Ratios of helicity amplitudes for exclusive ρ0 electroproduction

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

doi:10.1140/epjc/s10052-011-1609-2

Ratios of helicity amplitudes for exclusive ρ⁰ electroproduction

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. ContalbrigoP. 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

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

Abstract

Exclusive ρ⁰-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 GeV²<Q²<7.0 GeV², 3.0 GeV < W < 6.3 GeV, and -t′ < 0.4 GeV². Real and imaginary parts of the ratios of the natural-parity-exchange helicity amplitudes T₁₁ (γ_T* → ρT), T₀₁ (γ_T* → ρL), T₁₀ (γ_L* → ρT) and T_1-1 (γ_-T* → ρT) to T₀₀ (γ_L* → ρL) are extracted from the data. For the unnatural-parity-exchange amplitude U₁₁, the ratio {pipe}U₁₁/T₀₀{pipe} is obtained. The Q² and t′ dependences of these ratios are presented and compared with perturbative QCD predictions.

Original language	English (US)
Article number	1609
Pages (from-to)	1-25
Number of pages	25
Journal	European Physical Journal C
Volume	71
Issue number	4
DOIs	https://doi.org/10.1140/epjc/s10052-011-1609-2
State	Published - Apr 2011
Externally published	Yes

ASJC Scopus subject areas

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

Online availability

10.1140/epjc/s10052-011-1609-2

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Cite this

Airapetian, A., Akopov, N., Akopov, Z., Aschenauer, E. C., Augustyniak, W., Avakian, R., Avetissian, A., Avetisyan, E., Belostotski, S., Bianchi, N., Blok, H. P., Borissov, A., Bowles, J., Bryzgalov, V., Burns, J., Capiluppi, M., Capitani, G. P., Cisbani, E., Ciullo, G., ... Zupranski, P. (2011). Ratios of helicity amplitudes for exclusive ρ⁰ electroproduction. European Physical Journal C, 71(4), 1-25. [1609]. https://doi.org/10.1140/epjc/s10052-011-1609-2

Airapetian, A, Akopov, N, Akopov, Z, Aschenauer, EC, Augustyniak, W, Avakian, R, Avetissian, A, Avetisyan, E, Belostotski, S, Bianchi, N, Blok, HP, Borissov, A, Bowles, J, Bryzgalov, V, Burns, J, Capiluppi, M, Capitani, GP, Cisbani, E, Ciullo, G, Contalbrigo, M, Dalpiaz, PF, Deconinck, W, de Leo, R, de Nardo, L, de Sanctis, E, Diefenthaler, M, Di Nezza, P, Düren, M, Ehrenfried, M, Elbakian, G, Ellinghaus, F, Fabbri, R, Fantoni, A, Felawka, L, Frullani, S, Gabbert, D, Gapienko, G, Gapienko, V, Garibaldi, F, Gavrilov, G, Gharibyan, V, Giordano, F, Gliske, S, Golembiovskaya, M, Hadjidakis, C, Hartig, M, Hasch, D, Hill, G, Hillenbrand, A, Hoek, M, Holler, Y, Hristova, I, Imazu, Y, Ivanilov, A, Jackson, HE, Jo, HS, Joosten, S, Kaiser, R, Karyan, G, Keri, T, Kinney, E, Kisselev, A, Kobayashi, N, Korotkov, V, Kozlov, V, Kravchenko, P, Krivokhijine, VG, Lagamba, L, Lamb, R, Lapikás, L, Lehmann, I, Lenisa, P, Linden-Levy, LA, López Ruiz, A, Lorenzon, W, Lu, XG, Lu, XR, Ma, BQ, Mahon, D, Makins, NCR, Manaenkov, SI, Manfré, L, Mao, Y, Marianski, B, de la Ossa, AM, Marukyan, H, Miller, CA, Miyachi, Y, Movsisyan, A, Muccifora, V, Murray, M, Mussgiller, A, Nappi, E, Naryshkin, Y, Nass, A, Negodaev, M, Nowak, WD, Pappalardo, LL, Perez-Benito, R, Pickert, N, Reimer, PE, Reolon, AR, Riedl, C, Rith, K, Rosner, G, Rostomyan, A, Rubin, J, Ryckbosch, D, Salomatin, Y, Sanftl, F, Schäfer, A, Schnell, G, Schüler, KP, Seitz, B, Shibata, TA, Shutov, V, Stancari, M, Statera, M, Steffens, E, Steijger, JJM, Stinzing, F, Taroian, S, Terkulov, A, Trzcinski, A, Tytgat, M, Vandenbroucke, A, van Haarlem, Y, van Hulse, C, Veretennikov, D, Vikhrov, V, Vilardi, I, Wang, S, Yaschenko, S, Yen, S, Yu, W, Zihlmann, B & Zupranski, P 2011, 'Ratios of helicity amplitudes for exclusive ρ⁰ electroproduction', European Physical Journal C, vol. 71, no. 4, 1609, pp. 1-25. https://doi.org/10.1140/epjc/s10052-011-1609-2

@article{fceacc0e13224952a9489ac69efe1f9d,

title = "Ratios of helicity amplitudes for exclusive ρ0 electroproduction",

abstract = "Exclusive ρ0-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 GeV2<Q2<7.0 GeV2, 3.0 GeV < W < 6.3 GeV, and -t′ < 0.4 GeV2. Real and imaginary parts of the ratios of the natural-parity-exchange helicity amplitudes T11 (γT* → ρT), T01 (γT* → ρL), T10 (γL* → ρT) and T1-1 (γ-T* → ρT) to T00 (γL* → ρL) are extracted from the data. For the unnatural-parity-exchange amplitude U11, the ratio {pipe}U11/T00{pipe} is obtained. The Q2 and t′ dependences of these ratios are presented and compared with perturbative QCD predictions.",

author = "A. Airapetian and N. Akopov and Z. Akopov and Aschenauer, {E. C.} and W. Augustyniak and R. Avakian and A. Avetissian and E. Avetisyan and S. Belostotski and N. Bianchi and Blok, {H. P.} and A. Borissov and J. Bowles and V. Bryzgalov and J. Burns and M. Capiluppi and Capitani, {G. P.} and E. Cisbani and G. Ciullo and M. Contalbrigo and Dalpiaz, {P. F.} and W. Deconinck and {de Leo}, R. and {de Nardo}, L. and {de Sanctis}, E. and M. Diefenthaler and {Di Nezza}, P. and M. D{\"u}ren and M. Ehrenfried and G. Elbakian and F. Ellinghaus and R. Fabbri and A. Fantoni and L. Felawka and S. Frullani and D. Gabbert and G. Gapienko and V. Gapienko and F. Garibaldi and G. Gavrilov and V. Gharibyan and F. Giordano and S. Gliske and M. Golembiovskaya and C. Hadjidakis and M. Hartig and D. Hasch and G. Hill and A. Hillenbrand and M. Hoek and Y. Holler and I. Hristova and Y. Imazu and A. Ivanilov and Jackson, {H. E.} and Jo, {H. S.} and S. Joosten and R. Kaiser and G. Karyan and T. Keri and E. Kinney and A. Kisselev and N. Kobayashi and V. Korotkov and V. Kozlov and P. Kravchenko and Krivokhijine, {V. G.} and L. Lagamba and R. Lamb and L. Lapik{\'a}s and I. Lehmann and P. Lenisa and Linden-Levy, {L. A.} and {L{\'o}pez Ruiz}, A. and W. Lorenzon and Lu, {X. G.} and Lu, {X. R.} and Ma, {B. Q.} and D. Mahon and Makins, {N. C.R.} and Manaenkov, {S. I.} and L. Manfr{\'e} and Y. Mao and B. Marianski and {de la Ossa}, {A. Martinez} and H. Marukyan and Miller, {C. A.} and Y. Miyachi and A. Movsisyan and V. Muccifora and M. Murray and A. Mussgiller and E. Nappi and Y. Naryshkin and A. Nass and M. Negodaev and Nowak, {W. D.} and Pappalardo, {L. L.} and R. Perez-Benito and N. Pickert and Reimer, {P. E.} and Reolon, {A. R.} and C. Riedl and K. Rith and G. Rosner and A. Rostomyan and J. Rubin and D. Ryckbosch and Y. Salomatin and F. Sanftl and A. Sch{\"a}fer and G. Schnell and Sch{\"u}ler, {K. P.} and B. Seitz and Shibata, {T. A.} and V. Shutov and M. Stancari and M. Statera and E. Steffens and Steijger, {J. J.M.} and F. Stinzing and S. Taroian and A. Terkulov and A. Trzcinski and M. Tytgat and A. Vandenbroucke and {van Haarlem}, Y. and {van Hulse}, C. and D. Veretennikov and V. Vikhrov and I. Vilardi and S. Wang and S. Yaschenko and S. Yen and W. Yu and B. Zihlmann and P. Zupranski",

year = "2011",

month = apr,

doi = "10.1140/epjc/s10052-011-1609-2",

language = "English (US)",

volume = "71",

pages = "1--25",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer",

number = "4",

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TY - JOUR

T1 - Ratios of helicity amplitudes for exclusive ρ0 electroproduction

AU - Airapetian, A.

AU - Akopov, N.

AU - Akopov, Z.

AU - Aschenauer, E. C.

AU - Augustyniak, W.

AU - Avakian, R.

AU - Avetissian, A.

AU - Avetisyan, E.

AU - Belostotski, S.

AU - Bianchi, N.

AU - Blok, H. P.

AU - Borissov, A.

AU - Bowles, J.

AU - Bryzgalov, V.

AU - Burns, J.

AU - Capiluppi, M.

AU - Capitani, G. P.

AU - Cisbani, E.

AU - Ciullo, G.

AU - Contalbrigo, M.

AU - Dalpiaz, P. F.

AU - Deconinck, W.

AU - de Leo, R.

AU - de Nardo, L.

AU - de Sanctis, E.

AU - Diefenthaler, M.

AU - Di Nezza, P.

AU - Düren, M.

AU - Ehrenfried, M.

AU - Elbakian, G.

AU - Ellinghaus, F.

AU - Fabbri, R.

AU - Fantoni, A.

AU - Felawka, L.

AU - Frullani, S.

AU - Gabbert, D.

AU - Gapienko, G.

AU - Gapienko, V.

AU - Garibaldi, F.

AU - Gavrilov, G.

AU - Gharibyan, V.

AU - Giordano, F.

AU - Gliske, S.

AU - Golembiovskaya, M.

AU - Hadjidakis, C.

AU - Hartig, M.

AU - Hasch, D.

AU - Hill, G.

AU - Hillenbrand, A.

AU - Hoek, M.

AU - Holler, Y.

AU - Hristova, I.

AU - Imazu, Y.

AU - Ivanilov, A.

AU - Jackson, H. E.

AU - Jo, H. S.

AU - Joosten, S.

AU - Kaiser, R.

AU - Karyan, G.

AU - Keri, T.

AU - Kinney, E.

AU - Kisselev, A.

AU - Kobayashi, N.

AU - Korotkov, V.

AU - Kozlov, V.

AU - Kravchenko, P.

AU - Krivokhijine, V. G.

AU - Lagamba, L.

AU - Lamb, R.

AU - Lapikás, L.

AU - Lehmann, I.

AU - Lenisa, P.

AU - Linden-Levy, L. A.

AU - López Ruiz, A.

AU - Lorenzon, W.

AU - Lu, X. G.

AU - Lu, X. R.

AU - Ma, B. Q.

AU - Mahon, D.

AU - Makins, N. C.R.

AU - Manaenkov, S. I.

AU - Manfré, L.

AU - Mao, Y.

AU - Marianski, B.

AU - de la Ossa, A. Martinez

AU - Marukyan, H.

AU - Miller, C. A.

AU - Miyachi, Y.

AU - Movsisyan, A.

AU - Muccifora, V.

AU - Murray, M.

AU - Mussgiller, A.

AU - Nappi, E.

AU - Naryshkin, Y.

AU - Nass, A.

AU - Negodaev, M.

AU - Nowak, W. D.

AU - Pappalardo, L. L.

AU - Perez-Benito, R.

AU - Pickert, N.

AU - Reimer, P. E.

AU - Reolon, A. R.

AU - Riedl, C.

AU - Rith, K.

AU - Rosner, G.

AU - Rostomyan, A.

AU - Rubin, J.

AU - Ryckbosch, D.

AU - Salomatin, Y.

AU - Sanftl, F.

AU - Schäfer, A.

AU - Schnell, G.

AU - Schüler, K. P.

AU - Seitz, B.

AU - Shibata, T. A.

AU - Shutov, V.

AU - Stancari, M.

AU - Statera, M.

AU - Steffens, E.

AU - Steijger, J. J.M.

AU - Stinzing, F.

AU - Taroian, S.

AU - Terkulov, A.

AU - Trzcinski, A.

AU - Tytgat, M.

AU - Vandenbroucke, A.

AU - van Haarlem, Y.

AU - van Hulse, C.

AU - Veretennikov, D.

AU - Vikhrov, V.

AU - Vilardi, I.

AU - Wang, S.

AU - Yaschenko, S.

AU - Yen, S.

AU - Yu, W.

AU - Zihlmann, B.

AU - Zupranski, P.

PY - 2011/4

Y1 - 2011/4

N2 - Exclusive ρ0-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 GeV2<Q2<7.0 GeV2, 3.0 GeV < W < 6.3 GeV, and -t′ < 0.4 GeV2. Real and imaginary parts of the ratios of the natural-parity-exchange helicity amplitudes T11 (γT* → ρT), T01 (γT* → ρL), T10 (γL* → ρT) and T1-1 (γ-T* → ρT) to T00 (γL* → ρL) are extracted from the data. For the unnatural-parity-exchange amplitude U11, the ratio {pipe}U11/T00{pipe} is obtained. The Q2 and t′ dependences of these ratios are presented and compared with perturbative QCD predictions.

AB - Exclusive ρ0-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 GeV2<Q2<7.0 GeV2, 3.0 GeV < W < 6.3 GeV, and -t′ < 0.4 GeV2. Real and imaginary parts of the ratios of the natural-parity-exchange helicity amplitudes T11 (γT* → ρT), T01 (γT* → ρL), T10 (γL* → ρT) and T1-1 (γ-T* → ρT) to T00 (γL* → ρL) are extracted from the data. For the unnatural-parity-exchange amplitude U11, the ratio {pipe}U11/T00{pipe} is obtained. The Q2 and t′ dependences of these ratios are presented and compared with perturbative QCD predictions.

UR - http://www.scopus.com/inward/record.url?scp=79953278692&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79953278692&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-011-1609-2

DO - 10.1140/epjc/s10052-011-1609-2

M3 - Article

AN - SCOPUS:79953278692

SN - 1434-6044

VL - 71

SP - 1

EP - 25

JO - European Physical Journal C

JF - European Physical Journal C

IS - 4

M1 - 1609

ER -