Search for the Θ+ Pentaquark in the reaction γd→pK-K+n

被引：101

作者：

McKinnon, B.

Hicks, K. ^{[1
]}

Baltzell, N. A.

Carman, D. S.

Mestayer, M. D.

Mibe, T.

Mirazita, M.

Niccolai, S.

Rossi, P.

Stepanyan, S.

Tedeschi, D. J.

Ambrozewicz, P.

Anghinolfi, M.

Asryan, G.

Avakian, H.

Bagdasaryan, H.

Baillie, N.

Ball, J. P.

Batourine, V.

Battaglieri, M.

Bedlinskiy, I.

Bellis, M.

Benmouna, N.

Berman, B. L.

Biselli, A. S.

Bouchigny, S.

Boiarinov, S.

Bradford, R.

Branford, D.

Briscoe, W. J.

Brooks, W. K.

Bultmann, S.

Burkert, V. D.

Butuceanu, C.

Calarco, J. R.

Careccia, S. L.

Chen, S.

Cole, P. L.

Collins, P.

Coltharp, P.

Crabb, D.

Crede, V.

Dale, D.

De Masi, R.

DeVita, R.

De Sanctis, E.

Degtyarenko, P. V.

Deur, A.

Djalali, C.

Dodge, G. E.

机构：

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

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

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

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

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

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

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

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

[9] Univ Connecticut, Storrs, CT 06269 USA

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

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

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

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

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

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

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

[17] Inst Phys Nucl Orsay, Orsay, France

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

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

[20] Univ Kentucky, Lexington, KY 40506 USA

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

[22] Univ Massachusetts, Amherst, MA 01003 USA

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

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

[25] Norfolk State Unit, Norfolk, VA 23504 USA

[26] N Carolina Agr & Tech State Univ, Greensboro, NC 27411 USA

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

[28] Ohio Univ, Athens, OH 45701 USA

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

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

[31] Rice Univ, Houston, TX 77005 USA

[32] Univ Richmond, Richmond, VA 23173 USA

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

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

[35] Union Coll, Schenectady, NY 12308 USA

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

[37] Univ Virginia, Charlottesville, VA 22901 USA

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

[39] Yerevan Phys Inst, Yerevan 375036, Armenia

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.96.212001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A search for the Theta(+) in the reaction gamma d -> pK(-)K(+)n was completed using the CLAS detector at Jefferson Lab. A study of the same reaction, published earlier, reported the observation of a narrow Theta(+) resonance. The present experiment, with more than 30 times the integrated luminosity of our earlier measurement, does not show any evidence for a narrow pentaquark resonance. The angle-integrated upper limit on Theta(+) production in the mass range of 1.52-1.56 GeV/c(2) for the gamma d -> pK(-)Theta(+) reaction is 0.3 nb (95% C.L.). This upper limit depends on assumptions made for the mass and angular distribution of Theta(+) production. Using Lambda(1520) production as an empirical measure of rescattering in the deuteron, the cross section upper limit for the elementary gamma n -> K-Theta(+) reaction is estimated to be a factor of 10 higher, i.e., similar to 3 nb (95% C.L.).

引用

页数：6

共 21 条

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

Battaglieri, M ;

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 .

PHYSICAL REVIEW LETTERS, 2006, 96 (04)

[2] Exotic anti-decuplet of baryons: prediction from chiral solitons [J].

Diakonov, D ;

Petrov, V ;

Polyakov, M .

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 1997, 359 (03) :305-314

[3] Reviewing the evidence for pentaquarks [J].

Dzierba, AR ;

Meyer, CA ;

Szczepaniak, AP .

FIRST MEETING OF THE APS TOPICAL GROUP ON HADRONIC PHYSICS, 2005, 9 :192-204

[4]

Ellis J, 2004, J HIGH ENERGY PHYS

[5] Unified approach to the classical statistical analysis of small signals [J].

Feldman, GJ ;

Cousins, RD .

PHYSICAL REVIEW D, 1998, 57 (07) :3873-3889

[6]

Frodesen A. G., 1979, Probability and Statistics in Particle Physics

[7]

Gell-Mann M., 1964, The Eightfold Way

[8]

HICKS K, IN PRESS PHYS REV D

[9] Experimental search for pentaquarks [J].

Hicks, KH .

PARTICLE AND NUCLEAR PHYSICS, VOL. 55, NO 2, 2005, 55 (02) :647-676

[10] Diquarks and exotic spectroscopy [J].

Jaffe, R ;

Wilczek, F .

PHYSICAL REVIEW LETTERS, 2003, 91 (23)

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