Beam-charge azimuthal asymmetry and deeply virtual Compton scattering

A. Airapetian; N. Akopov; Z. Akopov; M. Amarian; A. Andrus; E. C. Aschenauer; W. Augustyniak; R. Avakian; A. Avetissian; E. Avetissian; P. Bailey; D. Balin; M. Beckmann; S. Belostotski; N. Bianchi; H. P. Blok; H. Böttcher; A. Borissov; A. Borysenko; M. Bouwhuis; A. Brüll; V. Bryzgalov; M. Capiluppi; G. P. Capitani; T. Chen; G. Ciullo; M. Contalbrigo; P. F. Dalpiaz; W. Deconinck; R. De Leo; M. Demey; L. De Nardo; E. De Sanctis; E. Devitsin; P. Di Nezza; J. Dreschler; M. Düren; M. Ehrenfried; A. Elalaoui-Moulay; G. Elbakian; F. Ellinghaus; U. Elschenbroich; R. Fabbri; A. Fantoni; L. Felawka; S. Frullani; A. Funel; G. Gapienko; V. Gapienko; F. Garibaldi; K. Garrow; D. Gaskell; G. Gavrilov; V. Gharibyan; O. Grebeniouk; I. M. Gregor; C. Hadjidakis; K. Hafidi; M. Hartig; D. Hasch; W. H.A. Hesselink; A. Hillenbrand; M. Hoek; Y. Holler; B. Hommez; I. Hristova; G. Iarygin; A. Ivanilov; A. Izotov; H. E. Jackson; A. Jgoun; R. Kaiser; E. Kinney; A. Kisselev; T. Kobayashi; M. Kopytin; V. Korotkov; V. Kozlov; B. Krauss; V. G. Krivokhijine; L. Lagamba; L. Lapikás; A. Laziev; P. Lenisa; P. Liebing; L. A. Linden-Levy; W. Lorenzon; H. Lu; J. Lu; S. Lu; B. Q. Ma; B. Maiheu; N. C.R. Makins; Y. Mao; B. Marianski; H. Marukyan; F. Masoli; V. Mexner; N. Meyners; T. Michler; O. Mikloukho; C. A. Miller; Y. Miyachi; V. Muccifora; M. Murray; A. Nagaitsev; E. Nappi; Y. Naryshkin; M. Negodaev; W. D. Nowak; K. Oganessyan; H. Ohsuga; A. Osborne; N. Pickert; D. H. Potterveld; M. Raithel; D. Reggiani; P. E. Reimer; A. Reischl; A. R. Reolon; C. Riedl; K. Rith; G. Rosner; A. Rostomyan; L. Rubacek; J. Rubin; D. Ryckbosch; Y. Salomatin; I. Sanjiev; I. Savin; A. Schäfer; G. Schnell; K. P. Schüler; J. Seele; R. Seidl; B. Seitz; R. Shanidze; C. Shearer; T. A. Shibata; V. Shutov; K. Sinram; W. Sommer; M. Stancari; M. Statera; E. Steffens; J. J.M. Steijger; H. Stenzel; J. Stewart; F. Stinzing; P. Tait; H. Tanaka; S. Taroian; B. Tchuiko; A. Terkulov; A. Trzcinski; M. Tytgat; A. Vandenbroucke; P. B. Van Der Nat; G. Van Der Steenhoven; Y. Van Haarlem; V. Vikhrov; M. G. Vincter; C. Vogel; J. Volmer; S. Wang; J. Wendland; Y. Ye; Z. Ye; S. Yen; B. Zihlmann; P. Zupranski

doi:10.1103/PhysRevD.75.011103

Beam-charge azimuthal asymmetry and deeply virtual Compton scattering

A. Airapetian, N. Akopov, Z. Akopov, M. Amarian, A. Andrus, E. C. Aschenauer, W. Augustyniak, R. Avakian, A. Avetissian, E. Avetissian, P. Bailey, D. Balin, M. Beckmann, S. Belostotski, N. Bianchi, H. P. Blok, H. Böttcher, A. Borissov, A. Borysenko, M. BouwhuisA. Brüll, V. Bryzgalov, M. Capiluppi, G. P. Capitani, T. Chen, G. Ciullo, M. Contalbrigo, P. F. Dalpiaz, W. Deconinck, R. De Leo, M. Demey, L. De Nardo, E. De Sanctis, E. Devitsin, P. Di Nezza, J. Dreschler, M. Düren, M. Ehrenfried, A. Elalaoui-Moulay, G. Elbakian, F. Ellinghaus, U. Elschenbroich, R. Fabbri, A. Fantoni, L. Felawka, S. Frullani, A. Funel, G. Gapienko, V. Gapienko, F. Garibaldi, K. Garrow, D. Gaskell, G. Gavrilov, V. Gharibyan, O. Grebeniouk, I. M. Gregor, C. Hadjidakis, K. Hafidi, M. Hartig, D. Hasch, W. H.A. Hesselink, A. Hillenbrand, M. Hoek, Y. Holler, B. Hommez, I. Hristova, G. Iarygin, A. Ivanilov, A. Izotov, H. E. Jackson, A. Jgoun, R. Kaiser, E. Kinney, A. Kisselev, T. Kobayashi, M. Kopytin, V. Korotkov, V. Kozlov, B. Krauss, V. G. Krivokhijine, L. Lagamba, L. Lapikás, A. Laziev, P. Lenisa, P. Liebing, L. A. Linden-Levy, W. Lorenzon, H. Lu, J. Lu, S. Lu, B. Q. Ma, B. Maiheu, N. C.R. Makins, Y. Mao, B. Marianski, H. Marukyan, F. Masoli, V. Mexner, N. Meyners, T. Michler, O. Mikloukho, C. A. Miller, Y. Miyachi, V. Muccifora, M. Murray, A. Nagaitsev, E. Nappi, Y. Naryshkin, M. Negodaev, W. D. Nowak, K. Oganessyan, H. Ohsuga, A. Osborne, N. Pickert, D. H. Potterveld, M. Raithel, D. Reggiani, P. E. Reimer, A. Reischl, A. R. Reolon, C. Riedl, K. Rith, G. Rosner, A. Rostomyan, L. Rubacek, J. Rubin, D. Ryckbosch, Y. Salomatin, I. Sanjiev, I. Savin, A. Schäfer, G. Schnell, K. P. Schüler, J. Seele, R. Seidl, B. Seitz, R. Shanidze, C. Shearer, T. A. Shibata, V. Shutov, K. Sinram, W. Sommer, M. Stancari, M. Statera, E. Steffens, J. J.M. Steijger, H. Stenzel, J. Stewart, F. Stinzing, P. Tait, H. Tanaka, S. Taroian, B. Tchuiko, A. Terkulov, A. Trzcinski, M. Tytgat, A. Vandenbroucke, P. B. Van Der Nat, G. Van Der Steenhoven, Y. Van Haarlem, V. Vikhrov, M. G. Vincter, C. Vogel, J. Volmer, S. Wang, J. Wendland, Y. Ye, Z. Ye, S. Yen, B. Zihlmann, P. Zupranski

Physics

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

Abstract

The first observation of an azimuthal cross section asymmetry with respect to the charge of the incoming lepton beam is reported from a study of hard exclusive electroproduction of real photons. The data have been accumulated by the HERMES experiment at DESY, in which the HERA 27.6 GeV electron or positron beam scattered off an unpolarized hydrogen gas target. The observed asymmetry is attributed to the interference between the Bethe-Heitler process and the deeply virtual Compton scattering (DVCS) process. The interference term is sensitive to DVCS amplitudes, which provide the most direct access to generalized parton distributions.

Original language	English (US)
Article number	011103
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	75
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.75.011103
State	Published - 2007

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

Online availability

10.1103/PhysRevD.75.011103

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Cite this

Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Andrus, A., Aschenauer, E. C., Augustyniak, W., Avakian, R., Avetissian, A., Avetissian, E., Bailey, P., Balin, D., Beckmann, M., Belostotski, S., Bianchi, N., Blok, H. P., Böttcher, H., Borissov, A., Borysenko, A., ... Zupranski, P. (2007). Beam-charge azimuthal asymmetry and deeply virtual Compton scattering. Physical Review D - Particles, Fields, Gravitation and Cosmology, 75(1), [011103]. https://doi.org/10.1103/PhysRevD.75.011103

Beam-charge azimuthal asymmetry and deeply virtual Compton scattering. / Airapetian, A.; Akopov, N.; Akopov, Z.; Amarian, M.; Andrus, A.; Aschenauer, E. C.; Augustyniak, W.; Avakian, R.; Avetissian, A.; Avetissian, E.; Bailey, P.; Balin, D.; Beckmann, M.; Belostotski, S.; Bianchi, N.; Blok, H. P.; Böttcher, H.; Borissov, A.; Borysenko, A.; Bouwhuis, M.; Brüll, A.; Bryzgalov, V.; Capiluppi, M.; Capitani, G. P.; Chen, T.; Ciullo, G.; Contalbrigo, M.; Dalpiaz, P. F.; Deconinck, W.; De Leo, R.; Demey, M.; De Nardo, L.; De Sanctis, E.; Devitsin, E.; Di Nezza, P.; Dreschler, J.; Düren, M.; Ehrenfried, M.; Elalaoui-Moulay, A.; Elbakian, G.; Ellinghaus, F.; Elschenbroich, U.; Fabbri, R.; Fantoni, A.; Felawka, L.; Frullani, S.; Funel, A.; Gapienko, G.; Gapienko, V.; Garibaldi, F.; Garrow, K.; Gaskell, D.; Gavrilov, G.; Gharibyan, V.; Grebeniouk, O.; Gregor, I. M.; Hadjidakis, C.; Hafidi, K.; Hartig, M.; Hasch, D.; Hesselink, W. H.A.; Hillenbrand, A.; Hoek, M.; Holler, Y.; Hommez, B.; Hristova, I.; Iarygin, G.; Ivanilov, A.; Izotov, A.; Jackson, H. E.; Jgoun, A.; Kaiser, R.; Kinney, E.; Kisselev, A.; Kobayashi, T.; Kopytin, M.; Korotkov, V.; Kozlov, V.; Krauss, B.; Krivokhijine, V. G.; Lagamba, L.; Lapikás, L.; Laziev, A.; Lenisa, P.; Liebing, P.; Linden-Levy, L. A.; Lorenzon, W.; Lu, H.; Lu, J.; Lu, S.; Ma, B. Q.; Maiheu, B.; Makins, N. C.R.; Mao, Y.; Marianski, B.; Marukyan, H.; Masoli, F.; Mexner, V.; Meyners, N.; Michler, T.; Mikloukho, O.; Miller, C. A.; Miyachi, Y.; Muccifora, V.; Murray, M.; Nagaitsev, A.; Nappi, E.; Naryshkin, Y.; Negodaev, M.; Nowak, W. D.; Oganessyan, K.; Ohsuga, H.; Osborne, A.; Pickert, N.; Potterveld, D. H.; Raithel, M.; Reggiani, D.; Reimer, P. E.; Reischl, A.; Reolon, A. R.; Riedl, C.; Rith, K.; Rosner, G.; Rostomyan, A.; Rubacek, L.; Rubin, J.; Ryckbosch, D.; Salomatin, Y.; Sanjiev, I.; Savin, I.; Schäfer, A.; Schnell, G.; Schüler, K. P.; Seele, J.; Seidl, R.; Seitz, B.; Shanidze, R.; Shearer, C.; Shibata, T. A.; Shutov, V.; Sinram, K.; Sommer, W.; Stancari, M.; Statera, M.; Steffens, E.; Steijger, J. J.M.; Stenzel, H.; Stewart, J.; Stinzing, F.; Tait, P.; Tanaka, H.; Taroian, S.; Tchuiko, B.; Terkulov, A.; Trzcinski, A.; Tytgat, M.; Vandenbroucke, A.; Van Der Nat, P. B.; Van Der Steenhoven, G.; Van Haarlem, Y.; Vikhrov, V.; Vincter, M. G.; Vogel, C.; Volmer, J.; Wang, S.; Wendland, J.; Ye, Y.; Ye, Z.; Yen, S.; Zihlmann, B.; Zupranski, P.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 75, No. 1, 011103, 2007.

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

Airapetian, A, Akopov, N, Akopov, Z, Amarian, M, Andrus, A, Aschenauer, EC, Augustyniak, W, Avakian, R, Avetissian, A, Avetissian, E, Bailey, P, Balin, D, Beckmann, M, Belostotski, S, Bianchi, N, Blok, HP, Böttcher, H, Borissov, A, Borysenko, A, Bouwhuis, M, Brüll, A, Bryzgalov, V, Capiluppi, M, Capitani, GP, Chen, T, Ciullo, G, Contalbrigo, M, Dalpiaz, PF, Deconinck, W, De Leo, R, Demey, M, De Nardo, L, De Sanctis, E, Devitsin, E, Di Nezza, P, Dreschler, J, Düren, M, Ehrenfried, M, Elalaoui-Moulay, A, Elbakian, G, Ellinghaus, F, Elschenbroich, U, Fabbri, R, Fantoni, A, Felawka, L, Frullani, S, Funel, A, Gapienko, G, Gapienko, V, Garibaldi, F, Garrow, K, Gaskell, D, Gavrilov, G, Gharibyan, V, Grebeniouk, O, Gregor, IM, Hadjidakis, C, Hafidi, K, Hartig, M, Hasch, D, Hesselink, WHA, Hillenbrand, A, Hoek, M, Holler, Y, Hommez, B, Hristova, I, Iarygin, G, Ivanilov, A, Izotov, A, Jackson, HE, Jgoun, A, Kaiser, R, Kinney, E, Kisselev, A, Kobayashi, T, Kopytin, M, Korotkov, V, Kozlov, V, Krauss, B, Krivokhijine, VG, Lagamba, L, Lapikás, L, Laziev, A, Lenisa, P, Liebing, P, Linden-Levy, LA, Lorenzon, W, Lu, H, Lu, J, Lu, S, Ma, BQ, Maiheu, B, Makins, NCR, Mao, Y, Marianski, B, Marukyan, H, Masoli, F, Mexner, V, Meyners, N, Michler, T, Mikloukho, O, Miller, CA, Miyachi, Y, Muccifora, V, Murray, M, Nagaitsev, A, Nappi, E, Naryshkin, Y, Negodaev, M, Nowak, WD, Oganessyan, K, Ohsuga, H, Osborne, A, Pickert, N, Potterveld, DH, Raithel, M, Reggiani, D, Reimer, PE, Reischl, A, Reolon, AR, Riedl, C, Rith, K, Rosner, G, Rostomyan, A, Rubacek, L, Rubin, J, Ryckbosch, D, Salomatin, Y, Sanjiev, I, Savin, I, Schäfer, A, Schnell, G, Schüler, KP, Seele, J, Seidl, R, Seitz, B, Shanidze, R, Shearer, C, Shibata, TA, Shutov, V, Sinram, K, Sommer, W, Stancari, M, Statera, M, Steffens, E, Steijger, JJM, Stenzel, H, Stewart, J, Stinzing, F, Tait, P, Tanaka, H, Taroian, S, Tchuiko, B, Terkulov, A, Trzcinski, A, Tytgat, M, Vandenbroucke, A, Van Der Nat, PB, Van Der Steenhoven, G, Van Haarlem, Y, Vikhrov, V, Vincter, MG, Vogel, C, Volmer, J, Wang, S, Wendland, J, Ye, Y, Ye, Z, Yen, S, Zihlmann, B & Zupranski, P 2007, 'Beam-charge azimuthal asymmetry and deeply virtual Compton scattering', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 75, no. 1, 011103. https://doi.org/10.1103/PhysRevD.75.011103

Airapetian, A. ; Akopov, N. ; Akopov, Z. ; Amarian, M. ; Andrus, A. ; Aschenauer, E. C. ; Augustyniak, W. ; Avakian, R. ; Avetissian, A. ; Avetissian, E. ; Bailey, P. ; Balin, D. ; Beckmann, M. ; Belostotski, S. ; Bianchi, N. ; Blok, H. P. ; Böttcher, H. ; Borissov, A. ; Borysenko, A. ; Bouwhuis, M. ; Brüll, A. ; Bryzgalov, V. ; Capiluppi, M. ; Capitani, G. P. ; Chen, T. ; Ciullo, G. ; Contalbrigo, M. ; Dalpiaz, P. F. ; Deconinck, W. ; De Leo, R. ; Demey, M. ; De Nardo, L. ; De Sanctis, E. ; Devitsin, E. ; Di Nezza, P. ; Dreschler, J. ; Düren, M. ; Ehrenfried, M. ; Elalaoui-Moulay, A. ; Elbakian, G. ; Ellinghaus, F. ; Elschenbroich, U. ; Fabbri, R. ; Fantoni, A. ; Felawka, L. ; Frullani, S. ; Funel, A. ; Gapienko, G. ; Gapienko, V. ; Garibaldi, F. ; Garrow, K. ; Gaskell, D. ; Gavrilov, G. ; Gharibyan, V. ; Grebeniouk, O. ; Gregor, I. M. ; Hadjidakis, C. ; Hafidi, K. ; Hartig, M. ; Hasch, D. ; Hesselink, W. H.A. ; Hillenbrand, A. ; Hoek, M. ; Holler, Y. ; Hommez, B. ; Hristova, I. ; Iarygin, G. ; Ivanilov, A. ; Izotov, A. ; Jackson, H. E. ; Jgoun, A. ; Kaiser, R. ; Kinney, E. ; Kisselev, A. ; Kobayashi, T. ; Kopytin, M. ; Korotkov, V. ; Kozlov, V. ; Krauss, B. ; Krivokhijine, V. G. ; Lagamba, L. ; Lapikás, L. ; Laziev, A. ; Lenisa, P. ; Liebing, P. ; Linden-Levy, L. A. ; Lorenzon, W. ; Lu, H. ; Lu, J. ; Lu, S. ; Ma, B. Q. ; Maiheu, B. ; Makins, N. C.R. ; Mao, Y. ; Marianski, B. ; Marukyan, H. ; Masoli, F. ; Mexner, V. ; Meyners, N. ; Michler, T. ; Mikloukho, O. ; Miller, C. A. ; Miyachi, Y. ; Muccifora, V. ; Murray, M. ; Nagaitsev, A. ; Nappi, E. ; Naryshkin, Y. ; Negodaev, M. ; Nowak, W. D. ; Oganessyan, K. ; Ohsuga, H. ; Osborne, A. ; Pickert, N. ; Potterveld, D. H. ; Raithel, M. ; Reggiani, D. ; Reimer, P. E. ; Reischl, A. ; Reolon, A. R. ; Riedl, C. ; Rith, K. ; Rosner, G. ; Rostomyan, A. ; Rubacek, L. ; Rubin, J. ; Ryckbosch, D. ; Salomatin, Y. ; Sanjiev, I. ; Savin, I. ; Schäfer, A. ; Schnell, G. ; Schüler, K. P. ; Seele, J. ; Seidl, R. ; Seitz, B. ; Shanidze, R. ; Shearer, C. ; Shibata, T. A. ; Shutov, V. ; Sinram, K. ; Sommer, W. ; Stancari, M. ; Statera, M. ; Steffens, E. ; Steijger, J. J.M. ; Stenzel, H. ; Stewart, J. ; Stinzing, F. ; Tait, P. ; Tanaka, H. ; Taroian, S. ; Tchuiko, B. ; Terkulov, A. ; Trzcinski, A. ; Tytgat, M. ; Vandenbroucke, A. ; Van Der Nat, P. B. ; Van Der Steenhoven, G. ; Van Haarlem, Y. ; Vikhrov, V. ; Vincter, M. G. ; Vogel, C. ; Volmer, J. ; Wang, S. ; Wendland, J. ; Ye, Y. ; Ye, Z. ; Yen, S. ; Zihlmann, B. ; Zupranski, P. / Beam-charge azimuthal asymmetry and deeply virtual Compton scattering. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2007 ; Vol. 75, No. 1.

@article{1b67dd43efd14e9887629e762d71d949,

title = "Beam-charge azimuthal asymmetry and deeply virtual Compton scattering",

abstract = "The first observation of an azimuthal cross section asymmetry with respect to the charge of the incoming lepton beam is reported from a study of hard exclusive electroproduction of real photons. The data have been accumulated by the HERMES experiment at DESY, in which the HERA 27.6 GeV electron or positron beam scattered off an unpolarized hydrogen gas target. The observed asymmetry is attributed to the interference between the Bethe-Heitler process and the deeply virtual Compton scattering (DVCS) process. The interference term is sensitive to DVCS amplitudes, which provide the most direct access to generalized parton distributions.",

author = "A. Airapetian and N. Akopov and Z. Akopov and M. Amarian and A. Andrus and Aschenauer, {E. C.} and W. Augustyniak and R. Avakian and A. Avetissian and E. Avetissian and P. Bailey and D. Balin and M. Beckmann and S. Belostotski and N. Bianchi and Blok, {H. P.} and H. B{\"o}ttcher and A. Borissov and A. Borysenko and M. Bouwhuis and A. Br{\"u}ll and V. Bryzgalov and M. Capiluppi and Capitani, {G. P.} and T. Chen and G. Ciullo and M. Contalbrigo and Dalpiaz, {P. F.} and W. Deconinck and {De Leo}, R. and M. Demey and {De Nardo}, L. and {De Sanctis}, E. and E. Devitsin and {Di Nezza}, P. and J. Dreschler and M. D{\"u}ren and M. Ehrenfried and A. Elalaoui-Moulay and G. Elbakian and F. Ellinghaus and U. Elschenbroich and R. Fabbri and A. Fantoni and L. Felawka and S. Frullani and A. Funel and G. Gapienko and V. Gapienko and F. Garibaldi and K. Garrow and D. Gaskell and G. Gavrilov and V. Gharibyan and O. Grebeniouk and Gregor, {I. M.} and C. Hadjidakis and K. Hafidi and M. Hartig and D. Hasch and Hesselink, {W. H.A.} and A. Hillenbrand and M. Hoek and Y. Holler and B. Hommez and I. Hristova and G. Iarygin and A. Ivanilov and A. Izotov and Jackson, {H. E.} and A. Jgoun and R. Kaiser and E. Kinney and A. Kisselev and T. Kobayashi and M. Kopytin and V. Korotkov and V. Kozlov and B. Krauss and Krivokhijine, {V. G.} and L. Lagamba and L. Lapik{\'a}s and A. Laziev and P. Lenisa and P. Liebing and Linden-Levy, {L. A.} and W. Lorenzon and H. Lu and J. Lu and S. Lu and Ma, {B. Q.} and B. Maiheu and Makins, {N. C.R.} and Y. Mao and B. Marianski and H. Marukyan and F. Masoli and V. Mexner and N. Meyners and T. Michler and O. Mikloukho and Miller, {C. A.} and Y. Miyachi and V. Muccifora and M. Murray and A. Nagaitsev and E. Nappi and Y. Naryshkin and M. Negodaev and Nowak, {W. D.} and K. Oganessyan and H. Ohsuga and A. Osborne and N. Pickert and Potterveld, {D. H.} and M. Raithel and D. Reggiani and Reimer, {P. E.} and A. Reischl and Reolon, {A. R.} and C. Riedl and K. Rith and G. Rosner and A. Rostomyan and L. Rubacek and J. Rubin and D. Ryckbosch and Y. Salomatin and I. Sanjiev and I. Savin and A. Sch{\"a}fer and G. Schnell and Sch{\"u}ler, {K. P.} and J. Seele and R. Seidl and B. Seitz and R. Shanidze and C. Shearer and Shibata, {T. A.} and V. Shutov and K. Sinram and W. Sommer and M. Stancari and M. Statera and E. Steffens and Steijger, {J. J.M.} and H. Stenzel and J. Stewart and F. Stinzing and P. Tait and H. Tanaka and S. Taroian and B. Tchuiko and A. Terkulov and A. Trzcinski and M. Tytgat and A. Vandenbroucke and {Van Der Nat}, {P. B.} and {Van Der Steenhoven}, G. and {Van Haarlem}, Y. and V. Vikhrov and Vincter, {M. G.} and C. Vogel and J. Volmer and S. Wang and J. Wendland and Y. Ye and Z. Ye and S. Yen and B. Zihlmann and P. Zupranski",

year = "2007",

doi = "10.1103/PhysRevD.75.011103",

language = "English (US)",

volume = "75",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

number = "1",

}

TY - JOUR

T1 - Beam-charge azimuthal asymmetry and deeply virtual Compton scattering

AU - Airapetian, A.

AU - Akopov, N.

AU - Akopov, Z.

AU - Amarian, M.

AU - Andrus, A.

AU - Aschenauer, E. C.

AU - Augustyniak, W.

AU - Avakian, R.

AU - Avetissian, A.

AU - Avetissian, E.

AU - Bailey, P.

AU - Balin, D.

AU - Beckmann, M.

AU - Belostotski, S.

AU - Bianchi, N.

AU - Blok, H. P.

AU - Böttcher, H.

AU - Borissov, A.

AU - Borysenko, A.

AU - Bouwhuis, M.

AU - Brüll, A.

AU - Bryzgalov, V.

AU - Capiluppi, M.

AU - Capitani, G. P.

AU - Chen, T.

AU - Ciullo, G.

AU - Contalbrigo, M.

AU - Dalpiaz, P. F.

AU - Deconinck, W.

AU - De Leo, R.

AU - Demey, M.

AU - De Nardo, L.

AU - De Sanctis, E.

AU - Devitsin, E.

AU - Di Nezza, P.

AU - Dreschler, J.

AU - Düren, M.

AU - Ehrenfried, M.

AU - Elalaoui-Moulay, A.

AU - Elbakian, G.

AU - Ellinghaus, F.

AU - Elschenbroich, U.

AU - Fabbri, R.

AU - Fantoni, A.

AU - Felawka, L.

AU - Frullani, S.

AU - Funel, A.

AU - Gapienko, G.

AU - Gapienko, V.

AU - Garibaldi, F.

AU - Garrow, K.

AU - Gaskell, D.

AU - Gavrilov, G.

AU - Gharibyan, V.

AU - Grebeniouk, O.

AU - Gregor, I. M.

AU - Hadjidakis, C.

AU - Hafidi, K.

AU - Hartig, M.

AU - Hasch, D.

AU - Hesselink, W. H.A.

AU - Hillenbrand, A.

AU - Hoek, M.

AU - Holler, Y.

AU - Hommez, B.

AU - Hristova, I.

AU - Iarygin, G.

AU - Ivanilov, A.

AU - Izotov, A.

AU - Jackson, H. E.

AU - Jgoun, A.

AU - Kaiser, R.

AU - Kinney, E.

AU - Kisselev, A.

AU - Kobayashi, T.

AU - Kopytin, M.

AU - Korotkov, V.

AU - Kozlov, V.

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PY - 2007

Y1 - 2007

N2 - The first observation of an azimuthal cross section asymmetry with respect to the charge of the incoming lepton beam is reported from a study of hard exclusive electroproduction of real photons. The data have been accumulated by the HERMES experiment at DESY, in which the HERA 27.6 GeV electron or positron beam scattered off an unpolarized hydrogen gas target. The observed asymmetry is attributed to the interference between the Bethe-Heitler process and the deeply virtual Compton scattering (DVCS) process. The interference term is sensitive to DVCS amplitudes, which provide the most direct access to generalized parton distributions.

AB - The first observation of an azimuthal cross section asymmetry with respect to the charge of the incoming lepton beam is reported from a study of hard exclusive electroproduction of real photons. The data have been accumulated by the HERMES experiment at DESY, in which the HERA 27.6 GeV electron or positron beam scattered off an unpolarized hydrogen gas target. The observed asymmetry is attributed to the interference between the Bethe-Heitler process and the deeply virtual Compton scattering (DVCS) process. The interference term is sensitive to DVCS amplitudes, which provide the most direct access to generalized parton distributions.

UR - http://www.scopus.com/inward/record.url?scp=33846520040&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846520040&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.75.011103

DO - 10.1103/PhysRevD.75.011103

M3 - Article

AN - SCOPUS:33846520040

VL - 75

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

SN - 1550-7998

IS - 1

M1 - 011103

ER -

Beam-charge azimuthal asymmetry and deeply virtual Compton scattering

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