Beam-helicity asymmetries in double-charged-pion photoproduction on the proton

S. Strauch; B. L. Berman; G. Adams; P. Ambrozewicz; M. Anghinolfi; B. Asavapibhop; G. Asryan; G. Audit; H. Avakian; H. Bagdasaryan; N. Baillie; J. P. Ball; N. A. Baltzell; S. Barrow; V. Batourine; M. Battaglieri; K. Beard; I. Bedlinskiy; M. Bektasoglu; M. Bellis; N. Benmouna; C. Bennhold; A. S. Biselli; S. Boiarinov; S. Bouchigny; R. Bradford; D. Branford; W. J. Briscoe; W. K. Brooks; S. Bültmann; V. D. Burkert; C. Butuceanu; J. R. Calarco; S. L. Careccia; D. S. Carman; B. Carnahan; S. Chen; P. L. Cole; A. Coleman; P. Coltharp; D. Cords; P. Corvisiero; D. Crabb; H. Crannell; J. P. Cummings; P. V. Degtyarenko; H. Denizli; L. Dennis; E. De Sanctis; A. Deur; R. Devita; K. V. Dharmawardane; K. S. Dhuga; C. Djalali; G. E. Dodge; J. Donnelly; D. Doughty; P. Dragovitsch; Michael Dugger; S. Dytman; O. P. Dzyubak; H. Egiyan; K. S. Egiyan; L. Elouadrhiri; A. Empl; P. Eugenio; R. Fatemi; G. Fedotov; G. Feldman; R. J. Feuerbach; A. Fix; T. A. Forest; H. Funsten; G. Gavalian; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; J. T. Goetz; R. W. Gothe; K. A. Griffioen; M. Guidal; N. Guler; L. Guo; V. Gyurjyan; C. Hadjidakis; R. S. Hakobyan; J. Hardie; D. Heddle; F. W. Hersman; K. Hicks; I. Hleiqawi; M. Holtrop; J. Hu; M. Huertas; C. E. Hyde-Wright; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; M. M. Ito

doi:10.1103/PhysRevLett.95.162003

Beam-helicity asymmetries in double-charged-pion photoproduction on the proton

S. Strauch, B. L. Berman, G. Adams, P. Ambrozewicz, M. Anghinolfi, B. Asavapibhop, G. Asryan, G. Audit, H. Avakian, H. Bagdasaryan, N. Baillie, J. P. Ball, N. A. Baltzell, S. Barrow, V. Batourine, M. Battaglieri, K. Beard, I. Bedlinskiy, M. Bektasoglu, M. BellisN. Benmouna, C. Bennhold, A. S. Biselli, S. Boiarinov, S. Bouchigny, R. Bradford, D. Branford, W. J. Briscoe, W. K. Brooks, S. Bültmann, V. D. Burkert, C. Butuceanu, J. R. Calarco, S. L. Careccia, D. S. Carman, B. Carnahan, S. Chen, P. L. Cole, A. Coleman, P. Coltharp, D. Cords, P. Corvisiero, D. Crabb, H. Crannell, J. P. Cummings, P. V. Degtyarenko, H. Denizli, L. Dennis, E. De Sanctis, A. Deur, R. Devita, K. V. Dharmawardane, K. S. Dhuga, C. Djalali, G. E. Dodge, J. Donnelly, D. Doughty, P. Dragovitsch, Michael Dugger, S. Dytman, O. P. Dzyubak, H. Egiyan, K. S. Egiyan, L. Elouadrhiri, A. Empl, P. Eugenio, R. Fatemi, G. Fedotov, G. Feldman, R. J. Feuerbach, A. Fix, T. A. Forest, H. Funsten, G. Gavalian, G. P. Gilfoyle, K. L. Giovanetti, F. X. Girod, J. T. Goetz, R. W. Gothe, K. A. Griffioen, M. Guidal, N. Guler, L. Guo, V. Gyurjyan, C. Hadjidakis, R. S. Hakobyan, J. Hardie, D. Heddle, F. W. Hersman, K. Hicks, I. Hleiqawi, M. Holtrop, J. Hu, M. Huertas, C. E. Hyde-Wright, Y. Ilieva, D. G. Ireland, B. S. Ishkhanov, M. M. Ito

Physics

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Abstract

Beam-helicity asymmetries for the two-pion-photoproduction reaction Y→p∏+∏+ have been studied for the first time in the resonance region for center-of-mass energies between 1.35 and 2.30 GeV. The experiment was performed at Jefferson Lab with the CEBAF Large Acceptance Spectrometer using circularly polarized tagged photons incident on an unpolarized hydrogen target. Beam-helicity-dependent angular distributions of the final-state particles were measured. The large cross-section asymmetries exhibit strong sensitivity to the kinematics and dynamics of the reaction. The data are compared with the results of various phenomenological model calculations, and show that these models currently do not provide an adequate description for the behavior of this new observable.

Original language	English (US)
Article number	162003
Journal	Physical Review Letters
Volume	95
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.95.162003
State	Published - Oct 14 2005

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.95.162003

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Strauch, S., Berman, B. L., Adams, G., Ambrozewicz, P., Anghinolfi, M., Asavapibhop, B., Asryan, G., Audit, G., Avakian, H., Bagdasaryan, H., Baillie, N., Ball, J. P., Baltzell, N. A., Barrow, S., Batourine, V., Battaglieri, M., Beard, K., Bedlinskiy, I., Bektasoglu, M., ... Ito, M. M. (2005). Beam-helicity asymmetries in double-charged-pion photoproduction on the proton. Physical Review Letters, 95(16), Article 162003. https://doi.org/10.1103/PhysRevLett.95.162003

Strauch, S, Berman, BL, Adams, G, Ambrozewicz, P, Anghinolfi, M, Asavapibhop, B, Asryan, G, Audit, G, Avakian, H, Bagdasaryan, H, Baillie, N, Ball, JP, Baltzell, NA, Barrow, S, Batourine, V, Battaglieri, M, Beard, K, Bedlinskiy, I, Bektasoglu, M, Bellis, M, Benmouna, N, Bennhold, C, Biselli, AS, Boiarinov, S, Bouchigny, S, Bradford, R, Branford, D, Briscoe, WJ, Brooks, WK, Bültmann, S, Burkert, VD, Butuceanu, C, Calarco, JR, Careccia, SL, Carman, DS, Carnahan, B, Chen, S, Cole, PL, Coleman, A, Coltharp, P, Cords, D, Corvisiero, P, Crabb, D, Crannell, H, Cummings, JP, Degtyarenko, PV, Denizli, H, Dennis, L, De Sanctis, E, Deur, A, Devita, R, Dharmawardane, KV, Dhuga, KS, Djalali, C, Dodge, GE, Donnelly, J, Doughty, D, Dragovitsch, P, Dugger, M, Dytman, S, Dzyubak, OP, Egiyan, H, Egiyan, KS, Elouadrhiri, L, Empl, A, Eugenio, P, Fatemi, R, Fedotov, G, Feldman, G, Feuerbach, RJ, Fix, A, Forest, TA, Funsten, H, Gavalian, G, Gilfoyle, GP, Giovanetti, KL, Girod, FX, Goetz, JT, Gothe, RW, Griffioen, KA, Guidal, M, Guler, N, Guo, L, Gyurjyan, V, Hadjidakis, C, Hakobyan, RS, Hardie, J, Heddle, D, Hersman, FW, Hicks, K, Hleiqawi, I, Holtrop, M, Hu, J, Huertas, M, Hyde-Wright, CE, Ilieva, Y, Ireland, DG, Ishkhanov, BS & Ito, MM 2005, 'Beam-helicity asymmetries in double-charged-pion photoproduction on the proton', Physical Review Letters, vol. 95, no. 16, 162003. https://doi.org/10.1103/PhysRevLett.95.162003

@article{ca612d1bcfdb4226bd16ef33cb987055,

title = "Beam-helicity asymmetries in double-charged-pion photoproduction on the proton",

abstract = "Beam-helicity asymmetries for the two-pion-photoproduction reaction Y→p∏+∏+ have been studied for the first time in the resonance region for center-of-mass energies between 1.35 and 2.30 GeV. The experiment was performed at Jefferson Lab with the CEBAF Large Acceptance Spectrometer using circularly polarized tagged photons incident on an unpolarized hydrogen target. Beam-helicity-dependent angular distributions of the final-state particles were measured. The large cross-section asymmetries exhibit strong sensitivity to the kinematics and dynamics of the reaction. The data are compared with the results of various phenomenological model calculations, and show that these models currently do not provide an adequate description for the behavior of this new observable.",

author = "S. Strauch and Berman, {B. L.} and G. Adams and P. Ambrozewicz and M. Anghinolfi and B. Asavapibhop and G. Asryan and G. Audit and H. Avakian and H. Bagdasaryan and N. Baillie and Ball, {J. P.} and Baltzell, {N. A.} and S. Barrow and V. Batourine and M. Battaglieri and K. Beard and I. Bedlinskiy and M. Bektasoglu and M. Bellis and N. Benmouna and C. Bennhold and Biselli, {A. S.} and S. Boiarinov and S. Bouchigny and R. Bradford and D. Branford and Briscoe, {W. J.} and Brooks, {W. K.} and S. B{\"u}ltmann and Burkert, {V. D.} and C. Butuceanu and Calarco, {J. R.} and Careccia, {S. L.} and Carman, {D. S.} and B. Carnahan and S. Chen and Cole, {P. L.} and A. Coleman and P. Coltharp and D. Cords and P. Corvisiero and D. Crabb and H. Crannell and Cummings, {J. P.} and Degtyarenko, {P. V.} and H. Denizli and L. Dennis and {De Sanctis}, E. and A. Deur and R. Devita and Dharmawardane, {K. V.} and Dhuga, {K. S.} and C. Djalali and Dodge, {G. E.} and J. Donnelly and D. Doughty and P. Dragovitsch and Michael Dugger and S. Dytman and Dzyubak, {O. P.} and H. Egiyan and Egiyan, {K. S.} and L. Elouadrhiri and A. Empl and P. Eugenio and R. Fatemi and G. Fedotov and G. Feldman and Feuerbach, {R. J.} and A. Fix and Forest, {T. A.} and H. Funsten and G. Gavalian and Gilfoyle, {G. P.} and Giovanetti, {K. L.} and Girod, {F. X.} and Goetz, {J. T.} and Gothe, {R. W.} and Griffioen, {K. A.} and M. Guidal and N. Guler and L. Guo and V. Gyurjyan and C. Hadjidakis and Hakobyan, {R. S.} and J. Hardie and D. Heddle and Hersman, {F. W.} and K. Hicks and I. Hleiqawi and M. Holtrop and J. Hu and M. Huertas and Hyde-Wright, {C. E.} and Y. Ilieva and Ireland, {D. G.} and Ishkhanov, {B. S.} and Ito, {M. M.}",

year = "2005",

month = oct,

day = "14",

doi = "10.1103/PhysRevLett.95.162003",

language = "English (US)",

volume = "95",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "16",

}

TY - JOUR

T1 - Beam-helicity asymmetries in double-charged-pion photoproduction on the proton

AU - Strauch, S.

AU - Berman, B. L.

AU - Adams, G.

AU - Ambrozewicz, P.

AU - Anghinolfi, M.

AU - Asavapibhop, B.

AU - Asryan, G.

AU - Audit, G.

AU - Avakian, H.

AU - Bagdasaryan, H.

AU - Baillie, N.

AU - Ball, J. P.

AU - Baltzell, N. A.

AU - Barrow, S.

AU - Batourine, V.

AU - Battaglieri, M.

AU - Beard, K.

AU - Bedlinskiy, I.

AU - Bektasoglu, M.

AU - Bellis, M.

AU - Benmouna, N.

AU - Bennhold, C.

AU - Biselli, A. S.

AU - Boiarinov, S.

AU - Bouchigny, S.

AU - Bradford, R.

AU - Branford, D.

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Bültmann, S.

AU - Burkert, V. D.

AU - Butuceanu, C.

AU - Calarco, J. R.

AU - Careccia, S. L.

AU - Carman, D. S.

AU - Carnahan, B.

AU - Chen, S.

AU - Cole, P. L.

AU - Coleman, A.

AU - Coltharp, P.

AU - Cords, D.

AU - Corvisiero, P.

AU - Crabb, D.

AU - Crannell, H.

AU - Cummings, J. P.

AU - Degtyarenko, P. V.

AU - Denizli, H.

AU - Dennis, L.

AU - De Sanctis, E.

AU - Deur, A.

AU - Devita, R.

AU - Dharmawardane, K. V.

AU - Dhuga, K. S.

AU - Djalali, C.

AU - Dodge, G. E.

AU - Donnelly, J.

AU - Doughty, D.

AU - Dragovitsch, P.

AU - Dugger, Michael

AU - Dytman, S.

AU - Dzyubak, O. P.

AU - Egiyan, H.

AU - Egiyan, K. S.

AU - Elouadrhiri, L.

AU - Empl, A.

AU - Eugenio, P.

AU - Fatemi, R.

AU - Fedotov, G.

AU - Feldman, G.

AU - Feuerbach, R. J.

AU - Fix, A.

AU - Forest, T. A.

AU - Funsten, H.

AU - Gavalian, G.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Girod, F. X.

AU - Goetz, J. T.

AU - Gothe, R. W.

AU - Griffioen, K. A.

AU - Guidal, M.

AU - Guler, N.

AU - Guo, L.

AU - Gyurjyan, V.

AU - Hadjidakis, C.

AU - Hakobyan, R. S.

AU - Hardie, J.

AU - Heddle, D.

AU - Hersman, F. W.

AU - Hicks, K.

AU - Hleiqawi, I.

AU - Holtrop, M.

AU - Hu, J.

AU - Huertas, M.

AU - Hyde-Wright, C. E.

AU - Ilieva, Y.

AU - Ireland, D. G.

AU - Ishkhanov, B. S.

AU - Ito, M. M.

PY - 2005/10/14

Y1 - 2005/10/14

N2 - Beam-helicity asymmetries for the two-pion-photoproduction reaction Y→p∏+∏+ have been studied for the first time in the resonance region for center-of-mass energies between 1.35 and 2.30 GeV. The experiment was performed at Jefferson Lab with the CEBAF Large Acceptance Spectrometer using circularly polarized tagged photons incident on an unpolarized hydrogen target. Beam-helicity-dependent angular distributions of the final-state particles were measured. The large cross-section asymmetries exhibit strong sensitivity to the kinematics and dynamics of the reaction. The data are compared with the results of various phenomenological model calculations, and show that these models currently do not provide an adequate description for the behavior of this new observable.

AB - Beam-helicity asymmetries for the two-pion-photoproduction reaction Y→p∏+∏+ have been studied for the first time in the resonance region for center-of-mass energies between 1.35 and 2.30 GeV. The experiment was performed at Jefferson Lab with the CEBAF Large Acceptance Spectrometer using circularly polarized tagged photons incident on an unpolarized hydrogen target. Beam-helicity-dependent angular distributions of the final-state particles were measured. The large cross-section asymmetries exhibit strong sensitivity to the kinematics and dynamics of the reaction. The data are compared with the results of various phenomenological model calculations, and show that these models currently do not provide an adequate description for the behavior of this new observable.

UR - http://www.scopus.com/inward/record.url?scp=28844490634&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=28844490634&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.95.162003

DO - 10.1103/PhysRevLett.95.162003

M3 - Article

AN - SCOPUS:28844490634

SN - 0031-9007

VL - 95

JO - Physical Review Letters

JF - Physical Review Letters

IS - 16

M1 - 162003

ER -

Beam-helicity asymmetries in double-charged-pion photoproduction on the proton

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