Measurement of Single- and Double-Spin Asymmetries in Deep Inelastic Pion Electroproduction with a Longitudinally Polarized Target

CLAS Collaboration; H. Avakian; P. Bosted; V. D. Burkert; L. Elouadrhiri; K. P. Adhikari; M. Aghasyan; M. Amaryan; M. Anghinolfi; H. Baghdasaryan; J. Ball; M. Battaglieri; I. Bedlinskiy; A. S. Biselli; D. Branford; W. J. Briscoe; W. Brooks; D. S. Carman; L. Casey; P. L. Cole; P. Collins; D. Crabb; V. Crede; A. D'Angelo; A. Daniel; N. Dashyan; R. De Vita; E. De Sanctis; A. Deur; B. Dey; S. Dhamija; R. Dickson; C. Djalali; G. Dodge; D. Doughty; R. Dupre; A. El Alaoui; P. Eugenio; S. Fegan; R. Fersch; T. A. Forest; A. Fradi; M. Y. Gabrielyan; G. Gavalian; N. Gevorgyan; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; W. Gohn; R. W. Gothe; D. P. Watts

doi:10.1103/PhysRevLett.105.262002

Measurement of Single- and Double-Spin Asymmetries in Deep Inelastic Pion Electroproduction with a Longitudinally Polarized Target

CLAS Collaboration, H. Avakian, P. Bosted, V. D. Burkert, L. Elouadrhiri, K. P. Adhikari, M. Aghasyan, M. Amaryan, M. Anghinolfi, H. Baghdasaryan, J. Ball, M. Battaglieri, I. Bedlinskiy, A. S. Biselli, D. Branford, W. J. Briscoe, W. Brooks, D. S. Carman, L. Casey, P. L. ColeP. Collins, D. Crabb, V. Crede, A. D'Angelo, A. Daniel, N. Dashyan, R. De Vita, E. De Sanctis, A. Deur, B. Dey, S. Dhamija, R. Dickson, C. Djalali, G. Dodge, D. Doughty, R. Dupre, A. El Alaoui, P. Eugenio, S. Fegan, R. Fersch, T. A. Forest, A. Fradi, M. Y. Gabrielyan, G. Gavalian, N. Gevorgyan, G. P. Gilfoyle, K. L. Giovanetti, F. X. Girod, W. Gohn, R. W. Gothe, D. P. Watts

School of Physics and Astronomy

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

Abstract / Description of output

We report the first measurement of the transverse momentum dependence of double-spin asymmetries in semi-inclusive production of pions in deep-inelastic scattering off the longitudinally polarized proton. Data have been obtained using a polarized electron beam of 5.7 GeV with the CLAS detector at the Jefferson Lab (JLab). Modulations of single spin asymmetries over the azimuthal angle between lepton scattering and hadron production planes phi have been measured over a wide kinematic range in Bjorken x and virtual photon squared four-momentum Q(2). A significant nonzero sin2 phi single spin asymmetry was observed for the first time indicating strong spin-orbit correlations for transversely polarized quarks in the longitudinally polarized proton.

Original language	English
Article number	262002
Pages (from-to)	-
Number of pages	5
Journal	Physical Review Letters
Volume	105
Issue number	26
DOIs	https://doi.org/10.1103/PhysRevLett.105.262002
Publication status	Published - 22 Dec 2010

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10.1103/PhysRevLett.105.262002

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CLAS Collaboration, Avakian, H., Bosted, P., Burkert, V. D., Elouadrhiri, L., Adhikari, K. P., Aghasyan, M., Amaryan, M., Anghinolfi, M., Baghdasaryan, H., Ball, J., Battaglieri, M., Bedlinskiy, I., Biselli, A. S., Branford, D., Briscoe, W. J., Brooks, W., Carman, D. S., Casey, L., ... Watts, D. P. (2010). Measurement of Single- and Double-Spin Asymmetries in Deep Inelastic Pion Electroproduction with a Longitudinally Polarized Target. Physical Review Letters, 105(26), -. Article 262002. https://doi.org/10.1103/PhysRevLett.105.262002

@article{37dc5fea464b4531bcd631b109b5f6c0,

title = "Measurement of Single- and Double-Spin Asymmetries in Deep Inelastic Pion Electroproduction with a Longitudinally Polarized Target",

abstract = "We report the first measurement of the transverse momentum dependence of double-spin asymmetries in semi-inclusive production of pions in deep-inelastic scattering off the longitudinally polarized proton. Data have been obtained using a polarized electron beam of 5.7 GeV with the CLAS detector at the Jefferson Lab (JLab). Modulations of single spin asymmetries over the azimuthal angle between lepton scattering and hadron production planes phi have been measured over a wide kinematic range in Bjorken x and virtual photon squared four-momentum Q(2). A significant nonzero sin2 phi single spin asymmetry was observed for the first time indicating strong spin-orbit correlations for transversely polarized quarks in the longitudinally polarized proton.",

author = "{CLAS Collaboration} and H. Avakian and P. Bosted and Burkert, {V. D.} and L. Elouadrhiri and Adhikari, {K. P.} and M. Aghasyan and M. Amaryan and M. Anghinolfi and H. Baghdasaryan and J. Ball and M. Battaglieri and I. Bedlinskiy and Biselli, {A. S.} and D. Branford and Briscoe, {W. J.} and W. Brooks and Carman, {D. S.} and L. Casey and Cole, {P. L.} and P. Collins and D. Crabb and V. Crede and A. D'Angelo and A. Daniel and N. Dashyan and {De Vita}, R. and {De Sanctis}, E. and A. Deur and B. Dey and S. Dhamija and R. Dickson and C. Djalali and G. Dodge and D. Doughty and R. Dupre and {El Alaoui}, A. and P. Eugenio and S. Fegan and R. Fersch and Forest, {T. A.} and A. Fradi and Gabrielyan, {M. Y.} and G. Gavalian and N. Gevorgyan and Gilfoyle, {G. P.} and Giovanetti, {K. L.} and Girod, {F. X.} and W. Gohn and Gothe, {R. W.} and Watts, {D. P.}",

year = "2010",

month = dec,

day = "22",

doi = "10.1103/PhysRevLett.105.262002",

language = "English",

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journal = "Physical Review Letters",

issn = "0031-9007",

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CLAS Collaboration, Avakian, H, Bosted, P, Burkert, VD, Elouadrhiri, L, Adhikari, KP, Aghasyan, M, Amaryan, M, Anghinolfi, M, Baghdasaryan, H, Ball, J, Battaglieri, M, Bedlinskiy, I, Biselli, AS, Branford, D, Briscoe, WJ, Brooks, W, Carman, DS, Casey, L, Cole, PL, Collins, P, Crabb, D, Crede, V, D'Angelo, A, Daniel, A, Dashyan, N, De Vita, R, De Sanctis, E, Deur, A, Dey, B, Dhamija, S, Dickson, R, Djalali, C, Dodge, G, Doughty, D, Dupre, R, El Alaoui, A, Eugenio, P, Fegan, S, Fersch, R, Forest, TA, Fradi, A, Gabrielyan, MY, Gavalian, G, Gevorgyan, N, Gilfoyle, GP, Giovanetti, KL, Girod, FX, Gohn, W, Gothe, RW & Watts, DP 2010, 'Measurement of Single- and Double-Spin Asymmetries in Deep Inelastic Pion Electroproduction with a Longitudinally Polarized Target', Physical Review Letters, vol. 105, no. 26, 262002, pp. -. https://doi.org/10.1103/PhysRevLett.105.262002

TY - JOUR

T1 - Measurement of Single- and Double-Spin Asymmetries in Deep Inelastic Pion Electroproduction with a Longitudinally Polarized Target

AU - CLAS Collaboration

AU - Avakian, H.

AU - Bosted, P.

AU - Burkert, V. D.

AU - Elouadrhiri, L.

AU - Adhikari, K. P.

AU - Aghasyan, M.

AU - Amaryan, M.

AU - Anghinolfi, M.

AU - Baghdasaryan, H.

AU - Ball, J.

AU - Battaglieri, M.

AU - Bedlinskiy, I.

AU - Biselli, A. S.

AU - Branford, D.

AU - Briscoe, W. J.

AU - Brooks, W.

AU - Carman, D. S.

AU - Casey, L.

AU - Cole, P. L.

AU - Collins, P.

AU - Crabb, D.

AU - Crede, V.

AU - D'Angelo, A.

AU - Daniel, A.

AU - Dashyan, N.

AU - De Vita, R.

AU - De Sanctis, E.

AU - Deur, A.

AU - Dey, B.

AU - Dhamija, S.

AU - Dickson, R.

AU - Djalali, C.

AU - Dodge, G.

AU - Doughty, D.

AU - Dupre, R.

AU - El Alaoui, A.

AU - Eugenio, P.

AU - Fegan, S.

AU - Fersch, R.

AU - Forest, T. A.

AU - Fradi, A.

AU - Gabrielyan, M. Y.

AU - Gavalian, G.

AU - Gevorgyan, N.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Girod, F. X.

AU - Gohn, W.

AU - Gothe, R. W.

AU - Watts, D. P.

PY - 2010/12/22

Y1 - 2010/12/22

N2 - We report the first measurement of the transverse momentum dependence of double-spin asymmetries in semi-inclusive production of pions in deep-inelastic scattering off the longitudinally polarized proton. Data have been obtained using a polarized electron beam of 5.7 GeV with the CLAS detector at the Jefferson Lab (JLab). Modulations of single spin asymmetries over the azimuthal angle between lepton scattering and hadron production planes phi have been measured over a wide kinematic range in Bjorken x and virtual photon squared four-momentum Q(2). A significant nonzero sin2 phi single spin asymmetry was observed for the first time indicating strong spin-orbit correlations for transversely polarized quarks in the longitudinally polarized proton.

AB - We report the first measurement of the transverse momentum dependence of double-spin asymmetries in semi-inclusive production of pions in deep-inelastic scattering off the longitudinally polarized proton. Data have been obtained using a polarized electron beam of 5.7 GeV with the CLAS detector at the Jefferson Lab (JLab). Modulations of single spin asymmetries over the azimuthal angle between lepton scattering and hadron production planes phi have been measured over a wide kinematic range in Bjorken x and virtual photon squared four-momentum Q(2). A significant nonzero sin2 phi single spin asymmetry was observed for the first time indicating strong spin-orbit correlations for transversely polarized quarks in the longitudinally polarized proton.

UR - http://www.scopus.com/inward/record.url?scp=78650465117&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.105.262002

DO - 10.1103/PhysRevLett.105.262002

M3 - Article

SN - 0031-9007

VL - 105

SP - -

JO - Physical Review Letters

JF - Physical Review Letters

IS - 26

M1 - 262002

ER -

Measurement of Single- and Double-Spin Asymmetries in Deep Inelastic Pion Electroproduction with a Longitudinally Polarized Target

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Illuminating strongly interacting matter

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Measurement of Single- and Double-Spin Asymmetries in Deep Inelastic Pion Electroproduction with a Longitudinally Polarized Target

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