Beam-Target Helicity Asymmetry for →γ→n→π−p in the N∗Resonance Region

D. Ho; P. Peng; C. Bass; P. Collins; A. D'Angelo; A. Deur; J. Fleming; C. Hanretty; T. Kageya; M. Khandaker; F. J. Klein; E. Klempt; V. Laine; M. M. Lowry; H. Lu; C. Nepali; V. A. Nikonov; T. O'Connell; A. M. Sandorfi; A. V. Sarantsev; R. A. Schumacher; I. I. Strakovsky; A. Svarc; N. K. Walford; X. Wei; C. S. Whisnant; R. L. Workman; I. Zonta; K. P. Adhikari; D. Adikaram; Z. Akbar; M. J. Amaryan; S. Anefalos Pereira; H. Avakian; J. Ball; M. Bashkanov; M. Battaglieri; V. Batourine; I. Bedlinskiy; A. Biselli; W. J. Briscoe; V. D. Burkert; D. S. Carman; A. Celentano; G. Charles; T. Chetry; G. Ciullo; L. Clark; L. Colaneri; P. L. Cole; M. Contalbrigo; V. Crede; N. Dashyan; E. De Sanctis; R. De Vita; C. Djalali; R. Dupre; A. El Alaoui; L. El Fassi; L. Elouadrhiri; P. Eugenio; G. Fedotov; S. Fegan; R. Fersch; A. Filippi; A. Fradi; Y. Ghandilyan; G. P. Gilfoyle; F. X. Girod; D. I. Glazier; C. Gleason; W. Gohn; E. Golovatch; R. W. Gothe; K. A. Griffioen; M. Guidal; L. Guo; H. Hakobyan; N. Harrison; M. Hattawy; K. Hicks; M. Holtrop; S. M. Hughes; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; E. L. Isupov; D. Jenkins; H. Jiang; H. S. Jo; K. Joo; S. Joosten; D. Keller; G. Khachatryan; A. Kim; W. Kim; A. Klein; V. Kubarovsky; S. V. Kuleshov; L. Lanza; P. Lenisa; K. Livingston; I. J. D. MacGregor; N. Markov; B. McKinnon; T. Mineeva; V. Mokeev; R. A. Montgomery; A. Movsisyan; C. Munoz Camacho; G. Murdoch; S. Niccolai; G. Niculescu; M. Osipenko; M. Paolone; R. Paremuzyan; K. Park; E. Pasyuk; W. Phelps; O. Pogorelko; J. W. Price; S. Procureur; D. Protopopescu; M. Ripani; D. Riser; B. G. Ritchie; A. Rizzo; G. Rosner; F. Sabatie; C. Salgado; Y. G. Sharabian; Iu. Skorodumina; G. D. Smith; D. I. Sober; D. Sokhan; N. Sparveris; S. Strauch; Ye Tian; B. Torayev; M. Ungaro; H. Voskanyan; E. Voutier; D. P. Watts; M. H. Wood; N. Zachariou; J. Zhang; Z. W. Zhao; C. L. A. S. Collaboration

doi:10.1103/PhysRevLett.118.242002

Beam-Target Helicity Asymmetry for →γ→n→π−p in the N∗Resonance Region

D. Ho, P. Peng, C. Bass, P. Collins, A. D'Angelo, A. Deur, J. Fleming, C. Hanretty, T. Kageya, M. Khandaker, F. J. Klein, E. Klempt, V. Laine, M. M. Lowry, H. Lu, C. Nepali, V. A. Nikonov, T. O'Connell, A. M. Sandorfi, A. V. SarantsevR. A. Schumacher, I. I. Strakovsky, A. Svarc, N. K. Walford, X. Wei, C. S. Whisnant, R. L. Workman, I. Zonta, K. P. Adhikari, D. Adikaram, Z. Akbar, M. J. Amaryan, S. Anefalos Pereira, H. Avakian, J. Ball, M. Bashkanov, M. Battaglieri, V. Batourine, I. Bedlinskiy, A. Biselli, W. J. Briscoe, V. D. Burkert, D. S. Carman, A. Celentano, G. Charles, T. Chetry, G. Ciullo, L. Clark, L. Colaneri, P. L. Cole, M. Contalbrigo, V. Crede, N. Dashyan, E. De Sanctis, R. De Vita, C. Djalali, R. Dupre, A. El Alaoui, L. El Fassi, L. Elouadrhiri, P. Eugenio, G. Fedotov, S. Fegan, R. Fersch, A. Filippi, A. Fradi, Y. Ghandilyan, G. P. Gilfoyle, F. X. Girod, D. I. Glazier, C. Gleason, W. Gohn, E. Golovatch, R. W. Gothe, K. A. Griffioen, M. Guidal, L. Guo, H. Hakobyan, N. Harrison, M. Hattawy, K. Hicks, M. Holtrop, S. M. Hughes, Y. Ilieva, D. G. Ireland, B. S. Ishkhanov, E. L. Isupov, D. Jenkins, H. Jiang, H. S. Jo, K. Joo, S. Joosten, D. Keller, G. Khachatryan, A. Kim, W. Kim, A. Klein, V. Kubarovsky, S. V. Kuleshov, L. Lanza, P. Lenisa, K. Livingston, I. J. D. MacGregor, N. Markov, B. McKinnon, T. Mineeva, V. Mokeev, R. A. Montgomery, A. Movsisyan, C. Munoz Camacho, G. Murdoch, S. Niccolai, G. Niculescu, M. Osipenko, M. Paolone, R. Paremuzyan, K. Park, E. Pasyuk, W. Phelps, O. Pogorelko, J. W. Price, S. Procureur, D. Protopopescu, M. Ripani, D. Riser, B. G. Ritchie, A. Rizzo, G. Rosner, F. Sabatie, C. Salgado, Y. G. Sharabian, Iu. Skorodumina, G. D. Smith, D. I. Sober, D. Sokhan, N. Sparveris, S. Strauch, Ye Tian, B. Torayev, M. Ungaro, H. Voskanyan, E. Voutier, D. P. Watts, M. H. Wood, N. Zachariou, J. Zhang, Z. W. Zhao, C. L. A. S. Collaboration

School of Physics and Astronomy

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

Abstract / Description of output

We report the first beam-target double-polarization asymmetries in the gamma+n(p)->pi(-)+p(p) reaction spanning the nucleon resonance region from invariant mass W=1500 to 2300 MeV. Circularly polarized photons and longitudinally polarized deuterons in solid hydrogen deuteride (HD) have been used with the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. The exclusive final state has been extracted using three very different analyses that show excellent agreement, and these have been used to deduce the E polarization observable for an effective neutron target. These results have been incorporated into new partial wave analyses and have led to significant revisions for several gamma nN* resonance photocouplings.

Original language	English
Article number	242002
Number of pages	6
Journal	Physical Review Letters
Volume	118
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.118.242002
Publication status	Published - 16 Jun 2017

Keywords / Materials (for Non-textual outputs)

HD TARGETS
BREMSSTRAHLUNG
AMPLITUDES
CRYOSTAT
PHOTON
SPIN
CLAS

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10.1103/PhysRevLett.118.242002

PhysRevLett.118.242002Final published version, 910 KB

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.118.242002

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Ho, D., Peng, P., Bass, C., Collins, P., D'Angelo, A., Deur, A., Fleming, J., Hanretty, C., Kageya, T., Khandaker, M., Klein, F. J., Klempt, E., Laine, V., Lowry, M. M., Lu, H., Nepali, C., Nikonov, V. A., O'Connell, T., Sandorfi, A. M., ... Collaboration, C. L. A. S. (2017). Beam-Target Helicity Asymmetry for →γ→n→π−p in the N∗Resonance Region. Physical Review Letters, 118(24), Article 242002. https://doi.org/10.1103/PhysRevLett.118.242002

@article{e10624128d0c4c858c4375f037abd01e,

title = "Beam-Target Helicity Asymmetry for →γ→n→π−p in the N∗Resonance Region",

abstract = "We report the first beam-target double-polarization asymmetries in the gamma+n(p)->pi(-)+p(p) reaction spanning the nucleon resonance region from invariant mass W=1500 to 2300 MeV. Circularly polarized photons and longitudinally polarized deuterons in solid hydrogen deuteride (HD) have been used with the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. The exclusive final state has been extracted using three very different analyses that show excellent agreement, and these have been used to deduce the E polarization observable for an effective neutron target. These results have been incorporated into new partial wave analyses and have led to significant revisions for several gamma nN* resonance photocouplings.",

keywords = "HD TARGETS, BREMSSTRAHLUNG, AMPLITUDES, CRYOSTAT, PHOTON, SPIN, CLAS",

author = "D. Ho and P. Peng and C. Bass and P. Collins and A. D'Angelo and A. Deur and J. Fleming and C. Hanretty and T. Kageya and M. Khandaker and Klein, {F. J.} and E. Klempt and V. Laine and Lowry, {M. M.} and H. Lu and C. Nepali and Nikonov, {V. A.} and T. O'Connell and Sandorfi, {A. M.} and Sarantsev, {A. V.} and Schumacher, {R. A.} and Strakovsky, {I. I.} and A. Svarc and Walford, {N. K.} and X. Wei and Whisnant, {C. S.} and Workman, {R. L.} and I. Zonta and Adhikari, {K. P.} and D. Adikaram and Z. Akbar and Amaryan, {M. J.} and Pereira, {S. Anefalos} and H. Avakian and J. Ball and M. Bashkanov and M. Battaglieri and V. Batourine and I. Bedlinskiy and A. Biselli and Briscoe, {W. J.} and Burkert, {V. D.} and Carman, {D. S.} and A. Celentano and G. Charles and T. Chetry and G. Ciullo and L. Clark and L. Colaneri and Cole, {P. L.} and M. Contalbrigo and V. Crede and N. Dashyan and {De Sanctis}, E. and {De Vita}, R. and C. Djalali and R. Dupre and {El Alaoui}, A. and {El Fassi}, L. and L. Elouadrhiri and P. Eugenio and G. Fedotov and S. Fegan and R. Fersch and A. Filippi and A. Fradi and Y. Ghandilyan and Gilfoyle, {G. P.} and Girod, {F. X.} and Glazier, {D. I.} and C. Gleason and W. Gohn and E. Golovatch and Gothe, {R. W.} and Griffioen, {K. A.} and M. Guidal and L. Guo and H. Hakobyan and N. Harrison and M. Hattawy and K. Hicks and M. Holtrop and Hughes, {S. M.} and Y. Ilieva and Ireland, {D. G.} and Ishkhanov, {B. S.} and Isupov, {E. L.} and D. Jenkins and H. Jiang and Jo, {H. S.} and K. Joo and S. Joosten and D. Keller and G. Khachatryan and A. Kim and W. Kim and A. Klein and V. Kubarovsky and Kuleshov, {S. V.} and L. Lanza and P. Lenisa and K. Livingston and MacGregor, {I. J. D.} and N. Markov and B. McKinnon and T. Mineeva and V. Mokeev and Montgomery, {R. A.} and A. Movsisyan and Camacho, {C. Munoz} and G. Murdoch and S. Niccolai and G. Niculescu and M. Osipenko and M. Paolone and R. Paremuzyan and K. Park and E. Pasyuk and W. Phelps and O. Pogorelko and Price, {J. W.} and S. Procureur and D. Protopopescu and M. Ripani and D. Riser and Ritchie, {B. G.} and A. Rizzo and G. Rosner and F. Sabatie and C. Salgado and Sharabian, {Y. G.} and Iu. Skorodumina and Smith, {G. D.} and Sober, {D. I.} and D. Sokhan and N. Sparveris and S. Strauch and Ye Tian and B. Torayev and M. Ungaro and H. Voskanyan and E. Voutier and Watts, {D. P.} and Wood, {M. H.} and N. Zachariou and J. Zhang and Zhao, {Z. W.} and Collaboration, {C. L. A. S.}",

year = "2017",

month = jun,

day = "16",

doi = "10.1103/PhysRevLett.118.242002",

language = "English",

volume = "118",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "24",

}

Ho, D, Peng, P, Bass, C, Collins, P, D'Angelo, A, Deur, A, Fleming, J, Hanretty, C, Kageya, T, Khandaker, M, Klein, FJ, Klempt, E, Laine, V, Lowry, MM, Lu, H, Nepali, C, Nikonov, VA, O'Connell, T, Sandorfi, AM, Sarantsev, AV, Schumacher, RA, Strakovsky, II, Svarc, A, Walford, NK, Wei, X, Whisnant, CS, Workman, RL, Zonta, I, Adhikari, KP, Adikaram, D, Akbar, Z, Amaryan, MJ, Pereira, SA, Avakian, H, Ball, J, Bashkanov, M, Battaglieri, M, Batourine, V, Bedlinskiy, I, Biselli, A, Briscoe, WJ, Burkert, VD, Carman, DS, Celentano, A, Charles, G, Chetry, T, Ciullo, G, Clark, L, Colaneri, L, Cole, PL, Contalbrigo, M, Crede, V, Dashyan, N, De Sanctis, E, De Vita, R, Djalali, C, Dupre, R, El Alaoui, A, El Fassi, L, Elouadrhiri, L, Eugenio, P, Fedotov, G, Fegan, S, Fersch, R, Filippi, A, Fradi, A, Ghandilyan, Y, Gilfoyle, GP, Girod, FX, Glazier, DI, Gleason, C, Gohn, W, Golovatch, E, Gothe, RW, Griffioen, KA, Guidal, M, Guo, L, Hakobyan, H, Harrison, N, Hattawy, M, Hicks, K, Holtrop, M, Hughes, SM, Ilieva, Y, Ireland, DG, Ishkhanov, BS, Isupov, EL, Jenkins, D, Jiang, H, Jo, HS, Joo, K, Joosten, S, Keller, D, Khachatryan, G, Kim, A, Kim, W, Klein, A, Kubarovsky, V, Kuleshov, SV, Lanza, L, Lenisa, P, Livingston, K, MacGregor, IJD, Markov, N, McKinnon, B, Mineeva, T, Mokeev, V, Montgomery, RA, Movsisyan, A, Camacho, CM, Murdoch, G, Niccolai, S, Niculescu, G, Osipenko, M, Paolone, M, Paremuzyan, R, Park, K, Pasyuk, E, Phelps, W, Pogorelko, O, Price, JW, Procureur, S, Protopopescu, D, Ripani, M, Riser, D, Ritchie, BG, Rizzo, A, Rosner, G, Sabatie, F, Salgado, C, Sharabian, YG, Skorodumina, I, Smith, GD, Sober, DI, Sokhan, D, Sparveris, N, Strauch, S, Tian, Y, Torayev, B, Ungaro, M, Voskanyan, H, Voutier, E, Watts, DP, Wood, MH, Zachariou, N, Zhang, J, Zhao, ZW & Collaboration, CLAS 2017, 'Beam-Target Helicity Asymmetry for →γ→n→π−p in the N∗Resonance Region', Physical Review Letters, vol. 118, no. 24, 242002. https://doi.org/10.1103/PhysRevLett.118.242002

TY - JOUR

T1 - Beam-Target Helicity Asymmetry for →γ→n→π−p in the N∗Resonance Region

AU - Ho, D.

AU - Peng, P.

AU - Bass, C.

AU - Collins, P.

AU - D'Angelo, A.

AU - Deur, A.

AU - Fleming, J.

AU - Hanretty, C.

AU - Kageya, T.

AU - Khandaker, M.

AU - Klein, F. J.

AU - Klempt, E.

AU - Laine, V.

AU - Lowry, M. M.

AU - Lu, H.

AU - Nepali, C.

AU - Nikonov, V. A.

AU - O'Connell, T.

AU - Sandorfi, A. M.

AU - Sarantsev, A. V.

AU - Schumacher, R. A.

AU - Strakovsky, I. I.

AU - Svarc, A.

AU - Walford, N. K.

AU - Wei, X.

AU - Whisnant, C. S.

AU - Workman, R. L.

AU - Zonta, I.

AU - Adhikari, K. P.

AU - Adikaram, D.

AU - Akbar, Z.

AU - Amaryan, M. J.

AU - Pereira, S. Anefalos

AU - Avakian, H.

AU - Ball, J.

AU - Bashkanov, M.

AU - Battaglieri, M.

AU - Batourine, V.

AU - Bedlinskiy, I.

AU - Biselli, A.

AU - Briscoe, W. J.

AU - Burkert, V. D.

AU - Carman, D. S.

AU - Celentano, A.

AU - Charles, G.

AU - Chetry, T.

AU - Ciullo, G.

AU - Clark, L.

AU - Colaneri, L.

AU - Cole, P. L.

AU - Contalbrigo, M.

AU - Crede, V.

AU - Dashyan, N.

AU - De Sanctis, E.

AU - De Vita, R.

AU - Djalali, C.

AU - Dupre, R.

AU - El Alaoui, A.

AU - El Fassi, L.

AU - Elouadrhiri, L.

AU - Eugenio, P.

AU - Fedotov, G.

AU - Fegan, S.

AU - Fersch, R.

AU - Filippi, A.

AU - Fradi, A.

AU - Ghandilyan, Y.

AU - Gilfoyle, G. P.

AU - Girod, F. X.

AU - Glazier, D. I.

AU - Gleason, C.

AU - Gohn, W.

AU - Golovatch, E.

AU - Gothe, R. W.

AU - Griffioen, K. A.

AU - Guidal, M.

AU - Guo, L.

AU - Hakobyan, H.

AU - Harrison, N.

AU - Hattawy, M.

AU - Hicks, K.

AU - Holtrop, M.

AU - Hughes, S. M.

AU - Ilieva, Y.

AU - Ireland, D. G.

AU - Ishkhanov, B. S.

AU - Isupov, E. L.

AU - Jenkins, D.

AU - Jiang, H.

AU - Jo, H. S.

AU - Joo, K.

AU - Joosten, S.

AU - Keller, D.

AU - Khachatryan, G.

AU - Kim, A.

AU - Kim, W.

AU - Klein, A.

AU - Kubarovsky, V.

AU - Kuleshov, S. V.

AU - Lanza, L.

AU - Lenisa, P.

AU - Livingston, K.

AU - MacGregor, I. J. D.

AU - Markov, N.

AU - McKinnon, B.

AU - Mineeva, T.

AU - Mokeev, V.

AU - Montgomery, R. A.

AU - Movsisyan, A.

AU - Camacho, C. Munoz

AU - Murdoch, G.

AU - Niccolai, S.

AU - Niculescu, G.

AU - Osipenko, M.

AU - Paolone, M.

AU - Paremuzyan, R.

AU - Park, K.

AU - Pasyuk, E.

AU - Phelps, W.

AU - Pogorelko, O.

AU - Price, J. W.

AU - Procureur, S.

AU - Protopopescu, D.

AU - Ripani, M.

AU - Riser, D.

AU - Ritchie, B. G.

AU - Rizzo, A.

AU - Rosner, G.

AU - Sabatie, F.

AU - Salgado, C.

AU - Sharabian, Y. G.

AU - Skorodumina, Iu.

AU - Smith, G. D.

AU - Sober, D. I.

AU - Sokhan, D.

AU - Sparveris, N.

AU - Strauch, S.

AU - Tian, Ye

AU - Torayev, B.

AU - Ungaro, M.

AU - Voskanyan, H.

AU - Voutier, E.

AU - Watts, D. P.

AU - Wood, M. H.

AU - Zachariou, N.

AU - Zhang, J.

AU - Zhao, Z. W.

AU - Collaboration, C. L. A. S.

PY - 2017/6/16

Y1 - 2017/6/16

N2 - We report the first beam-target double-polarization asymmetries in the gamma+n(p)->pi(-)+p(p) reaction spanning the nucleon resonance region from invariant mass W=1500 to 2300 MeV. Circularly polarized photons and longitudinally polarized deuterons in solid hydrogen deuteride (HD) have been used with the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. The exclusive final state has been extracted using three very different analyses that show excellent agreement, and these have been used to deduce the E polarization observable for an effective neutron target. These results have been incorporated into new partial wave analyses and have led to significant revisions for several gamma nN* resonance photocouplings.

AB - We report the first beam-target double-polarization asymmetries in the gamma+n(p)->pi(-)+p(p) reaction spanning the nucleon resonance region from invariant mass W=1500 to 2300 MeV. Circularly polarized photons and longitudinally polarized deuterons in solid hydrogen deuteride (HD) have been used with the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. The exclusive final state has been extracted using three very different analyses that show excellent agreement, and these have been used to deduce the E polarization observable for an effective neutron target. These results have been incorporated into new partial wave analyses and have led to significant revisions for several gamma nN* resonance photocouplings.

KW - HD TARGETS

KW - BREMSSTRAHLUNG

KW - AMPLITUDES

KW - CRYOSTAT

KW - PHOTON

KW - SPIN

KW - CLAS

U2 - 10.1103/PhysRevLett.118.242002

DO - 10.1103/PhysRevLett.118.242002

M3 - Article

SN - 0031-9007

VL - 118

JO - Physical Review Letters

JF - Physical Review Letters

IS - 24

M1 - 242002

ER -

Beam-Target Helicity Asymmetry for →γ→n→π−p in the N∗Resonance Region

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Keywords / Materials (for Non-textual outputs)

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