X.-G. Lu, X.-R. Lu, B.-Q. Ma, D. Mahon, N. C. R. Makins, S. I. Manaenkov, L. Manfré, Y. Mao, B. Marianski, A. Martinez de la Ossa, H. Marukyan, C. A. Miller, Y. Miyachi, A. Movsisyan, V. Muccifora, M. Murray, A. Mussgiller, E. Nappi, Y. Naryshkin, A. Nass, M. Negodaev, W.-D. Nowak, L. L. Pappalardo, R. Perez-Benito, N. Pickert, P. E. Reimer, A. R. Reolon, C. Riedl, K. Rith, G. Rosner, A. Rostomyan, J. Rubin, D. Ryckbosch, Y. Salomatin, F. Sanftl, A. Schäfer, G. Schnell, K. P. Schüler, B. Seitz, T.-A. Shibata, V. Shutov, M. Stancari, M. Statera, E. Steffens, J. J. M. Steijger, F. Stinzing, S. Taroian, A. Terkulov, A. Trzcinski, M. Tytgat, A. Vandenbroucke, Y. Van Haarlem, C. Van Hulse, D. Veretennikov, V. Vikhrov, I. Vilardi, S. Wang, S. Yaschenko, S. Yen, W. Yu, B. Zihlmann, P. Zupranski   +137 more
doaj   +1 more source

Two Photon Exchange for Exclusive Pion Electroproduction

, 2012
We perform detailed calculations of two-photon-exchange QED corrections to the cross section of pion electroproduction. The results are obtained with and without the soft-photon approximation; analytic expressions for the radiative corrections are ...
Afanasev, A., Aleksejevs, A., Barkanova, S.   +2 more
core   +1 more source

EXCLUSIVE VECTOR MESON ELECTROPRODUCTION @ CLAS [PDF]

Exclusive Reactions at High Momentum Transfer IV, 2011
We present the results of exclusive electroproduction of vector mesons on the proton at CLAS. We discuss the interpretation of these cross sections in terms of t-channel Reggeon exchanges and in terms of Generalized Parton Distributions (GPDs) formalism.
openaire   +2 more sources