Measurement of the virtual-photon asymmetry A2 and the spin-structure function g2 of the proton

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; 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; 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; V. Korotkov; V. Kozlov; P. Kravchenko; V. G. Krivokhijine; L. Lagamba; L. Lapikás; I. Lehmann; P. Lenisa; A. López Ruiz; W. Lorenzon; 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; A. Petrosyan; 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; J. Stewart; F. Stinzing; S. Taroian; A. Terkulov; R. Truty; A. Trzcinski; M. Tytgat; A. Vandenbroucke; Y. van Haarlem; C. van Hulse; D. Veretennikov; V. Vikhrov; I. Vilardi; S. Wang; S. Yaschenko; Z. Ye; S. Yen; V. Zagrebelnyy; D. Zeiler; B. Zihlmann; P. Zupranski

doi:10.1140/epjc/s10052-012-1921-5

Measurement of the virtual-photon asymmetry A₂ and the spin-structure function g₂ of the proton

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, 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, 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, V. Korotkov, V. Kozlov, P. Kravchenko, V. G. Krivokhijine, L. Lagamba, L. Lapikás, I. Lehmann, P. Lenisa, A. López Ruiz, W. Lorenzon, 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, A. Petrosyan, 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, J. Stewart, F. Stinzing, S. Taroian, A. Terkulov, R. Truty, A. Trzcinski, M. Tytgat, A. Vandenbroucke, Y. van Haarlem, C. van Hulse, D. Veretennikov, V. Vikhrov, I. Vilardi, S. Wang, S. Yaschenko, Z. Ye, S. Yen, V. Zagrebelnyy, D. Zeiler, B. Zihlmann, P. Zupranski

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Abstract

A measurement of the virtual-photon asymmetry A₂(x,Q²) and of the spin-structure function g₂(x,Q²) of the proton are presented for the kinematic range 0.004<x<0.9 and 0.18 GeV²<Q²<20 GeV². The data were collected by the HERMES experiment at the HERA storage ring at DESY while studying inclusive deep-inelastic scattering of 27.6 GeV longitudinally polarized leptons off a transversely polarized hydrogen gas target. The results are consistent with previous experimental data from CERN and SLAC. For the x-range covered, the measured integral of g₂(x) converges to the null result of the Burkhardt-Cottingham sum rule. The x² moment of the twist-3 contribution to g₂(x) is found to be compatible with zero.

Original language	English
Article number	1921
Pages (from-to)	1-7
Number of pages	7
Journal	European Physical Journal C
Volume	72
Issue number	3
DOIs	https://doi.org/10.1140/epjc/s10052-012-1921-5
State	Published - Mar 2012

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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. (2012). Measurement of the virtual-photon asymmetry A₂ and the spin-structure function g₂ of the proton. European Physical Journal C, 72(3), 1-7. Article 1921. https://doi.org/10.1140/epjc/s10052-012-1921-5

@article{7ff5ff4a471c481b991d57917de30003,

title = "Measurement of the virtual-photon asymmetry A2 and the spin-structure function g2 of the proton",

abstract = "A measurement of the virtual-photon asymmetry A2(x,Q2) and of the spin-structure function g2(x,Q2) of the proton are presented for the kinematic range 0.00422<20 GeV2. The data were collected by the HERMES experiment at the HERA storage ring at DESY while studying inclusive deep-inelastic scattering of 27.6 GeV longitudinally polarized leptons off a transversely polarized hydrogen gas target. The results are consistent with previous experimental data from CERN and SLAC. For the x-range covered, the measured integral of g2(x) converges to the null result of the Burkhardt-Cottingham sum rule. The x2 moment of the twist-3 contribution to g2(x) is found to be compatible with zero.",

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 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 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 V. Korotkov and V. Kozlov and P. Kravchenko and Krivokhijine, {V. G.} and L. Lagamba and L. Lapik{\'a}s and I. Lehmann and P. Lenisa and Ruiz, {A. L{\'o}pez} and W. Lorenzon 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 A. Petrosyan 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 J. Stewart and F. Stinzing and S. Taroian and A. Terkulov and R. Truty 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 Z. Ye and S. Yen and V. Zagrebelnyy and D. Zeiler and B. Zihlmann and P. Zupranski",

year = "2012",

month = mar,

doi = "10.1140/epjc/s10052-012-1921-5",

language = "English",

volume = "72",

pages = "1--7",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Institute for Ionics",

number = "3",

}

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, 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, 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, Korotkov, V, Kozlov, V, Kravchenko, P, Krivokhijine, VG, Lagamba, L, Lapikás, L, Lehmann, I, Lenisa, P, Ruiz, AL, Lorenzon, W, 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, Petrosyan, A, 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, Stewart, J, Stinzing, F, Taroian, S, Terkulov, A, Truty, R, Trzcinski, A, Tytgat, M, Vandenbroucke, A, van Haarlem, Y, van Hulse, C, Veretennikov, D, Vikhrov, V, Vilardi, I, Wang, S, Yaschenko, S, Ye, Z, Yen, S, Zagrebelnyy, V, Zeiler, D, Zihlmann, B & Zupranski, P 2012, 'Measurement of the virtual-photon asymmetry A₂ and the spin-structure function g₂ of the proton', European Physical Journal C, vol. 72, no. 3, 1921, pp. 1-7. https://doi.org/10.1140/epjc/s10052-012-1921-5

TY - JOUR

T1 - Measurement of the virtual-photon asymmetry A2 and the spin-structure function g2 of the proton

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 - 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 - 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 - Korotkov, V.

AU - Kozlov, V.

AU - Kravchenko, P.

AU - Krivokhijine, V. G.

AU - Lagamba, L.

AU - Lapikás, L.

AU - Lehmann, I.

AU - Lenisa, P.

AU - Ruiz, A. López

AU - Lorenzon, W.

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 - Petrosyan, A.

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 - Stewart, J.

AU - Stinzing, F.

AU - Taroian, S.

AU - Terkulov, A.

AU - Truty, R.

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 - Ye, Z.

AU - Yen, S.

AU - Zagrebelnyy, V.

AU - Zeiler, D.

AU - Zihlmann, B.

AU - Zupranski, P.

PY - 2012/3

Y1 - 2012/3

N2 - A measurement of the virtual-photon asymmetry A2(x,Q2) and of the spin-structure function g2(x,Q2) of the proton are presented for the kinematic range 0.00422<20 GeV2. The data were collected by the HERMES experiment at the HERA storage ring at DESY while studying inclusive deep-inelastic scattering of 27.6 GeV longitudinally polarized leptons off a transversely polarized hydrogen gas target. The results are consistent with previous experimental data from CERN and SLAC. For the x-range covered, the measured integral of g2(x) converges to the null result of the Burkhardt-Cottingham sum rule. The x2 moment of the twist-3 contribution to g2(x) is found to be compatible with zero.

AB - A measurement of the virtual-photon asymmetry A2(x,Q2) and of the spin-structure function g2(x,Q2) of the proton are presented for the kinematic range 0.00422<20 GeV2. The data were collected by the HERMES experiment at the HERA storage ring at DESY while studying inclusive deep-inelastic scattering of 27.6 GeV longitudinally polarized leptons off a transversely polarized hydrogen gas target. The results are consistent with previous experimental data from CERN and SLAC. For the x-range covered, the measured integral of g2(x) converges to the null result of the Burkhardt-Cottingham sum rule. The x2 moment of the twist-3 contribution to g2(x) is found to be compatible with zero.

UR - http://www.scopus.com/inward/record.url?scp=84862793415&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-012-1921-5

DO - 10.1140/epjc/s10052-012-1921-5

M3 - Article

AN - SCOPUS:84862793415

SN - 1434-6044

VL - 72

SP - 1

EP - 7

JO - European Physical Journal C

JF - European Physical Journal C

IS - 3

M1 - 1921

ER -

Measurement of the virtual-photon asymmetry A₂ and the spin-structure function g₂ of the proton

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