Exclusive leptoproduction of ρ0 mesons from hydrogen at intermediate virtual photon energies

A. Airapetian; N. Akopov; I. Akushevich; M. Amarian; J. Arrington; E. C. Aschenauer; H. Avakian; R. Avakian; A. Avetissian; E. Avetissian; P. Bailey; B. Bains; C. Baumgarten; M. Beckmann; S. Belostotski; S. Bernreuther; N. Bianchi; H. Böttcher; A. Borissov; M. Bouwhuis; J. Brack; S. Brauksiepe; B. Braun; W. Brückner; A. Briill; P. Budz; H. J. Bulten; G. P. Capitani; P. Carter; P. Chumney; E. Cisbani; G. R. Court; P. F. Dalpiaz; R. De Leo; L. De Nardo; E. De Sanctis; D. De Schepper; E. Devitsin; P. K.A. de Witt Huberts; P. Di Nezza; V. Djordjadze; M. Duren; A. Dvoredsky; G. Elbakian; J. Ely; A. Fantoni; A. Fechtchenko; M. Ferro-Luzzi; K. Fiedler; B. W. Filippone; H. Fischer; B. Fox; J. Franz; S. Frullani; Y. Garber; F. Garibaldi; E. Garutti; G. Gavrilov; V. Gharibyan; A. Golendukhin; G. Graw; O. Grebeniouk; P. W. Green; L. G. Greeniaus; A. Gute; W. Haeberli; M. Hartig; D. Hasch; D. Heesbeen; F. H. Heinsius; M. Henoch; R. Hertenberger; W. H.A. Hesselink; P. Hoffmann-Rothe; G. Hofman; Y. Holler; R. J. Holt; B. Hommez; W. Hoprich; G. Iarygin; H. Ihssen; M. Iodice; A. Izotov; H. E. Jackson; A. Jgoun; R. Kaiser; J. Kanesaka; E. Kinney; A. Kisselev; P. Kitching; H. Kobayashi; N. Koch; K. Konigsmann; M. Kolstein; H. Kolster; V. Korotkov; E. Kotik; V. Kozlov; V. G. Krivokhijine; G. Kyle; L. Lagamba; A. Laziev; P. Lenisa; T. Lindemann; W. Lorenzon; N. C.R. Makins; J. W. Martin; H. Marukyan; F. Masoli; M. McAndrew; K. Mcllhany; R. D. McKeown; F. Meissner; F. Menden; A. Metz; N. Meyners; O. Mikloukho; C. A. Miller; R. Milner; V. Mitsyn; V. Muccifora; R. Mussa; A. Nagaitsev; E. Nappi; Y. Naryshkin; A. Nass; W. D. Nowak; T. G. O'Neill; R. Openshaw; J. Ouyang; B. R. Owen; S. F. Pate; S. Potashov; D. H. Potterveld; G. Rakness; R. Redwine; D. Reggiani; A. R. Reolon; R. Ristinen; K. Rith; D. Robinson; M. Ruh; D. Ryckbosch; Y. Sakemi; I. Savin; C. Scarlett; C. Schill; F. Schmidt; M. Schmitt; G. Schnell; K. P. Schüler; A. Schwind; J. Seibert; T. A. Shibata; T. Shin; C. Simani; A. Simon; K. Sinram; E. Steffens; J. J.M. Steijger; J. Stewart; U. Stösslein; K. Suetsugu; M. Sutter; H. Tallini; A. Terkulov; S. Tessarin; E. Thomas; B. Tipton; M. Tytgat; G. M. Urciuoli; J. F.J. van den Brand; G. van der Steenhoven; R. van de Vyver; J. J. van Hunen; M. C. Vetterli; V. Vikhrov; M. G. Vincter; J. Visser; E. Volk; C. Weiskopf; J. Wendland; J. Wilbert; T. Wise; K. Woller; S. Yoneyama; H. Zohrabian

doi:10.1007/s100520000483

Exclusive leptoproduction of ρ⁰ mesons from hydrogen at intermediate virtual photon energies

A. Airapetian, N. Akopov, I. Akushevich, M. Amarian, J. Arrington, E. C. Aschenauer, H. Avakian, R. Avakian, A. Avetissian, E. Avetissian, P. Bailey, B. Bains, C. Baumgarten, M. Beckmann, S. Belostotski, S. Bernreuther, N. Bianchi, H. Böttcher, A. Borissov, M. BouwhuisJ. Brack, S. Brauksiepe, B. Braun, W. Brückner, A. Briill, P. Budz, H. J. Bulten, G. P. Capitani, P. Carter, P. Chumney, E. Cisbani, G. R. Court, P. F. Dalpiaz, R. De Leo, L. De Nardo, E. De Sanctis, D. De Schepper, E. Devitsin, P. K.A. de Witt Huberts, P. Di Nezza, V. Djordjadze, M. Duren, A. Dvoredsky, G. Elbakian, J. Ely, A. Fantoni, A. Fechtchenko, M. Ferro-Luzzi, K. Fiedler, B. W. Filippone, H. Fischer, B. Fox, J. Franz, S. Frullani, Y. Garber, F. Garibaldi, E. Garutti, G. Gavrilov, V. Gharibyan, A. Golendukhin, G. Graw, O. Grebeniouk, P. W. Green, L. G. Greeniaus, A. Gute, W. Haeberli, M. Hartig, D. Hasch, D. Heesbeen, F. H. Heinsius, M. Henoch, R. Hertenberger, W. H.A. Hesselink, P. Hoffmann-Rothe, G. Hofman, Y. Holler, R. J. Holt, B. Hommez, W. Hoprich, G. Iarygin, H. Ihssen, M. Iodice, A. Izotov, H. E. Jackson, A. Jgoun, R. Kaiser, J. Kanesaka, E. Kinney, A. Kisselev, P. Kitching, H. Kobayashi, N. Koch, K. Konigsmann, M. Kolstein, H. Kolster, V. Korotkov, E. Kotik, V. Kozlov, V. G. Krivokhijine, G. Kyle, L. Lagamba, A. Laziev, P. Lenisa, T. Lindemann, W. Lorenzon, N. C.R. Makins, J. W. Martin, H. Marukyan, F. Masoli, M. McAndrew, K. Mcllhany, R. D. McKeown, F. Meissner, F. Menden, A. Metz, N. Meyners, O. Mikloukho, C. A. Miller, R. Milner, V. Mitsyn, V. Muccifora, R. Mussa, A. Nagaitsev, E. Nappi, Y. Naryshkin, A. Nass, W. D. Nowak, T. G. O'Neill, R. Openshaw, J. Ouyang, B. R. Owen, S. F. Pate, S. Potashov, D. H. Potterveld, G. Rakness, R. Redwine, D. Reggiani, A. R. Reolon, R. Ristinen, K. Rith, D. Robinson, M. Ruh, D. Ryckbosch, Y. Sakemi, I. Savin, C. Scarlett, C. Schill, F. Schmidt, M. Schmitt, G. Schnell, K. P. Schüler, A. Schwind, J. Seibert, T. A. Shibata, T. Shin, C. Simani, A. Simon, K. Sinram, E. Steffens, J. J.M. Steijger, J. Stewart, U. Stösslein, K. Suetsugu, M. Sutter, H. Tallini, A. Terkulov, S. Tessarin, E. Thomas, B. Tipton, M. Tytgat, G. M. Urciuoli, J. F.J. van den Brand, G. van der Steenhoven, R. van de Vyver, J. J. van Hunen, M. C. Vetterli, V. Vikhrov, M. G. Vincter, J. Visser, E. Volk, C. Weiskopf, J. Wendland, J. Wilbert, T. Wise, K. Woller, S. Yoneyama, H. Zohrabian

Research output: Contribution to journal › Article › peer-review

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Abstract

Measurements of the cross section for exclusive virtual-photoproduction of ρ⁰ mesons from hydrogen are reported. The data were collected by the HERMES experiment using 27.5 GeV positrons incident on a hydrogen gas target in the HERA storage ring. The invariant mass W of the photon-nucleon system ranges from 4.0 to 6.0 GeV, while the negative squared four-momentum Q² of the virtual photon varies from 0.7 to 5.0 GeV². The present data together with most of the previous data in the intermediate W-domain are well described by a model that infers the W-dependence of the cross section from the dependence on the Bjorken scaling variable cursive Greek chi of the unpolarized structure function for deep-inelastic scattering. In addition, a model calculation based on Off-Forward Parton Distributions gives a fairly good account of the longitudinal component of the ρ⁰ production cross section for Q² > 2 GeV².

Original language	English
Pages (from-to)	389-398
Number of pages	10
Journal	European Physical Journal C
Volume	17
Issue number	3
DOIs	https://doi.org/10.1007/s100520000483
Publication status	Published - 2000
Externally published	Yes

ASJC Scopus subject areas

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

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10.1007/s100520000483

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Airapetian, A., Akopov, N., Akushevich, I., Amarian, M., Arrington, J., Aschenauer, E. C., Avakian, H., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Bains, B., Baumgarten, C., Beckmann, M., Belostotski, S., Bernreuther, S., Bianchi, N., Böttcher, H., Borissov, A., ... Zohrabian, H. (2000). Exclusive leptoproduction of ρ⁰ mesons from hydrogen at intermediate virtual photon energies. European Physical Journal C, 17(3), 389-398. https://doi.org/10.1007/s100520000483

Airapetian, A, Akopov, N, Akushevich, I, Amarian, M, Arrington, J, Aschenauer, EC, Avakian, H, Avakian, R, Avetissian, A, Avetissian, E, Bailey, P, Bains, B, Baumgarten, C, Beckmann, M, Belostotski, S, Bernreuther, S, Bianchi, N, Böttcher, H, Borissov, A, Bouwhuis, M, Brack, J, Brauksiepe, S, Braun, B, Brückner, W, Briill, A, Budz, P, Bulten, HJ, Capitani, GP, Carter, P, Chumney, P, Cisbani, E, Court, GR, Dalpiaz, PF, De Leo, R, De Nardo, L, De Sanctis, E, De Schepper, D, Devitsin, E, de Witt Huberts, PKA, Di Nezza, P, Djordjadze, V, Duren, M, Dvoredsky, A, Elbakian, G, Ely, J, Fantoni, A, Fechtchenko, A, Ferro-Luzzi, M, Fiedler, K, Filippone, BW, Fischer, H, Fox, B, Franz, J, Frullani, S, Garber, Y, Garibaldi, F, Garutti, E, Gavrilov, G, Gharibyan, V, Golendukhin, A, Graw, G, Grebeniouk, O, Green, PW, Greeniaus, LG, Gute, A, Haeberli, W, Hartig, M, Hasch, D, Heesbeen, D, Heinsius, FH, Henoch, M, Hertenberger, R, Hesselink, WHA, Hoffmann-Rothe, P, Hofman, G, Holler, Y, Holt, RJ, Hommez, B, Hoprich, W, Iarygin, G, Ihssen, H, Iodice, M, Izotov, A, Jackson, HE, Jgoun, A, Kaiser, R, Kanesaka, J, Kinney, E, Kisselev, A, Kitching, P, Kobayashi, H, Koch, N, Konigsmann, K, Kolstein, M, Kolster, H, Korotkov, V, Kotik, E, Kozlov, V, Krivokhijine, VG, Kyle, G, Lagamba, L, Laziev, A, Lenisa, P, Lindemann, T, Lorenzon, W, Makins, NCR, Martin, JW, Marukyan, H, Masoli, F, McAndrew, M, Mcllhany, K, McKeown, RD, Meissner, F, Menden, F, Metz, A, Meyners, N, Mikloukho, O, Miller, CA, Milner, R, Mitsyn, V, Muccifora, V, Mussa, R, Nagaitsev, A, Nappi, E, Naryshkin, Y, Nass, A, Nowak, WD, O'Neill, TG, Openshaw, R, Ouyang, J, Owen, BR, Pate, SF, Potashov, S, Potterveld, DH, Rakness, G, Redwine, R, Reggiani, D, Reolon, AR, Ristinen, R, Rith, K, Robinson, D, Ruh, M, Ryckbosch, D, Sakemi, Y, Savin, I, Scarlett, C, Schill, C, Schmidt, F, Schmitt, M, Schnell, G, Schüler, KP, Schwind, A, Seibert, J, Shibata, TA, Shin, T, Simani, C, Simon, A, Sinram, K, Steffens, E, Steijger, JJM, Stewart, J, Stösslein, U, Suetsugu, K, Sutter, M, Tallini, H, Terkulov, A, Tessarin, S, Thomas, E, Tipton, B, Tytgat, M, Urciuoli, GM, van den Brand, JFJ, van der Steenhoven, G, van de Vyver, R, van Hunen, JJ, Vetterli, MC, Vikhrov, V, Vincter, MG, Visser, J, Volk, E, Weiskopf, C, Wendland, J, Wilbert, J, Wise, T, Woller, K, Yoneyama, S & Zohrabian, H 2000, 'Exclusive leptoproduction of ρ⁰ mesons from hydrogen at intermediate virtual photon energies', European Physical Journal C, vol. 17, no. 3, pp. 389-398. https://doi.org/10.1007/s100520000483

@article{c2b2b30639d64abbacd4b72636c066e4,

title = "Exclusive leptoproduction of ρ0 mesons from hydrogen at intermediate virtual photon energies",

abstract = "Measurements of the cross section for exclusive virtual-photoproduction of ρ0 mesons from hydrogen are reported. The data were collected by the HERMES experiment using 27.5 GeV positrons incident on a hydrogen gas target in the HERA storage ring. The invariant mass W of the photon-nucleon system ranges from 4.0 to 6.0 GeV, while the negative squared four-momentum Q2 of the virtual photon varies from 0.7 to 5.0 GeV2. The present data together with most of the previous data in the intermediate W-domain are well described by a model that infers the W-dependence of the cross section from the dependence on the Bjorken scaling variable cursive Greek chi of the unpolarized structure function for deep-inelastic scattering. In addition, a model calculation based on Off-Forward Parton Distributions gives a fairly good account of the longitudinal component of the ρ0 production cross section for Q2 > 2 GeV2.",

author = "A. Airapetian and N. Akopov and I. Akushevich and M. Amarian and J. Arrington and Aschenauer, {E. C.} and H. Avakian and R. Avakian and A. Avetissian and E. Avetissian and P. Bailey and B. Bains and C. Baumgarten and M. Beckmann and S. Belostotski and S. Bernreuther and N. Bianchi and H. B{\"o}ttcher and A. Borissov and M. Bouwhuis and J. Brack and S. Brauksiepe and B. Braun and W. Br{\"u}ckner and A. Briill and P. Budz and Bulten, {H. J.} and Capitani, {G. P.} and P. Carter and P. Chumney and E. Cisbani and Court, {G. R.} and Dalpiaz, {P. F.} and {De Leo}, R. and {De Nardo}, L. and {De Sanctis}, E. and {De Schepper}, D. and E. Devitsin and {de Witt Huberts}, {P. K.A.} and {Di Nezza}, P. and V. Djordjadze and M. Duren and A. Dvoredsky and G. Elbakian and J. Ely and A. Fantoni and A. Fechtchenko and M. Ferro-Luzzi and K. Fiedler and Filippone, {B. W.} and H. Fischer and B. Fox and J. Franz and S. Frullani and Y. Garber and F. Garibaldi and E. Garutti and G. Gavrilov and V. Gharibyan and A. Golendukhin and G. Graw and O. Grebeniouk and Green, {P. W.} and Greeniaus, {L. G.} and A. Gute and W. Haeberli and M. Hartig and D. Hasch and D. Heesbeen and Heinsius, {F. H.} and M. Henoch and R. Hertenberger and Hesselink, {W. H.A.} and P. Hoffmann-Rothe and G. Hofman and Y. Holler and Holt, {R. J.} and B. Hommez and W. Hoprich and G. Iarygin and H. Ihssen and M. Iodice and A. Izotov and Jackson, {H. E.} and A. Jgoun and R. Kaiser and J. Kanesaka and E. Kinney and A. Kisselev and P. Kitching and H. Kobayashi and N. Koch and K. Konigsmann and M. Kolstein and H. Kolster and V. Korotkov and E. Kotik and V. Kozlov and Krivokhijine, {V. G.} and G. Kyle and L. Lagamba and A. Laziev and P. Lenisa and T. Lindemann and W. Lorenzon and Makins, {N. C.R.} and Martin, {J. W.} and H. Marukyan and F. Masoli and M. McAndrew and K. Mcllhany and McKeown, {R. D.} and F. Meissner and F. Menden and A. Metz and N. Meyners and O. Mikloukho and Miller, {C. A.} and R. Milner and V. Mitsyn and V. Muccifora and R. Mussa and A. Nagaitsev and E. Nappi and Y. Naryshkin and A. Nass and Nowak, {W. D.} and O'Neill, {T. G.} and R. Openshaw and J. Ouyang and Owen, {B. R.} and Pate, {S. F.} and S. Potashov and Potterveld, {D. H.} and G. Rakness and R. Redwine and D. Reggiani and Reolon, {A. R.} and R. Ristinen and K. Rith and D. Robinson and M. Ruh and D. Ryckbosch and Y. Sakemi and I. Savin and C. Scarlett and C. Schill and F. Schmidt and M. Schmitt and G. Schnell and Sch{\"u}ler, {K. P.} and A. Schwind and J. Seibert and Shibata, {T. A.} and T. Shin and C. Simani and A. Simon and K. Sinram and E. Steffens and Steijger, {J. J.M.} and J. Stewart and U. St{\"o}sslein and K. Suetsugu and M. Sutter and H. Tallini and A. Terkulov and S. Tessarin and E. Thomas and B. Tipton and M. Tytgat and Urciuoli, {G. M.} and {van den Brand}, {J. F.J.} and {van der Steenhoven}, G. and {van de Vyver}, R. and {van Hunen}, {J. J.} and Vetterli, {M. C.} and V. Vikhrov and Vincter, {M. G.} and J. Visser and E. Volk and C. Weiskopf and J. Wendland and J. Wilbert and T. Wise and K. Woller and S. Yoneyama and H. Zohrabian",

year = "2000",

doi = "10.1007/s100520000483",

language = "English",

volume = "17",

pages = "389--398",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer New York",

number = "3",

}

TY - JOUR

T1 - Exclusive leptoproduction of ρ0 mesons from hydrogen at intermediate virtual photon energies

AU - Airapetian, A.

AU - Akopov, N.

AU - Akushevich, I.

AU - Amarian, M.

AU - Arrington, J.

AU - Aschenauer, E. C.

AU - Avakian, H.

AU - Avakian, R.

AU - Avetissian, A.

AU - Avetissian, E.

AU - Bailey, P.

AU - Bains, B.

AU - Baumgarten, C.

AU - Beckmann, M.

AU - Belostotski, S.

AU - Bernreuther, S.

AU - Bianchi, N.

AU - Böttcher, H.

AU - Borissov, A.

AU - Bouwhuis, M.

AU - Brack, J.

AU - Brauksiepe, S.

AU - Braun, B.

AU - Brückner, W.

AU - Briill, A.

AU - Budz, P.

AU - Bulten, H. J.

AU - Capitani, G. P.

AU - Carter, P.

AU - Chumney, P.

AU - Cisbani, E.

AU - Court, G. R.

AU - Dalpiaz, P. F.

AU - De Leo, R.

AU - De Nardo, L.

AU - De Sanctis, E.

AU - De Schepper, D.

AU - Devitsin, E.

AU - de Witt Huberts, P. K.A.

AU - Di Nezza, P.

AU - Djordjadze, V.

AU - Duren, M.

AU - Dvoredsky, A.

AU - Elbakian, G.

AU - Ely, J.

AU - Fantoni, A.

AU - Fechtchenko, A.

AU - Ferro-Luzzi, M.

AU - Fiedler, K.

AU - Filippone, B. W.

AU - Fischer, H.

AU - Fox, B.

AU - Franz, J.

AU - Frullani, S.

AU - Garber, Y.

AU - Garibaldi, F.

AU - Garutti, E.

AU - Gavrilov, G.

AU - Gharibyan, V.

AU - Golendukhin, A.

AU - Graw, G.

AU - Grebeniouk, O.

AU - Green, P. W.

AU - Greeniaus, L. G.

AU - Gute, A.

AU - Haeberli, W.

AU - Hartig, M.

AU - Hasch, D.

AU - Heesbeen, D.

AU - Heinsius, F. H.

AU - Henoch, M.

AU - Hertenberger, R.

AU - Hesselink, W. H.A.

AU - Hoffmann-Rothe, P.

AU - Hofman, G.

AU - Holler, Y.

AU - Holt, R. J.

AU - Hommez, B.

AU - Hoprich, W.

AU - Iarygin, G.

AU - Ihssen, H.

AU - Iodice, M.

AU - Izotov, A.

AU - Jackson, H. E.

AU - Jgoun, A.

AU - Kaiser, R.

AU - Kanesaka, J.

AU - Kinney, E.

AU - Kisselev, A.

AU - Kitching, P.

AU - Kobayashi, H.

AU - Koch, N.

AU - Konigsmann, K.

AU - Kolstein, M.

AU - Kolster, H.

AU - Korotkov, V.

AU - Kotik, E.

AU - Kozlov, V.

AU - Krivokhijine, V. G.

AU - Kyle, G.

AU - Lagamba, L.

AU - Laziev, A.

AU - Lenisa, P.

AU - Lindemann, T.

AU - Lorenzon, W.

AU - Makins, N. C.R.

AU - Martin, J. W.

AU - Marukyan, H.

AU - Masoli, F.

AU - McAndrew, M.

AU - Mcllhany, K.

AU - McKeown, R. D.

AU - Meissner, F.

AU - Menden, F.

AU - Metz, A.

AU - Meyners, N.

AU - Mikloukho, O.

AU - Miller, C. A.

AU - Milner, R.

AU - Mitsyn, V.

AU - Muccifora, V.

AU - Mussa, R.

AU - Nagaitsev, A.

AU - Nappi, E.

AU - Naryshkin, Y.

AU - Nass, A.

AU - Nowak, W. D.

AU - O'Neill, T. G.

AU - Openshaw, R.

AU - Ouyang, J.

AU - Owen, B. R.

AU - Pate, S. F.

AU - Potashov, S.

AU - Potterveld, D. H.

AU - Rakness, G.

AU - Redwine, R.

AU - Reggiani, D.

AU - Reolon, A. R.

AU - Ristinen, R.

AU - Rith, K.

AU - Robinson, D.

AU - Ruh, M.

AU - Ryckbosch, D.

AU - Sakemi, Y.

AU - Savin, I.

AU - Scarlett, C.

AU - Schill, C.

AU - Schmidt, F.

AU - Schmitt, M.

AU - Schnell, G.

AU - Schüler, K. P.

AU - Schwind, A.

AU - Seibert, J.

AU - Shibata, T. A.

AU - Shin, T.

AU - Simani, C.

AU - Simon, A.

AU - Sinram, K.

AU - Steffens, E.

AU - Steijger, J. J.M.

AU - Stewart, J.

AU - Stösslein, U.

AU - Suetsugu, K.

AU - Sutter, M.

AU - Tallini, H.

AU - Terkulov, A.

AU - Tessarin, S.

AU - Thomas, E.

AU - Tipton, B.

AU - Tytgat, M.

AU - Urciuoli, G. M.

AU - van den Brand, J. F.J.

AU - van der Steenhoven, G.

AU - van de Vyver, R.

AU - van Hunen, J. J.

AU - Vetterli, M. C.

AU - Vikhrov, V.

AU - Vincter, M. G.

AU - Visser, J.

AU - Volk, E.

AU - Weiskopf, C.

AU - Wendland, J.

AU - Wilbert, J.

AU - Wise, T.

AU - Woller, K.

AU - Yoneyama, S.

AU - Zohrabian, H.

PY - 2000

Y1 - 2000

N2 - Measurements of the cross section for exclusive virtual-photoproduction of ρ0 mesons from hydrogen are reported. The data were collected by the HERMES experiment using 27.5 GeV positrons incident on a hydrogen gas target in the HERA storage ring. The invariant mass W of the photon-nucleon system ranges from 4.0 to 6.0 GeV, while the negative squared four-momentum Q2 of the virtual photon varies from 0.7 to 5.0 GeV2. The present data together with most of the previous data in the intermediate W-domain are well described by a model that infers the W-dependence of the cross section from the dependence on the Bjorken scaling variable cursive Greek chi of the unpolarized structure function for deep-inelastic scattering. In addition, a model calculation based on Off-Forward Parton Distributions gives a fairly good account of the longitudinal component of the ρ0 production cross section for Q2 > 2 GeV2.

AB - Measurements of the cross section for exclusive virtual-photoproduction of ρ0 mesons from hydrogen are reported. The data were collected by the HERMES experiment using 27.5 GeV positrons incident on a hydrogen gas target in the HERA storage ring. The invariant mass W of the photon-nucleon system ranges from 4.0 to 6.0 GeV, while the negative squared four-momentum Q2 of the virtual photon varies from 0.7 to 5.0 GeV2. The present data together with most of the previous data in the intermediate W-domain are well described by a model that infers the W-dependence of the cross section from the dependence on the Bjorken scaling variable cursive Greek chi of the unpolarized structure function for deep-inelastic scattering. In addition, a model calculation based on Off-Forward Parton Distributions gives a fairly good account of the longitudinal component of the ρ0 production cross section for Q2 > 2 GeV2.

UR - http://www.scopus.com/inward/record.url?scp=0001729625&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001729625&partnerID=8YFLogxK

U2 - 10.1007/s100520000483

DO - 10.1007/s100520000483

M3 - Article

AN - SCOPUS:0001729625

SN - 1434-6044

VL - 17

SP - 389

EP - 398

JO - European Physical Journal C

JF - European Physical Journal C

IS - 3

ER -

Exclusive leptoproduction of ρ⁰ mesons from hydrogen at intermediate virtual photon energies

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