Photoproduction of π+π- meson pairs on the proton

被引：39

作者：

Battaglieri, M. ^{[1
]}

De Vita, R. ^{[1
]}

Szczepaniak, A. P. ^{[2
,3
]}

Adhikari, K. P. ^{[36
]}

Amaryan, M. J. ^{[36
]}

Anghinolfi, M. ^{[1
]}

Baghdasaryan, H. ^{[46
]}

Bedlinskiy, I. ^{[23
]}

Bellis, M. ^{[8
]}

Bibrzycki, L. ^{[30
]}

Biselli, A. S. ^{[14
,37
]}

Bookwalter, C. ^{[16
]}

Branford, D. ^{[13
]}

Briscoe, W. J. ^{[17
]}

Burkert, V. D. ^{[43
]}

Careccia, S. L. ^{[36
]}

Carman, D. S. ^{[43
]}

Clinton, E. ^{[29
]}

Cole, P. L. ^{[19
]}

Collins, P. ^{[5
]}

Crede, V. ^{[16
]}

Dale, D. ^{[19
]}

D'Angelo, A. ^{[21
,39
]}

Daniel, A. ^{[35
]}

Dashyan, N. ^{[48
]}

De Sanctis, E. ^{[20
]}

Deur, A. ^{[43
]}

Dhamija, S. ^{[15
]}

Djalali, C. ^{[42
]}

Dodge, G. E. ^{[36
]}

Doughty, D. ^{[11
,43
]}

Drozdov, V. ^{[1
]}

Egiyan, H. ^{[31
,43
]}

Eugenio, P. ^{[16
]}

Fedotov, G. ^{[41
]}

Fegan, S. ^{[18
]}

Fradi, A. ^{[22
]}

Gabrielyan, M. Y. ^{[15
]}

Gan, L. ^{[33
]}

Garcon, M. ^{[10
]}

Gasparian, A. ^{[34
]}

Gilfoyle, G. P. ^{[38
]}

Giovanetti, K. L. ^{[25
]}

Girod, F. X. ^{[10
]}

Glamazdin, O. ^{[27
]}

Goett, J. ^{[37
]}

Goetz, J. T. ^{[6
]}

Gohn, W. ^{[12
]}

Golovatch, E. ^{[1
,41
]}

Gothe, R. W. ^{[42
]}

机构：

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

[2] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

[3] Indiana Univ, Ctr Nucl Theory, Bloomington, IN 47405 USA

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

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

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

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

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

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

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

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

[12] Univ Connecticut, Storrs, CT 06269 USA

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

[14] Fairfield Univ, Fairfield, CT 06824 USA

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

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

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

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

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

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

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

[22] ORSAY, Inst Phys Nucl, Orsay, France

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

[24] Inst High Energy Phys, Protvino 142281, Russia

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

[26] Univ Kentucky, Lexington, KY 40506 USA

[27] Kharkov Phys & Technol Inst, UA-61108 Kharkov, Ukraine

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

[29] Univ Massachusetts, Amherst, MA 01003 USA

[30] PAN, Henryk Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

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

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

[33] Univ N Carolina, Wilmington, NC 28403 USA

[34] N Carolina Agr & Tech State Univ, Greensboro, NC 27455 USA

[35] Ohio Univ, Athens, OH 45701 USA

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

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

[38] Univ Richmond, Richmond, VA 23173 USA

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

[40] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

[41] Skobeltsyn Nucl Phys Inst, Moscow 119899, Russia

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

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

[44] Union Coll, Schenectady, NY 12308 USA

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

[46] Univ Virginia, Charlottesville, VA 22901 USA

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

[48] Yerevan Phys Inst, Yerevan 375036, Armenia

来源：

PHYSICAL REVIEW D | 2009年 / 80卷 / 07期

关键词：

PI-PI; COUPLED-CHANNEL; DIFFRACTION DISSOCIATION; POLARIZED PHOTONS; HIGH-STATISTICS; MODEL; CHAMBER; SYSTEM; K(K)OVER-BAR; UNITARITY;

D O I：

10.1103/PhysRevD.80.072005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The exclusive reaction gamma p -> pp(+)pi(-) was studied in the photon energy range 3.0-3.8 GeV and the momentum transfer range 0.4 < -t < 1.0 GeV2. Data were collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility. In this kinematic range, the integrated luminosity was about 20 pb(-1). The reaction was isolated by detecting the pi(+) and proton in CLAS, and reconstructing the pi(-) via the missing-mass technique. Moments of the di-pion decay angular distributions were derived from the experimental data. Differential cross sections for the S, P, and D-waves, in the M pi+pi- mass range 0.4-1.4 GeV, were derived performing a partial wave expansion of the extracted moments. Beside the dominant contribution of the rho(770) meson in the P-wave, evidence for the f(0)(980) and the f(2)(1270) mesons was found in the S and D-waves, respectively. The differential production cross sections d sigma/dt for individual waves in the mass range of the above-mentioned mesons were extracted. This is the first time the f(0)(980) has been measured in a photoproduction experiment.

引用

页数：19

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