Search for Theta++ pentaquarks in the exclusive reaction gammap-->K+K-p.

Academic Article

Abstract

  • The reaction gammap --> pK+K- was studied at Jefferson Lab with photon energies from 1.8 to 3.8 GeV using a tagged photon beam. The goal was to search for a Theta++ pentaquark, a narrow, doubly charged baryon state having strangeness S=+1 and isospin I=1, in the pK+ invariant mass spectrum. No statistically significant evidence of a Theta++ was found. Upper limits on the total and differential cross section for the reaction gammap --> K-Theta++ were obtained in the mass range from 1.5 to 2.0 GeV/c2, with an upper limit for a narrow resonance with a mass M(Theta++) = 1.54 GeV/c2 of about 0.15 nb, 95% C.L.. This result places a stringent upper limit on the Theta++ width Gamma(Theta++) <0.1 MeV/c2.
  • Authors

  • Kubarovsky, V
  • Battaglieri, M
  • De Vita, R
  • Goett, J
  • 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
  • Collins, P
  • Coltharp, P
  • Crabb, D
  • Crannell, H
  • Crede, V
  • Cummings, JP
  • De Masi, R
  • Dale, D
  • De Sanctis, E
  • Degtyarenko, PV
  • Deur, A
  • Dharmawardane, KV
  • Djalali, C
  • Dodge, GE
  • Donnelly, J
  • Doughty, D
  • Dugger, M
  • Dzyubak, OP
  • Egiyan, H
  • Egiyan, KS
  • Elouadrhiri, L
  • Eugenio, P
  • Fedotov, G
  • Funsten, H
  • Gabrielyan, MY
  • Gan, L
  • Garçon, M
  • Gasparian, A
  • Gavalian, G
  • Gilfoyle, GP
  • Giovanetti, KL
  • Girod, FX
  • Glamazdin, O
  • Goetz, JT
  • Golovach, E
  • Gonenc, A
  • Gordon, CIO
  • Gothe, RW
  • Griffioen, KA
  • Guidal, M
  • Guler, N
  • Gyurjyan, V
  • Hadjidakis, C
  • Hafidi, K
  • Hakobyan, RS
  • Hardie, J
  • Hersman, FW
  • Hicks, K
  • Hleiqawi, I
  • Holtrop, Maurik
  • Hyde-Wright, CE
  • Ilieva, Y
  • Ireland, DG
  • Ishkhanov, BS
  • Isupov, EL
  • Ito, MM
  • Jenkins, D
  • Jo, HS
  • Joo, K
  • Juengst, HG
  • Kellie, JD
  • Khandaker, M
  • Kim, W
  • Klein, A
  • Klein, FJ
  • Klimenko, AV
  • Kossov, M
  • Kramer, LH
  • Kuhn, J
  • Kuhn, SE
  • Kuleshov, SV
  • Lachniet, J
  • Laget, JM
  • Langheinrich, J
  • Lawrence, D
  • Lee, T
  • Li, Ji
  • Livingston, K
  • Lu, H
  • MacCormick, M
  • Markov, N
  • McKinnon, B
  • Mecking, BA
  • Melone, JJ
  • Mestayer, MD
  • Meyer, CA
  • Mibe, T
  • Mikhailov, K
  • Minehart, R
  • Mirazita, M
  • Miskimen, R
  • Mochalov, V
  • Mokeev, V
  • Morand, L
  • Morrow, SA
  • Moteabbed, M
  • Nadel-Turonski, P
  • Nakagawa, I
  • Nasseripour, R
  • Niccolai, S
  • Niculescu, G
  • Niculescu, I
  • Niczyporuk, BB
  • Niroula, MR
  • Niyazov, RA
  • Nozar, M
  • Osipenko, M
  • Ostrovidov, AI
  • Park, K
  • Pasyuk, E
  • Paterson, C
  • Pierce, J
  • Pivnyuk, N
  • Pocanic, D
  • Pogorelko, O
  • Pozdniakov, S
  • Price, JW
  • Prok, Y
  • Protopopescu, D
  • Raue, BA
  • Riccardi, G
  • Ricco, G
  • Ripani, M
  • Ritchie, BG
  • Ronchetti, F
  • Rosner, G
  • Rossi, P
  • Sabatié, F
  • Salgado, C
  • Santoro, JP
  • Sapunenko, V
  • Schumacher, RA
  • Serov, VS
  • Sharabian, YG
  • Shvedunov, NV
  • Smith, ES
  • Smith, LC
  • Sober, DI
  • Stavinsky, A
  • Stepanyan, SS
  • Stepanyan, S
  • Stokes, BE
  • Strakovsky, II
  • Strauch, S
  • Taiuti, M
  • Tedeschi, DJ
  • Teymurazyan, A
  • Thoma, U
  • Tkabladze, A
  • Tkachenko, S
  • Todor, L
  • Tur, C
  • Ungaro, M
  • Vineyard, MF
  • Vlassov, AV
  • Weinstein, LB
  • Williams, M
  • Wolin, E
  • Wood, MH
  • Yegneswaran, A
  • Zana, L
  • Zhang, J
  • Zhao, B
  • CLAS Collaboration
  • Status

    Publication Date

  • September 8, 2006
  • Has Subject Area

    Published In

    Keywords

  • CLAS Collaboration
  • Digital Object Identifier (doi)

    Pubmed Id

  • 17025804
  • Start Page

  • 102001
  • Volume

  • 97
  • Issue

  • 10