Search for Θ+(1540) pentaquark in high-statistics measurement of γp→(K)over-bar0K+n at CLAS -: art. no. 042001

被引：85

作者：

Battaglieri, M ^{[1
]}

de Vita, R

Kubarovsky, V

Guo, L

Mutchler, GS

Stoler, P

Weygand, DP

Ambrozewicz, P

Anghinolfi, M

Asryan, G

Avakian, H

Bagdasaryan, H

Baillie, N

Ball, JP

Baltzell, NA

Batourine, V

Bedlinskiy, I

Bellis, M

Benmouna, N

Berman, BL

Biselli, AS

Bouchigny, S

Boiarinov, S

Bradford, R

Branford, D

Briscoe, WJ

Brooks, WK

Bültmann, S

Burkert, VD

Butuceanu, C

Calarco, JR

Careccia, SL

Carman, DS

Chen, S

Clinton, E

Cole, PL

Coltharp, P

Crabb, D

Crannell, H

Cummings, JP

Dale, D

De Sanctis, E

Degtyarenko, PV

Deur, A

Dharmawardane, KV

Djalali, C

Dodge, GE

Donnelly, J

Doughty, D

Dugger, M

机构：

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

[2] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy

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

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

[5] Rice Univ, Houston, TX 77005 USA

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

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

[8] Calif State Univ, Carson, CA 90747 USA

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

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

[11] CEA Saclay, Serv Phys Nucl, F-91191 Gif Sur Yvette, France

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

[13] Univ Connecticut, Storrs, CT 06269 USA

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

[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, Nazl Frascati Lab, I-00044 Frascati, Italy

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

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

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

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

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

[26] Univ Massachusetts, Amherst, MA 01003 USA

[27] Moscow MV Lomonosov State Univ, Gen Nucl Phys Inst, Moscow 119899, Russia

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

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

[30] Ohio Univ, Athens, OH 45701 USA

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

[32] Univ Richmond, Richmond, VA 23173 USA

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

[34] Union Coll, Schenectady, NY 12308 USA

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

[36] Univ Virginia, Charlottesville, VA 22901 USA

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

[38] Yerevan Phys Inst, Yerevan 375036, Armenia

[39] Univ Kentucky, Lexington, KY 40506 USA

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

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

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

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.96.042001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The exclusive reaction gamma p ->(K) over bar (0)K(+)n was studied in the photon energy range between 1.6 and 3.8 GeV searching for evidence of the exotic baryon Theta(+)(1540)-> nK(+). The decay to nK(+) requires the assignment of strangeness S=+1 to any observed resonance. Data were collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility corresponding to an integrated luminosity of 70 pb(-1). No evidence for the Theta(+) pentaquark was found. Upper limits were set on the production cross section as function of center-of-mass angle and nK(+) mass. The 95% C.L. upper limit on the total cross section for a narrow resonance at 1540 MeV was found to be 0.8 nb.

引用

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