Differential cross section and recoil polarization measurements for the γp → K+ Λ reaction using CLAS at Jefferson Lab

被引：181

作者：

McCracken, M. E. ^{[1
,2
]}

Bellis, M. ^{[1
]}

Meyer, C. A. ^{[1
]}

Williams, M. ^{[1
]}

Adhikari, K. P. ^{[28
]}

Anghinolfi, M.

Ball, J. ^{[9
]}

Battaglieri, M.

Berman, B. L. ^{[40
]}

Biselli, A. S. ^{[13
]}

Branford, D. ^{[12
]}

Briscoe, W. J. ^{[40
]}

Brooks, W. K. ^{[33
,35
]}

Burkert, V. D. ^{[33
]}

Careccia, S. L. ^{[28
]}

Carman, D. S.

Cole, P. L. ^{[16
]}

Collins, P. ^{[4
]}

Crede, V. ^{[15
]}

D'Angelo, A. ^{[19
,30
]}

Daniel, A. ^{[27
]}

Dashyan, N. ^{[39
]}

De Vita, R. ^{[18
]}

De Sanctis, E. ^{[17
]}

Deur, A. ^{[33
]}

Dey, B. ^{[1
]}

Dhamija, S. ^{[14
]}

Dickson, R. ^{[1
]}

Djalali, C. ^{[32
]}

Doughty, D. ^{[10
,33
]}

Dugger, M. ^{[4
]}

Dupre, R. ^{[3
]}

El Alaoui, A. ^{[3
]}

Eugenio, P. ^{[15
]}

Fegan, S. ^{[36
]}

Fradi, A.

Gabrielyan, M. Y. ^{[14
]}

Giovanetti, K. L. ^{[22
]}

Girod, F. X. ^{[9
]}

Goetz, J. T. ^{[5
]}

Gohn, W. ^{[11
]}

Gothe, R. W. ^{[32
]}

Griffioen, K. A. ^{[38
]}

Guidal, M. ^{[20
]}

Hafidi, K. ^{[3
]}

Hakobyanm, H. ^{[35
]}

Hanretty, C. ^{[15
]}

Hassall, N. ^{[36
]}

Hicks, K. ^{[27
]}

Holtrop, M. ^{[25
]}

机构：

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

[2] Washington & Jefferson Coll, Washington, PA 15301 USA

[3] Argonne Natl Lab, Argonne, IL 60441 USA

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

[5] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

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

[7] Canisius Coll, Buffalo, NY 14208 USA

[8] Catholic Univ Amer, Washington, DC 20064 USA

[9] Ctr Etud Saclay, CEA, Irfu Serv Phys Nucl, F-91191 Gif Sur Yvette, France

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

[11] Univ Connecticut, Storrs, CT 06269 USA

[12] Univ Edinburgh, Edinburgh EH9 3JZ, Midlothian, Scotland

[13] Fairfield Univ, Fairfield, CT 06824 USA

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

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

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

[17] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[18] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy

[19] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy

[20] Inst Phys Nucl ORSAY, Orsay, France

[21] Inst Theoret & Expt Phys, RU-117259 Moscow, Russia

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

[23] Kyungpook Natl Univ, Taegu 702701, South Korea

[24] Univ Grenoble 1, CNRS, IN2P3, INPG,LPSC, Grenoble, France

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

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

[27] Ohio Univ, Athens, OH 45701 USA

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

[29] Rensselaer Polytech Inst, Troy, NY 12180 USA

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

[31] Skobeltsyn Nucl Phys Inst, RU-119899 Moscow, Russia

[32] Univ S Carolina, Columbia, SC 29208 USA

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

[34] Union Coll, Schenectady, NY 12308 USA

[35] Univ Tecn Federico Santa Maria, Valparaiso, Chile

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

[37] Univ Virginia, Charlottesville, VA 22901 USA

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

[39] Yerevan Phys Inst, Yerevan 375036, Armenia

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

来源：

PHYSICAL REVIEW C | 2010年 / 81卷 / 02期

基金：

美国国家科学基金会; 新加坡国家研究基金会;

关键词：

PHOTON ENERGIES; SIGMA(0); PHOTOPRODUCTION;

D O I：

10.1103/PhysRevC.81.025201

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We present measurements of the differential cross section and Lambda recoil polarization for the gamma p -> K+ Lambda reaction made using the CLAS detector at Jefferson Lab. These measurements cover the center-of-mass energy range from 1.62 to 2.84 GeV and a wide range of center-of-mass K+ production angles. Independent analyses were performed using the K+ p pi(-) and K+ p (missing pi(-)) final-state topologies; results from these analyses were found to exhibit good agreement. These differential-cross-section measurements show excellent agreement with previous CLAS and LEPS results and offer increased precision and a 300-MeV increase in energy coverage. The recoil polarization data agree well with previous results and offer a large increase in precision and a 500-MeV extension in energy range. The increased center-of-mass energy range that these data represent will allow for independent study of nonresonant K+ Lambda photoproduction mechanisms at all production angles.

引用

页数：20

共 11 条

[1] Differential cross section for γd → ωd using CLAS at Jefferson Lab
Chetry, T.
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Ciullo, G.
Clark, L.
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Contalbrigo, M.
Crede, V.
D'Angelo, A.
Dashyan, N.
De Vita, R.
De Sanctis, E.
Deur, A.
Djalali, C.
Dupre, R.
El Alaoui, A.
El Fassi, L.
Eugenio, P.
Fedotov, G.
Fersch, R.
Filippi, A.
Gavalian, G.
Ghandilyan, Y.
Giovanetti, K. L.
Girod, F. X.
Golovatch, E.
Gothe, R. W.
Griffioen, K. A.
Guo, L.
Hafidi, K.
Harrison, N.
Hattawy, M.
Holtrop, M.
PHYSICS LETTERS B, 2018, 782 : 646 - 651
[2] Differential cross sections and recoil polarizations for the reaction γ p → K+Σ0
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Meyer, C. A.
Bellis, M.
McCracken, M. E.
Williams, M.
Adhikari, K. P.
Aghasyan, M.
Anghinolfi, M.
Ball, J.
Battaglieri, M.
Batourine, V.
Bedlinskiy, I.
Berman, B. L.
Biselli, A. S.
Branford, D.
Briscoe, W. J.
Brooks, W. K.
Burkert, V. D.
Carman, D. S.
Crede, V.
D'Angelo, A.
De Vita, R.
De Sanctis, E.
Deur, A.
Dhamija, S.
Dickson, R.
Djalali, C.
Doughty, D.
Dugger, M.
Dupre, R.
El Alaoui, A.
El Fassi, L.
Eugenio, P.
Fegan, S.
Fradi, A.
Gabrielyan, M. Y.
Gilfoyle, G. P.
Giovanetti, K. L.
Girod, F. X.
Gohn, W.
Gothe, R. W.
Graham, L.
Griffioen, K. A.
Guler, N.
Guo, L.
Hafidi, K.
Hakobyan, H.
Hanretty, C.
Hassall, N.
Hicks, K.
PHYSICAL REVIEW C, 2010, 82 (02):
[3] Resonance interpretation of the bump structure in the γp → K+Λ(1520) differential cross section
Xie, Ju-Jun
Nieves, J.
8TH INTERNATIONAL WORKSHOP ON THE PHYSICS OF EXCITED NUCLEONS (NSTAR 2011), 2012, 1432 : 353 - 356
[4] Extraction of t slopes from experimental γp → K+Λ and γp → K+Σ0 cross section data
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Puentes, Daniel
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PHYSICAL REVIEW C, 2017, 96 (04)
[5] Measurements of the Polarization Observables Is and Ic for (γ)over-right-arrow p → p π+π- using the CLAS Spectrometer
Hanretty, Charles
HADRON 2009, 2010, 1257 : 586 - 590
[6] Measurements of the Polarization Observables Is and Ic for (γ)over-right-arrowp → p π+π- using the CLAS Spectrometer
Hanretty, Charles
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[7] Measurement of beam-recoil observables Ox, Oz and target asymmetry T for the reaction γp → K+Λ
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EUROPEAN PHYSICAL JOURNAL A, 2009, 39 (02) : 149 - 161
[8] Differential cross section measurements for γn → π-p above the first nucleon resonance region
Mattione, P. T.
Carman, D. S.
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Kudryavtsev, A. E.
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Tarasov, V. E.
Adhikari, K. P.
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Batourine, V.
Bedlinskiy, I.
Biselli, A. S.
Boiarinov, S.
Briscoe, W. J.
Burkert, V. D.
Cao, T.
Celentano, A.
Charles, G.
Chetry, T.
Ciullo, G.
Clark, L.
Cole, P. L.
Contalbrigo, M.
Cortes, O.
Crede, V.
D'Angelo, A.
Dashyan, N.
De Vita, R.
De Sanctis, E.
Defurne, M.
Deur, A.
Djalali, C.
Dugger, M.
Dupre, R.
Egiyan, H.
El Alaoui, A.
El Fassi, L.
Eugenio, P.
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Fersch, R.
Filippi, A.
Fleming, J. A.
Fradi, A.
PHYSICAL REVIEW C, 2017, 96 (03)
[9] Beam-recoil polarization transfer in the nucleon resonance region in the exclusive (e)over-right-arrow p → e′ K+(Λ)over-right-arrow and (e)over-right-arrow p → e′ K+(Σ)over-right-arrow0 reactions at the CLAS spectrometer
Carman, D. S.
Raue, B. A.
Adhikari, K. P.
Amaryan, M. J.
Anghinolfi, M.
Baghdasaryan, H.
Battaglieri, M.
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Biselli, A. S.
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Giovanetti, K. L.
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PHYSICAL REVIEW C, 2009, 79 (06):
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El Alaoui, A.
Eugenio, P.
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