Exclusive ϱ0 production in deep inelastic electron-proton scattering at HERA

Derrick, M.; Krakauer, D.; Magill, S.; Mikunas, D.; Musgrave, B.; Repond, J.; Stanek, R.; Talaga, R. L.; Zhang, H.; Ayad, R.; Bari, G.; Basile, M.; Bellagamba, L.; Boscherini, D.; Bruni, A.; Bruni, G.; Bruni, P.; Romeo, G. Cara; Castellini, G.; Chiarini, M.; Cifarelli, L.; Cindolo, F.; Contin, A.; Corradi, M.; Gialas, I.; Giusti, P.; Iacobucci, G.; Laurenti, G.; Levi, G.; Margotti, A.; Massam, T.; Nania, R.; Nemoz, C.; Palmonari, F.; Polini, A.; Sartorelli, G.; Timellini, R.; Garcia, Y. Zamora; Zichichi, A.; Bargende, A.; Crittenden, J.; Desch, K.; Diekmann, B.; Doeker, T.; Eckert, M.; Felď, L.; Frey, A.; Geerts, M.; Grothe, M.; Hartmann, H.; Héinloth, K.; Hilger, E.; Jakob, H.‐P.; Katz, U.; Mari, S. M.; Mengel, S.; Mollen, J.; Paul, E.; Pfeiffer, Mark; Rembser, C.; Schramm, David N.; Stamm, J.; Wedemeyer, R.; Campbell-Robson, S.; Cassidy, A.; Dyce, N.; Foster, B.; George, S.; Gilmore, R.; Heath, H. F.; Heath, H. F.; Llewellyn, T.J.; Morgado, Cjs; Norman, D.; Omara, Ja; Tapper, R. J.; Wilson, Stephen; Yoshida, R.; Rau, R. R.; Arneodo, M.; Capua, M.; Garfagnini, A.; Iannotti, L.; Schioppa, M.; Susinno, G.; Bernstein, Adam; Caldwell, A.; Cartiglia, N.; Parsons, J. A.; Ritz, S.; Sciulli, F.; Straub, P.B.; Wai, L.; Yang, S.; Zhu, Q. M.; Borzemski, P.; Chwastowski, J. J.; Eskreys, A.; Piotrzkowski, K.; Zachara, M.; Zawiejski, L.; Adamczyk, L.; Bednarek, B.; Jeleń, K.; Kisielewska, D.; Kowalski, T.; Rulikowska-Zarȩbska, E.; Suszycki, L.; Zając, Józef; Kotański, A.; Przybycień, M.; Bauerdick, L. A. T.; Behrens, U.; Beier, H.; Bienlein, J. K.; Coldewey, C.; Deppe, O.; Desler, K.; Drews, G.; Flasiński, Mariusz; Gilkinson, D. J.; Glasman, C.; Göttlicher, P.; Große-Knetter, J.; Gutjahr, B.; Haas, T.; Hain, W.; Hasell, D.; Heßling, H.; Iga, Y.; Johnson, K. F.; Joos, P.; Kasemann, M.; Klanner, R.; Koch, W.; Köpke, L.; Kötz, U.; Kowalski, H.; Labs, J.; Ladage, A.; Löhr, B.; Löwe, M.; Lüke, D.; Mainusch, J.; Mańczak, O.; Monteiro, T.; Ng, J. S. T.; Nickel, Stefan; Notz, D.; Ohrenberg, K.; Roco, M.; Rohde, M.; Roldán, J.; Schneekloth, U.; Schulz, W.; Selonke, F.; Stiliaris, E.; Surrow, B.; Voß, T.; Westphal, Douglas L.; Wolf, G.; Youngman, C.; Zeuner, Wolfram Dietrich; Zhou, J.; Grabosch, H. J.; Kharchilava, A.; Leich, A.; Mattingly, M.C.K.; Meyer, Andreas Bernhard; Schlenstedt, S.; Wulff, N.; Barbagli, G.; Pelfer, P. G.; Anzivino, G.; Maccarrone, G.; Pasquale, S. De; Votano, L.; Bamberger, A.; Eisenhardt, S.; Freidhof, A.; Söldner-Rembold, S.; Schroeder, J.; Trefzger, T.; Brook, N. H.; Bussey, P.; Doyle, A. T.; Fleck, J. I.; Saxon, D. H.; Utley, Martin; Wilson, A. S.; Dannemann, A.; Holm, U.; Horstmann, D.; Neumann, T.; Sinkus, Ralph; Wick, K.; Badura, E.; Burow, B.D.; Hagge, Lars; Lohrmann, E.; Milewski, J.; Nakahata, M.; Pavel, N.; Poelz, G.; Schott, W.; Zetsche, Frank; Bacon, T. C.; Bruemmer, N.; Butterworth, I.; Gallo, E.; Harris, V. L.; Hung, Byh; Long, K.; Miller, D. B.; Morawitz, P.; Prinias, A.; Sedgbeer, J. K.; Whitfield, A. F.; Mallik, U.; McCliment, E.; Wang, M.Z.; Wang, S.M.; Wu, J.; Cloth, P.; Filges, D.; An, S. H.; Hong, S.; Nam, S.; Park, S.K.; Suh, M. H.; Yon, S. H.; Imlay, R.; Kartik, S.; Kim, H.-J.; McNeil, R. R.; Metcalf, W.; Nadendla, V. K.; Barreiro, F.; Cases, G.; Fernández, J. P.; Graciani, R.; Hernández, J. M.; Hervás, L.; Labarga, L.; Martínez, M. Lucio; Peso, J. Del; Puga, J.; Terrón, J.; Trocóniz, J. F. de; Smith, G. R.; Corriveau, F.; Hanna, D.; Hartmann, J.; Hung, L. W.; Lim, J.; Matthews, C. G.; Patel, P. M.; Sinclair, L.E.; Stairs, D. G.; St.Laurent, M.; Ullmann, R.; Zacek, G.; Bashkirov, V.; Dolgoshein, B. A.; Stifutkin, A.; Bashindzhagyan, G. L.; Ermolov, P.; Gladilin, L. K.; Golubkov, Yu. A.; Kobrin, V. D.; Korzhavina, I. A.; Kurzhavina, V.A.; Kuzmin, V. A.; Lukina, O. Yu.; Proskuryakov, A.S.; Savin, A.A.; Shcheglova, L.M.; Solomin, A.; Zotov, N. P.; Botje, M.; Chlebana, F.; Dake, A.; Engelen, J.; Kamps, Marc de; Kooijman, P.; Kruse, A.; Tiecke, H.; Verkerke, W.; Veeswijk, M.; Wiggers, L.; Wolf, E. de; Woudenberg, R. van; Acosta, D.; Bylsma, B.; Durkin, L. S.; Honscheid, K.; Li, C.; Ling, T. Y.; McLean, K. W.; Murray, W. N.; Park, I.H.; Romanowski, T. A.; Seidlein, R.; Bailey, D. C.; Byrne, A.; Cashmore, R. J.; Cooper-Sarkar, A. M.; Devenish, R.C.E.; Harnew, N.; Lancaster, M.; Lindemann, Lars; McFall, J.D.; Nath, C.; Noyes, Va; Quadt, A.; Tickner, James; Uijterwaal, H.; Walczak, R.; Waters, D.; Wilson, F. F.; Yip, T.; Abbiendi, G.; Bertolin, A.; Brugnera, R.; Carlin, R.; Corso, F. Dal; Giorgi, M. De; Dosselli, U.; Limentani, S.; Morandin, M.; Posocco, M.; Stančo, L.; Stroili, R.; Voci, C.; Bulmahn, J.; Butterworth, J. M.; Feild, R. G.; Oh, B.Y.; Whitmore, J. J.; D’Agostini, G.; Marini, G.; Nigro, A.; Tassi, E.; Hart, J. C.; McCubbin, N. A.; Prytz, Kjell; Shah, T.; Short, T.L.; Barberis, E.; Dubbs, T.; Heusch, C. A.; Hook, M. Van; Lockman, W. S.; Rahn, J.; Sadrozinski, H. F-W.; Seiden, A.; Williams, D. C.; Biltzinger, J.; Seifert, R. J.; Schwarzer, O.; Walenta, A.H.; Zech, G.; Abramowicz, H.; Briskin, G.; Dagan, S.; Levy, A.; Hasegawa, T.; Hazumi, M.; Ishii, T.; Kuze, M.; Mine, S.; Nagasawa, Yutaka; Nakao, M.; Suzuki, I.; Tokushuku, K.; Yamada, S.; Yamazaki, Y.; Chiba, M.; Hamatsu, R.; Hirose, T.; Homma, K.; Kitamura, S.; Nakamitsu, Y.; Yamauchi, K.; Cirio, R.; Costa, M.; Ferrero, M. I.; Lamberti, Luciano; Maselli, S.; Peroni, C.; Sacchi, R.; Solano, A.; Staiano, A.; Dardo, M.; Bailey, D. C.; Bandyopadhyay, Debades; Bénard, F.; Brkić, M.; Gingrich, D. M.; Hartner, G.; Joo, K. K.; Levman, G.; Martin, J. F.; Orr, R. S.; Polenz, S.; Sampson, C. R.; Teuscher, R. J.; Catterall, C. D.; Jones, T. W.; Kaziewicz, P. B.; Lane, J.B.; Saunders, R. L.; Shulman, J.; Blankenship, Kevin; Lu, B.; Mo, L. W.; Bogusz, W.; Charchuła, K.; Ciborowski, J.; Gajewski, J.; Grzelak, G.; Kasprzak, M.; Krzyżanowski, M.; Muchorowski, K.; Nowak, R. J.; Pawlak, J. M.; Tymieniecka, T.; Wróblewski, A.; Zakrzewski, J.; Żarnecki, A. F.; Adamus, M.; Eisenberg, Y.; Karshon, U.; Revel, D.; Zer-Zion, D.; Ali, I.; Badgett, W.; Behrens, B. H.; Dasu, S.; Fordham, C.; Foudas, C.; Goussiou, A. G.; Loveless, R.; Reeder, D.; Silverstein, S.; Smith, W. H.; Vaiciulis, A.; Wodarczyk, M.; Tsurugai, T.; Bhadra, S.; Cardy, M. L.; Fagerstroem, C.-P.; Frisken, W. R.; Furutani, K.M.; Khakzad, M.; Schmidke, W. B.

doi:10.1016/0370-2693(95)00879-p

Cited by 67 publications

(28 citation statements)

References 33 publications

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“…Both calculations include the corrections due to intrinsic transverse momentum dependence as described in the text. The data are from NMC (triangles) [49], E665 (solid circles) [50], ZEUS 93 (open circles) [51] and ZEUS 95 (open squares) [52].…”

Section: Discussionmentioning

confidence: 99%

Deeply virtual electroproduction of photons and mesons on the nucleon: Leading order amplitudes and power corrections

1999

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We estimate the leading order amplitudes for exclusive photon and meson electroproduction reactions at large Q 2 in the valence region in terms of skewed quark distributions. As experimental investigations can currently only be envisaged at moderate values of Q 2 , we estimate power corrections due to the intrinsic transverse momentum of the partons in the meson wavefunction and in the nucleon. To this aim the skewed parton distribution formalism is generalized so as to include the parton intrinsic transverse momentum dependence. Furthermore, for the meson electroproduction reactions, we calculate the soft overlap type contributions and compare with the leading order amplitudes. We give first estimates for these different power corrections in kinematics which are relevant for experiments in the near future.

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Section: Discussionmentioning

confidence: 99%

Deeply virtual electroproduction of photons and mesons on the nucleon: Leading order amplitudes and power corrections

1999

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“…In the last step we made use of the diffractive properties of the vector meson cross section at GeV energies. For the slope factor of the diffractive ρ 0 production, we take β γρ = 6 (GeV/c) −2 [38,[42][43][44] and leave dσ d|t| 0 unspecified as it cancels in the nuclear transparency ratio T = σ A /Aσ N . Combining Eqs.…”

Section: E Cross Sectionmentioning

confidence: 99%

Nuclearρmeson transparency in a relativistic Glauber model

Cosyn

Ryckebusch

2013

Phys. Rev. C

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Background:The recent Jefferson Laboratory data for the nuclear transparency in ρ 0 electroproduction have the potential to settle the scale for the onset of color transparency (CT) in vector meson production. Purpose: To compare the data to calculations in a relativistic and quantum-mechanical Glauber model and to investigate whether they are in accordance with results including color transparency given that the computation of ρ-nucleus attenuations is subject to some uncertainties. Method: We compute the nuclear transparencies in a multiple-scattering Glauber model and account for effects stemming from color transparency, from ρ-meson decay, and from short-range correlations (SRC) in the final-state interactions (FSI). Results:The robustness of the model is tested by comparing the mass dependence and the hard-scale dependence of the A(e, e p) nuclear transparencies with the data. The hard-scale dependence of the (e, e ρ 0 ) nuclear transparencies for 12 C and 56 Fe are only moderately affected by SRC and by ρ 0 decay. Conclusions:The RMSGA calculations confirm the onset of CT at four-momentum transfers of a few (GeV/c) 2 in ρ meson electroproduction data. A more precise determination of the scale for the onset of CT is hampered by the lack of precise input in the FSI and ρ-meson decay calculations.

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“…The kinematic variables were reconstructed using the socalled 'constrained' method [46], which uses the momenta of the decay particles measured in the CTD and the reconstructed polar and azimuthal angles of the scattered electron. The analysis was restricted to the kinematic region 2 < Q 2 < 80 GeV 2 , 32 < W < 180 GeV, |t| ≤ 0.6 GeV 2 and 0.4 < M ππ < 2.5 GeV.…”

Section: Data Selection and Reconstructionmentioning

confidence: 99%

Exclusive electroproduction of two pions at HERA

Abramowicz¹,

Abt²,

Adamczyk³

et al. 2012

Eur. Phys. J. C

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The exclusive electroproduction of two pions in the mass range 0.4 < M ππ < 2.5 GeV has been studied with the ZEUS detector at HERA using an integrated luminosity of 82 pb −1 . The analysis was carried out in the kinematic range of 2 < Q 2 < 80 GeV 2 , 32 < W < 180 GeV and |t| < 0.6 GeV 2 , where Q 2 is the photon virtuality, W is the photon-proton centre-of-mass energy and t is the two-pion invariant-mass distribution is interpreted in terms of the pion electromagnetic form factor, |F (M ππ )|, assuming that the studied mass range includes the contributions of the ρ, ρ and ρ vector-meson states. The masses and widths of the resonances were obtained and the Q 2 dependence of the cross-section ratios σ (ρ → ππ)/σ (ρ) and σ (ρ → ππ)/σ (ρ) was extracted. The pion form factor obtained in the present analysis is compared to that obtained in e + e − → π + π − . a

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Exclusive ϱ0 production in deep inelastic electron-proton scattering at HERA

Cited by 67 publications

References 33 publications

Deeply virtual electroproduction of photons and mesons on the nucleon: Leading order amplitudes and power corrections

Deeply virtual electroproduction of photons and mesons on the nucleon: Leading order amplitudes and power corrections

Nuclearρmeson transparency in a relativistic Glauber model

Exclusive electroproduction of two pions at HERA

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