Beam-Target Helicity Asymmetry for (γ)over-right-arrow(n)over-right-arrow → π-p in the N* Resonance Region

被引：25

作者：

Ho, D. ^{[2
]}

Peng, P. ^{[17
]}

Bass, C. ^{[1
]}

Collins, P. ^{[3
]}

D'Angelo, A. ^{[1
,15
,16
]}

Deur, A. ^{[1
]}

Fleming, J. ^{[4
]}

Hanretty, C. ^{[1
,17
]}

Kageya, T. ^{[1
]}

Khandaker, M. ^{[8
]}

Klein, F. J.

Klempt, E. ^{[7
]}

Laine, V. ^{[12
]}

Lowry, M. M. ^{[1
]}

Lu, H. ^{[2
,14
]}

Nepali, C. ^{[9
]}

Nikonov, V. A. ^{[7
,10
]}

O'Connell, T. ^{[13
]}

Sandorfi, A. M. ^{[1
]}

Sarantsev, A. V. ^{[7
,10
]}

Schumacher, R. A. ^{[2
]}

Strakovsky, I. I. ^{[5
]}

Svarc, A. ^{[11
]}

Walford, N. K. ^{[3
]}

Wei, X. ^{[1
]}

Whisnant, C. S. ^{[6
]}

Workman, R. L. ^{[5
]}

Zonta, I. ^{[15
,16
]}

Adhikari, K. P. ^{[9
,38
]}

Adikaram, D. ^{[9
]}

Akbar, Z. ^{[26
]}

Amaryan, M. J. ^{[9
]}

Pereira, S. Anefalos ^{[29
]}

Avakian, H. ^{[1
]}

Ball, J. ^{[36
]}

Bashkanov, M. ^{[4
]}

Battaglieri, M. ^{[30
]}

Batourine, V. ^{[1
]}

Bedlinskiy, I. ^{[35
]}

Biselli, A. ^{[24
]}

Briscoe, W. J. ^{[5
]}

Burkert, V. D. ^{[1
]}

Carman, D. S. ^{[1
]}

Celentano, A. ^{[30
]}

Charles, G. ^{[9
,36
]}

Chetry, T. ^{[39
]}

Ciullo, G. ^{[27
,28
]}

Clark, L. ^{[42
]}

Colaneri, L. ^{[13
]}

Cole, P. L. ^{[32
]}

机构：

[1] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA

[2] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[3] Catholic Univ Amer, Washington, DC USA

[4] Univ Edinburgh, Edinburgh EH9 3FD, Midlothian, Scotland

[5] George Washington Univ, Washington, DC 20052 USA

[6] James Madison Univ, Harrisonburg, VA 22807 USA

[7] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53113 Bonn, Germany

[8] Norfolk State Univ, Norfolk, VA 23504 USA

[9] Old Dominion Univ, Norfolk, VA 23529 USA

[10] Petersburg Nucl Phys Inst, Gatchina 188300, Russia

[11] Rudjer Boskovic Inst, Zagreb 10002, Croatia

[12] Univ Blaise Pascal, F-63178 Aubiere, France

[13] Univ Connecticut, Storrs, CT 06269 USA

[14] Univ Iowa, Iowa City, IA 52242 USA

[15] Univ Roma Tor Vergata, I-00133 Rome, Italy

[16] INFN Sez Roma2, I-00133 Rome, Italy

[17] Univ Virginia, Charlottesville, VA 22903 USA

[18] Argonne Natl Lab, Argonne, IL 60439 USA

[19] Arizona State Univ, Tempe, AZ 85287 USA

[20] Calif State Univ, Dominguez Hills, Carson, CA 90747 USA

[21] Canisius Coll, Buffalo, NY 14208 USA

[22] Christopher Newport Univ, Newport News, VA 23606 USA

[23] Coll William & Mary, Williamsburg, VA 23187 USA

[24] Fairfield Univ, Fairfield, CT 06824 USA

[25] Florida Int Univ, Miami, FL 33199 USA

[26] Florida State Univ, Tallahassee, FL 32306 USA

[27] INFN Sezione Ferrara, I-44121 Ferrara, Italy

[28] Univ Ferrara, I-44121 Ferrara, Italy

[29] INFN, Lab Nazl Frascati, I-00044 Frascati, Italy

[30] INFN, Sez Genova, I-16146 Genoa, Italy

[31] INFN, Sez Torino, I-10125 Turin, Italy

[32] Idaho State Univ, Pocatello, ID 83209 USA

[33] CNRS, IN2P3, Inst Phys Nucl, F-91406 Orsay, France

[34] Univ Paris Sud, F-91406 Orsay, France

[35] Inst Theoret & Expt Phys, Moscow 117259, Russia

[36] Univ Paris Saclay, CEA, Irfu SPhN, F-91191 Gif Sur Yvette, France

[37] Kyungpook Natl Univ, Daegu 41566, South Korea

[38] Mississippi State Univ, Mississippi State, MS 39762 USA

[39] Ohio Univ, Athens, OH 45701 USA

[40] Temple Univ, Philadelphia, PA 19122 USA

[41] Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119234, Russia

[42] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland

[43] Univ New Hampshire, Durham, NH 03824 USA

[44] Univ Richmond, Richmond, VA 23173 USA

[45] Univ South Carolina, Columbia, SC 29208 USA

[46] Univ Tecn Federico Santa Maria, Casilla 110 5, Valparaiso, Chile

[47] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA

[48] Yerevan Phys Inst, Yerevan 375036, Armenia

来源：

PHYSICAL REVIEW LETTERS | 2017年 / 118卷 / 24期

基金：

新加坡国家研究基金会; 美国国家科学基金会; 英国科学技术设施理事会;

关键词：

HD TARGETS; BREMSSTRAHLUNG; AMPLITUDES; CRYOSTAT; PHOTON; SPIN;

D O I：

10.1103/PhysRevLett.118.242002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：6

共 50 条

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