Observation of an exotic S = +1 baryon in exclusive photoproduction from the deuteron.

Published

Journal Article

In an exclusive measurement of the reaction gammad-->K(+)K(-)pn, a narrow peak that can be attributed to an exotic baryon with strangeness S=+1 is seen in the K(+)n invariant mass spectrum. The peak is at 1.542+/-0.005 GeV/c(2) with a measured width of 0.021 GeV/c(2) FWHM, which is largely determined by experimental mass resolution. The statistical significance of the peak is (5.2+/-0.6)sigma. The mass and width of the observed peak are consistent with recent reports of a narrow S=+1 baryon by other experimental groups.

Full Text

Duke Authors

Cited Authors

  • Stepanyan, S; Hicks, K; Carman, DS; Pasyuk, E; Schumacher, RA; Smith, ES; Tedeschi, DJ; Todor, L; Adams, G; Ambrozewicz, P; Anciant, E; Anghinolfi, M; Asavapibhop, B; Audit, G; Avakian, H; Bagdasaryan, H; Ball, JP; Barrow, SP; Battaglieri, M; Beard, K; Bektasoglu, M; Bellis, M; Berman, BL; Bianchi, N; Biselli, AS; Boiarinov, S; Bouchigny, S; Bradford, R; Branford, D; Briscoe, WJ; Brooks, WK; Burkert, VD; Butuceanu, C; Calarco, JR; Carnahan, B; Chen, S; Ciciani, L; Cole, PL; Coleman, A; Cords, D; Corvisiero, P; Crabb, D; Crannell, H; Cummings, JP; De Sanctis, E; Degtyarenko, PV; Denizli, H; Dennis, L; De Vita, R; Dharmawardane, KV; Dhuga, KS; Djalali, C; Dodge, GE; Doughty, D; Dragovitsch, P; Dugger, M; Dytman, S; Dzyubak, OP; Egiyan, H; Egiyan, KS; Elouadrhiri, L; Empl, A; Eugenio, P; Fatemi, R; Feuerbach, RJ; Ficenec, J; Forest, TA; Funsten, H; Garçon, M; Gavalian, G; Gilfoyle, GP; Giovanetti, KL; Gordon, CIO; Gothe, R; Griffioen, K; Guidal, M; Guillo, M; Guo, L; Gyurjyan, V; Hadjidakis, C; Hakobyan, RS; Hardie, J; Heddle, D; Heimberg, P; Hersman, FW; Hicks, RS; Holtrop, M; Hu, J; Hyde-Wright, CE; Ito, MM; Jenkins, D; Joo, K; Juengst, HG; Kellie, JD; Khandaker, M; Kim, KY; Kim, K; Kim, W; Klein, A; Klein, FJ; Klimenko, AV; Klusman, M; Kossov, M; Kramer, LH; Kuang, Y; Kubarovsky, V; Kuhn, SE; Kuhn, J; Lachniet, J; Lawrence, D; Li, J; Lima, A; Livingston, K; Lukashin, K; Manak, JJ; McAleer, S; McNabb, JWC; Mecking, BA; Mehrabyan, S; Melone, JJ; Mestayer, MD; Meyer, CA; Mikhailov, K; Minehart, R; Mirazita, M; Miskimen, R; Mokeev, V; Morand, L; Morrow, S; Muccifora, V; Mueller, J; Murphy, LY; Mutchler, GS; Napolitano, J; Nasseripour, R; Niccolai, S; Niculescu, G; Niculescu, I; Niczyporuk, BB; Niyazov, RA; Nozar, M; O'Brien, J; O'Rielly, GV; Opper, AK; Osipenko, M; Park, K; Peterson, G; Philips, SA; Pivnyuk, N; Pocanic, D; Pogorelko, O; Polli, E; Pozdniakov, S; Preedom, BM; Price, JW; Prok, Y; Protopopescu, D; Qin, LM; Raue, BA; Riccardi, G; Ricco, G; Ripani, M; Ritchie, BG; Ronchetti, F; Rossi, P; Rowntree, D; Rubin, P; Sabatié, F; Salgado, C; Santoro, J; Sapunenko, V; Serov, VS; Sharabian, YG; Shaw, J; Simionatto, S; Skabelin, AV; Smith, LC; Sober, DI; Strakovsky, II; Stavinsky, A; Stoler, P; Suleiman, R; Taiuti, M; Taylor, S; Thoma, U; Thompson, R; Tur, C; Ungaro, M; Vineyard, MF; Vlassov, AV; Wang, K; Weinstein, LB; Weller, H; Weygand, DP; Whisnant, CS; Wolin, E; Wood, MH; Yegneswaran, A; Yun, J; CLAS Collaboration,

Published Date

  • December 19, 2003

Published In

Volume / Issue

  • 91 / 25

Start / End Page

  • 252001 -

PubMed ID

  • 14754107

Pubmed Central ID

  • 14754107

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.91.252001

Language

  • eng