Search for Theta+ (1540) Pentaquark in High-Statistics Measurement of gammap-->K0K+n at CLAS.

Battaglieri, M; De Vita, R; Kubarovsky, V; Guo, L; Mutchler, G S; Stoler, P; Weygand, D P; Ambrozewicz, P; Anghinolfi, M; Asryan, G; Avakian, H; Bagdasaryan, H; Baillie, N; Ball, J P; Baltzell, N A; Batourine, V; 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; Bültmann, S; Burkert, V D; Butuceanu, C; Calarco, J R; Careccia, S L; Carman, D S; Chen, S; Clinton, E; Cole, P L; Coltharp, P; Crabb, D; Crannell, H; Cummings, J P; Dale, D; De Sanctis, E; Degtyarenko, P V; Deur, A; Dharmawardane, K V; Djalali, C; Dodge, G E; Donnelly, J; Doughty, D; Dugger, M

Battaglieri, M; De Vita, R; Kubarovsky, V; Guo, L; Mutchler, G S; Stoler, P; Weygand, D P; Ambrozewicz, P; Anghinolfi, M; Asryan, G; Avakian, H; Bagdasaryan, H; Baillie, N; Ball, J P; Baltzell, N A; Batourine, V; 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; Bültmann, S; Burkert, V D; Butuceanu, C; Calarco, J R; Careccia, S L; Carman, D S; Chen, S; Clinton, E; Cole, P L; Coltharp, P; Crabb, D; Crannell, H; Cummings, J P; Dale, D; De Sanctis, E; Degtyarenko, P V; Deur, A; Dharmawardane, K V; Djalali, C; Dodge, G E; Donnelly, J; Doughty, D; Dugger, M.

Afiliación

Battaglieri M; Istituto Nazionale di Fisica Nucleare, Sezione di Genova, and Dipartimento di Fisica, Universitá di Genova, 16146 Genova, Italy.

Phys Rev Lett ; 96(4): 042001, 2006 Feb 03.

Article en En | MEDLINE | ID: mdl-16486808

ABSTRACT

ABSTRACT

The exclusive reaction gammap-->K0K+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.

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Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2006 Tipo del documento: Article País de afiliación: Italia

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PubMed Links

Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2006 Tipo del documento: Article País de afiliación: Italia