Electroproduction of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>ϕ</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>1020</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math>mesons at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>1</mml:mn><mml:mo>.</mml:mo><mml:mn>4</mml:mn><mml:mi>⩽</mml:mi><mml:msup><mml:mi>Q</mml:mi><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup><mml:mi>⩽</mml:mi><mml:mn>3</mml:

Santoro, J. P.; Smith, E. S.; Garçon, M.; Guidal, M.; Laget, J. M.; Weiß, Christian; Adams, G. S.; Amaryan, M. J.; Anghinolfi, M.; Asryan, G.; Audit, G.; Avakian, H.; Bagdasaryan, H.; Baillie, N.; Ball, J.; Baltzell, N. A.; Barrow, S.; Battaglieri, M.; Bedlinskiy, I.; Bektasoglu, M.; Bellis, M.; Benmouna, N.; Berman, B. L.; Biselli, A. S.; Blaszczyk, L.; Bonner, B. E.; Bookwalter, C.; Bouchigny, S.; Boiarinov, S.; Bradford, R.; Branford, D.; Briscoe, W. J.; Brooks, W. K.; Bültmann, S.; Burkert, Volker; Butuceanu, C.; Calarco, J. R.; Careccia, S. L.; Carman, D. S.; Casey, L.; Cazes, A.; Chen, S.; Cheng, Liang; Cole, P. L.; Collins, P.; Coltharp, P.; Cords, D.; Corvisiero, P.; Crabb, D.; Crannell, H.; Credé, V.; Cummings, J. P.; Dale, D.; Dashyan, N.; Masi, R. De; Sanctis, E. De; Vita, R. De; Degtyarenko, P. V.; Denizli, H.; Dennis, L.; Deur, A.; Dhamija, S.; Dharmawardane, K. V.; Dhuga, K. S.; Dickson, R.; Djalali, C.; Dodge, G. E.; Doughty, D.; Dugger, M.; Dytman, S.; Dzyubak, O. P.; Egiyan, H.; Egiyan, K. S.; Fassi, L. El; Elouadrhiri, L.; Eugenio, P.; Fatemi, R.; Fedotov, G.; Feuerbach, R. J.; Ficenec, J.; Forest, T. A.; Fradi, A.; Funsten, H. O.; Gavalian, G.; Gevorgyan, N.; Gilfoyle, G. P.; Giovanetti, K. L.; Girod, F. X.; Goetz, J. T.; Gohn, W.; Gordon, C. I O; Gothe, R. W.; Graham, L.; Griffioen, K. A.; Guillo, M.; Guler, N.; Guo, L.; Gyurjyan, V.; Hadjidakis, C.; Hafidi, K.; Hakobyan, H.; Hanretty, C.; Hardie, J.; Hassall, N.; Heddle, D.; Hersman, F. W.; Hicks, K.; Hleiqawi, I.; Holtrop, M.; Hyde‐Wright, C. E.; Ilieva, Y.; Ireland, D. G.; Ишханов, Б. С.; Isupov, E. L.; Ito, M. M.; Jenkins, D.; Jo, H. S.; Johnstone, J. R.; Joo, K. S.; Juengst, H. G.; Kalantarians, N.; Keller, D.; Kellie, J. D.; Khandaker, M.; Kim, W.; Klein, A.; Klein, F. J.; Klimenko, A. V.; Kossov, M.; Krahn, Z.; Kramer, L.; Kubarovsky, V.; Kühn, J.; Kuhn, S. E.; Kuleshov, S. V.; Kuznetsov, V.; Lachniet, J.; Langheinrich, J.; Lawrence, D.; Li, Ji; Livingston, K.; Lu, H. Y.; MacCormick, M.; Marchand, Claude; Markov, N.; Mattione, P.; McAleer, S.; McKinnon, B.; McNabb, J. W. C.; Mecking, B. A.; Mehrabyan, S.; Melone, J. J.; Mestayer, M. D.; Meyer, C. A.; Mibe, T.; Mikhailov, K.; Minehart, R.; Mirazita, M.; Miskimen, R.; Mokeev, V.; Morand, L.; Moreno, B.; Moriya, K.; Morrow, S. A.; Moteabbed, M.; Muêller, J.; Munévar, E.; Mutchler, G. S.; Nadel-Turoński, P.; Nasseripour, R.; Niccolai, S.; Niculescu, G.; Niculescu, I.; Niczyporuk, B. B.; Niroula, M. R.; Niyazov, R. A.; Nozar, M.; O’Rielly, G. V.; Osipenko, M.; Ostrovidov, A. I.; Park, K.; Park, S.; Pasyuk, E.; Paterson, C.; Pereira, S. Anefalos; Philips, S. A.; Pierce, J.; Pivnyuk, N.; Počanić, D.; Pogorelko, O.; Popa, I.; Pozdniakov, S.; Preedom, B. M.; Price, J. W.; Procureur, S.; Prok, Y.; Protopopescu, D.; Qin, L. M.; Raue, B. A.; Riccardi, G.; Ricco, G.; Ripani, M.; Ritchie, Barry; Rosner, G.; Rossi, P.; Sabatié, F.; Saini, M. S.; Salamanca, J.; Salgado, C.; Sapunenko, V.; Schott, D.; Schumacher, R. A.; Serov, V. S.; Sharabian, Y. G.; Sharov, D.; Shvedunov, N. V.; Skabelin, A. V.; Smith, L. C.; Sober, D. I.; Sokhan, D.; Stavinsky, A.; Stepanyan, S.; Stokes, B. E.; Stoler, P.; Strakovsky, I. I.; Strauch, S.; Taiuti, M.; Tedeschi, D. J.; Tkabladze, A.; Tkachenko, S.; Todor, L.; Tur, C.; Ungaro, M.; Vineyard, M. F.; Vlassov, A. V.; Watts, D. P.; Weinstein, L. B.; Weygand, D. P.; Williams, M.; Wolin, E.; Wood, M. H.; Yegneswaran, A.; Yurov, M.; Zana, L.; Zhang, J.; Zhao, B.; Zhao, Z. W.

doi:10.1103/physrevc.78.025210

Cited by 32 publications

(23 citation statements)

References 43 publications

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“…For light vector mesons, Q 2 ranges from Q 2 =0 GeV 2 up to 100 GeV 2 in the high W domain, where there are data from the H1 [33,34,35], ZEUS [36,37,38,39,40,41,42] and HERMES [43] (HERA) and E665 (Fermilab) [44] experiments. At low W , experiments at CORNELL [45] and with the CLAS detector at Jefferson Lab [46,47,48,49,50] have measured the ρ 0 , ω and φ electroproduction channels up to Q 2 =5 GeV 2 . For the heavy mesons, there are electroproduction data only for the J/Ψ from HERA [51,54]; otherwise, there are photoproduction data coming from the H1 [52], ZEUS [53], LHCb [55,56,57,58] and ALICE [59] experiments and a few fixed target data at low energies.…”

Section: The Parametrization Of the Gpdsmentioning

confidence: 99%

Deeply virtual meson production on the nucleon

et al. 2016

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Section: The Parametrization Of the Gpdsmentioning

confidence: 99%

Deeply virtual meson production on the nucleon

et al. 2016

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“…Teryaev et al [39] suggest that the so-called D term [40] which we neglect in our parametrization of the GPDs, may generate this effect. However, since the sharp drop of the cross section between 2 and 4 GeV is also seen in ρ + production [41] but not in the φ cross section [42] this explanation must be taken with care. In any case below about 3 GeV there seems to be an additional strong dynamical mechanism beyond our handbag approach and the pion pole.…”

Section: Partial Cross Sectionsmentioning

confidence: 99%

The pion pole in hard exclusive vector-meson leptoproduction

Goloskokov

Kroll

2014

Eur. Phys. J. A

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Exploiting a set of generalized parton distributions (GPDs) derived from analyses of hard exclusive leptoproduction of ρ 0 , φ and π + mesons, we investigate the ω spin density matrix elements (SDMEs) recently measured by the HERMES collaboration. It turns out from our study that the pion pole is an important contribution to ω production. It will be treated as a one-particle exchange since its evaluation from the GPD E considerably underestimates its contribution. As an intermediate step of our analysis we extract the πω transition form factor for photon virtualities less than 4 GeV 2 . From our approach we achieve results for the ω SDMEs in good agreement with the HERMES data. The role of the pion pole in exclusive ρ 0 and φ leptoproduction is discussed too. 1

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“…The latest version [7] of the two gluon exchange model also leads to a fair description of the sparse available data in the φ meson electro-production. Figure 21 shows the evolution of the total cross section with Q 2 in the HERA high energy range (< W >= 90 GeV), the HERMES intermediate energy range (< W >= 5 GeV ) and the JLab energy range [39] close to threshold (< W >= 2.4 GeV). Since the data correspond to a large bin in W , the curves correspond to the mean value and the two limits of the bin.…”

Section: Vector Mesons Electro-productionmentioning

confidence: 99%

Exclusive meson photo- and electro-production, a window on the structure of hadronic matter

Laget

2020

Progress in Particle and Nuclear Physics

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At high energy, exclusive meson photo-and electro-production give access to the structure of hadronic matter. At low momentum transfers, the exchange of a few Regge trajectories leads to a comprehensive account of the cross-sections. Among these trajectories, which are related to the mass spectrum of families of mesons, the Pomeron plays an interesting role as it is related to glue-ball excitations. At high momentum transfers, the exchange of these collective excitations is expected to reduce to the exchange of their simplest (quark or gluon) components. However, contribution from unitarity rescattering cuts are relevant even at high energies. In the JLab energy range, the asymptotic regime, where the players in the game are current quarks and massless gluons has not been reached yet. One has to rely on more effective degrees of freedom adapted to the scale of the probe. A consistent picture, the Partonic Non-Perturbative Regime, is emerging. The properties of its various components (dressed propagators, effective coupling constants, quark wave functions, shape of the Regge trajectories, etc..) provide us with various links to hadron properties. I will review the status of the field, will put in perspective the current achievements at JLab, SLAC and Hermes, and will assess future developments that are made possible by continuous electron beams at higher energies. The p(γ, φ)p reactionThis picture works best when the φ meson is emitted at the most forward angles (that drive the total cross section). At higher −t > 1 GeV 2 , the Pomeron exchange contribution falls down faster than the experimental data as can be seen in Figure 3. The data are better reproduced by modeling [5,6,2] the Pomeron in terms of the exchange of two gluons as depicted in Figure 4. When the two gluons couple to the same constituent quark in the nucleon (bottom part), the interference between their coupling to the same constituent quark or to different quarks in the φ meson induces a node in the cross section. This node disappears when the coupling to different correlated quarks in the nucleon is allowed (top part). The two gluon contribution matches the Pomeron contribution at the lowest −t, but provides more strength at high −t.It turns out that, in the high energy limit, the Pomeron and the two gluon amplitudes have the same functional form and the same structure at low −t. The treatment of the quark loop in the vector meson is the same in the two approaches. The Pomeron Regge pole drives the dynamics of its exchange. Since it is a perturbative-like calculation there is no Regge factor in the two gluon exchange amplitude:

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Electroproduction ofϕ(1020)mesons at1.4⩽Q2⩽3

Cited by 32 publications

References 43 publications

Deeply virtual meson production on the nucleon

Deeply virtual meson production on the nucleon

The pion pole in hard exclusive vector-meson leptoproduction

Exclusive meson photo- and electro-production, a window on the structure of hadronic matter

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