Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target

A. Airapetian; N. Akopov; Z. Akopov; M. Amarian; A. Andrus; E. C. Aschenauer; W. Augustyniak; R. Avakian; A. Avetissian; E. Avetissian; A. Bacchetta; 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; G. P. Capitani; M. Cappiluppi; T. Chen; G. Ciullo; M. Contalbrigo; P. F. Dalpiaz; R. De Leo; M. Demey; L. De Nardo; E. De Sanctis; E. Devitsin; P. Di Nezza; M. Düren; M. Ehrenfried; A. Elalaoui-Moulay; G. Elbakian; F. Ellinghaus; U. Elschenbroich; R. Fabbri; A. Fantoni; A. Fechtchenko; L. Felawka; S. Frullani; G. Gapienko; V. Gapienko; F. Garibaldi; K. Garrow; G. Gavrilov; V. Gharibyan; O. Grebeniouk; I. M. Gregor; C. Hadjidakis; K. Hafidi; M. Hartig; D. Hasch; M. Henoch; W. H.A. Hesselink; A. Hillenbrand; M. Hoek; Y. Holler; B. Hommez; I. Hristova; G. Iarygin; A. Ilyichev; 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. A. SHIBATA

doi:10.1103/PhysRevLett.94.012002

Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target

A. Airapetian, N. Akopov, Z. Akopov, M. Amarian, A. Andrus, E. C. Aschenauer, W. Augustyniak, R. Avakian, A. Avetissian, E. Avetissian, A. Bacchetta, P. Bailey, D. Balin, M. Beckmann, S. Belostotski, N. Bianchi, H. P. Blok, H. Böttcher, A. Borissov, A. BorysenkoM. Bouwhuis, A. Brüll, V. Bryzgalov, G. P. Capitani, M. Cappiluppi, T. Chen, G. Ciullo, M. Contalbrigo, P. F. Dalpiaz, R. De Leo, M. Demey, L. De Nardo, E. De Sanctis, E. Devitsin, P. Di Nezza, M. Düren, M. Ehrenfried, A. Elalaoui-Moulay, G. Elbakian, F. Ellinghaus, U. Elschenbroich, R. Fabbri, A. Fantoni, A. Fechtchenko, L. Felawka, S. Frullani, G. Gapienko, V. Gapienko, F. Garibaldi, K. Garrow, G. Gavrilov, V. Gharibyan, O. Grebeniouk, I. M. Gregor, C. Hadjidakis, K. Hafidi, M. Hartig, D. Hasch, M. Henoch, W. H.A. Hesselink, A. Hillenbrand, M. Hoek, Y. Holler, B. Hommez, I. Hristova, G. Iarygin, A. Ilyichev, 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. A. SHIBATA

Physics

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

Abstract

Single-spin asymmetries for semi-inclusive electroproduction of charged pions in deep-inelastic scattering of positrons are measured for the first time with transverse target polarization. The asymmetry depends on the azimuthal angles of both the pion (φ) and the target spin axis (φ_S) about the virtual-photon direction and relative to the lepton scattering plane. The extracted Fourier component 〈sin(φ + φ_S) 〉_UT ^π is a signal of the previously unmeasured quark transversity distribution, in conjunction with the Collins fragmentation function, also unknown. The component 〈sin(φ - φ_S〉 _UT ^π arises from a correlation between the transverse polarization of the target nucleon and the intrinsic transverse momentum of quarks, as represented by the previously unmeasured Sivers distribution function. Evidence for both signals is observed, but the Sivers asymmetry may be affected by exclusive vector meson production.

Original language	English (US)
Article number	012002
Pages (from-to)	1-6
Number of pages	6
Journal	Physical review letters
Volume	94
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.94.012002
State	Published - Jan 14 2005

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Physics and Astronomy(all)

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10.1103/PhysRevLett.94.012002

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Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Andrus, A., Aschenauer, E. C., Augustyniak, W., Avakian, R., Avetissian, A., Avetissian, E., Bacchetta, A., Bailey, P., Balin, D., Beckmann, M., Belostotski, S., Bianchi, N., Blok, H. P., Böttcher, H., Borissov, A., ... SHIBATA, T. A. (2005). Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target. Physical review letters, 94(1), 1-6. [012002]. https://doi.org/10.1103/PhysRevLett.94.012002

Airapetian, A, Akopov, N, Akopov, Z, Amarian, M, Andrus, A, Aschenauer, EC, Augustyniak, W, Avakian, R, Avetissian, A, Avetissian, E, Bacchetta, A, Bailey, P, Balin, D, Beckmann, M, Belostotski, S, Bianchi, N, Blok, HP, Böttcher, H, Borissov, A, Borysenko, A, Bouwhuis, M, Brüll, A, Bryzgalov, V, Capitani, GP, Cappiluppi, M, Chen, T, Ciullo, G, Contalbrigo, M, Dalpiaz, PF, De Leo, R, Demey, M, De Nardo, L, De Sanctis, E, Devitsin, E, Di Nezza, P, Düren, M, Ehrenfried, M, Elalaoui-Moulay, A, Elbakian, G, Ellinghaus, F, Elschenbroich, U, Fabbri, R, Fantoni, A, Fechtchenko, A, Felawka, L, Frullani, S, Gapienko, G, Gapienko, V, Garibaldi, F, Garrow, K, Gavrilov, G, Gharibyan, V, Grebeniouk, O, Gregor, IM, Hadjidakis, C, Hafidi, K, Hartig, M, Hasch, D, Henoch, M, Hesselink, WHA, Hillenbrand, A, Hoek, M, Holler, Y, Hommez, B, Hristova, I, Iarygin, G, Ilyichev, A, 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 & SHIBATA, TA 2005, 'Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target', Physical review letters, vol. 94, no. 1, 012002, pp. 1-6. https://doi.org/10.1103/PhysRevLett.94.012002

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title = "Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target",

abstract = "Single-spin asymmetries for semi-inclusive electroproduction of charged pions in deep-inelastic scattering of positrons are measured for the first time with transverse target polarization. The asymmetry depends on the azimuthal angles of both the pion (φ) and the target spin axis (φS) about the virtual-photon direction and relative to the lepton scattering plane. The extracted Fourier component 〈sin(φ + φS) 〉UT π is a signal of the previously unmeasured quark transversity distribution, in conjunction with the Collins fragmentation function, also unknown. The component 〈sin(φ - φS〉 UT π arises from a correlation between the transverse polarization of the target nucleon and the intrinsic transverse momentum of quarks, as represented by the previously unmeasured Sivers distribution function. Evidence for both signals is observed, but the Sivers asymmetry may be affected by exclusive vector meson production.",

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 A. Bacchetta 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 Capitani, {G. P.} and M. Cappiluppi and T. Chen and G. Ciullo and M. Contalbrigo and Dalpiaz, {P. F.} and {De Leo}, R. and M. Demey and {De Nardo}, L. and {De Sanctis}, E. and E. Devitsin and {Di Nezza}, P. 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 A. Fechtchenko and L. Felawka and S. Frullani and G. Gapienko and V. Gapienko and F. Garibaldi and K. Garrow 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 M. Henoch 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. Ilyichev 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 SHIBATA, {T. A.}",

year = "2005",

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day = "14",

doi = "10.1103/PhysRevLett.94.012002",

language = "English (US)",

volume = "94",

pages = "1--6",

journal = "Physical Review Letters",

issn = "0031-9007",

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TY - JOUR

T1 - Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target

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 - Bacchetta, A.

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 - Capitani, G. P.

AU - Cappiluppi, M.

AU - Chen, T.

AU - Ciullo, G.

AU - Contalbrigo, M.

AU - Dalpiaz, P. F.

AU - De Leo, R.

AU - Demey, M.

AU - De Nardo, L.

AU - De Sanctis, E.

AU - Devitsin, E.

AU - Di Nezza, P.

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 - Fechtchenko, A.

AU - Felawka, L.

AU - Frullani, S.

AU - Gapienko, G.

AU - Gapienko, V.

AU - Garibaldi, F.

AU - Garrow, K.

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 - Henoch, M.

AU - Hesselink, W. H.A.

AU - Hillenbrand, A.

AU - Hoek, M.

AU - Holler, Y.

AU - Hommez, B.

AU - Hristova, I.

AU - Iarygin, G.

AU - Ilyichev, A.

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.

AU - Krauss, B.

AU - Krivokhijine, V. G.

AU - Lagamba, L.

AU - Lapikás, L.

AU - Laziev, A.

AU - Lenisa, P.

AU - Liebing, P.

AU - Linden-Levy, L. A.

AU - Lorenzon, W.

AU - Lu, H.

AU - Lu, J.

AU - Lu, S.

AU - Ma, B. Q.

AU - Maiheu, B.

AU - Makins, N. C.R.

AU - Mao, Y.

AU - Marianski, B.

AU - Marukyan, H.

AU - Masoli, F.

AU - Mexner, V.

AU - Meyners, N.

AU - SHIBATA, T. A.

PY - 2005/1/14

Y1 - 2005/1/14

N2 - Single-spin asymmetries for semi-inclusive electroproduction of charged pions in deep-inelastic scattering of positrons are measured for the first time with transverse target polarization. The asymmetry depends on the azimuthal angles of both the pion (φ) and the target spin axis (φS) about the virtual-photon direction and relative to the lepton scattering plane. The extracted Fourier component 〈sin(φ + φS) 〉UT π is a signal of the previously unmeasured quark transversity distribution, in conjunction with the Collins fragmentation function, also unknown. The component 〈sin(φ - φS〉 UT π arises from a correlation between the transverse polarization of the target nucleon and the intrinsic transverse momentum of quarks, as represented by the previously unmeasured Sivers distribution function. Evidence for both signals is observed, but the Sivers asymmetry may be affected by exclusive vector meson production.

AB - Single-spin asymmetries for semi-inclusive electroproduction of charged pions in deep-inelastic scattering of positrons are measured for the first time with transverse target polarization. The asymmetry depends on the azimuthal angles of both the pion (φ) and the target spin axis (φS) about the virtual-photon direction and relative to the lepton scattering plane. The extracted Fourier component 〈sin(φ + φS) 〉UT π is a signal of the previously unmeasured quark transversity distribution, in conjunction with the Collins fragmentation function, also unknown. The component 〈sin(φ - φS〉 UT π arises from a correlation between the transverse polarization of the target nucleon and the intrinsic transverse momentum of quarks, as represented by the previously unmeasured Sivers distribution function. Evidence for both signals is observed, but the Sivers asymmetry may be affected by exclusive vector meson production.

UR - http://www.scopus.com/inward/record.url?scp=18144380384&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=18144380384&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.94.012002

DO - 10.1103/PhysRevLett.94.012002

M3 - Article

AN - SCOPUS:18144380384

SN - 0031-9007

VL - 94

SP - 1

EP - 6

JO - Physical Review Letters

JF - Physical Review Letters

IS - 1

M1 - 012002

ER -

Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target

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