Search for Θ+(1540) pentaquark in high-statistics measurement of γp→K̄0K+n at CLAS

M. Battaglieri; R. de Vita; V. Kubarovsky; L. Guo; G. S. Mutchler; P. Stoler; D. P. Weygand; P. Ambrozewicz; M. Anghinolfi; G. Asryan; H. Avakian; H. Bagdasaryan; N. Baillie; J. P. Ball; N. A. Baltzell; V. Batourine; I. Bedlinskiy; M. Bellis; N. Benmouna; B. L. Berman; A. S. Biselli; S. Bouchigny; S. Boiarinov; R. Bradford; D. Branford; W. J. Briscoe; W. K. Brooks; S. Bültmann; V. D. Burkert; C. Butuceanu; J. R. Calarco; S. L. Careccia; D. S. Carman; S. Chen; E. Clinton; P. L. Cole; P. Coltharp; D. Crabb; H. Crannell; J. P. Cummings; D. Dale; E. de Sanctis; P. V. Degtyarenko; A. Deur; K. V. Dharmawardane; C. Djalali; G. E. Dodge; J. Donnelly; D. Doughty; Michael Dugger; O. P. Dzyubak; H. Egiyan; K. S. Egiyan; L. Elouadrhiri; P. Eugenio; G. Fedotov; H. Funsten; M. Y. Gabrielyan; L. Gan; M. Garçon; A. Gasparian; G. Gavalian; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; O. Glamazdin; J. Goett; J. T. Goetz; E. Golovach; A. Gonenc; C. I O Gordon; R. W. Gothe; K. A. Griffioen; M. Guidal; N. Guler; V. Gyurjyan; C. Hadjidakis; R. S. Hakobyan; J. Hardie; F. W. Hersman; K. Hicks; I. Hleiqawi; M. Holtrop; C. E. Hyde-Wright; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; M. M. Ito; D. Jenkins; H. S. Jo; K. Joo; H. G. Juengst; J. D. Kellie; M. Khandaker; W. Kim; A. Klein; F. J. Klein; A. V. Klimenko; M. Kossov; L. H. Kramer; J. Kuhn; S. E. Kuhn; S. V. Kuleshov; J. Lachniet; J. M. Laget; J. Langheinrich; D. Lawrence; T. Lee; J. Li; K. Livingston; B. McKinnon; B. A. Mecking; J. J. Melone; M. D. Mestayer; C. A. Meyer; T. Mibe; K. Mikhailov; R. Minehart; M. Mirazita; R. Miskimen; V. Mochalov; V. Mokeev; L. Morand; S. A. Morrow; P. Nadel-Turonski; I. Nakagawa; R. Nasseripour; S. Niccolai; G. Niculescu; I. Niculescu; B. B. Niczyporuk; R. A. Niyazov; M. Nozar; M. Osipenko; A. I. Ostrovidov; K. Park; E. Pasyuk; C. Paterson; J. Pierce; N. Pivnyuk; D. Pocanic; O. Pogorelko; S. Pozdniakov; J. W. Price; Y. Prok; D. Protopopescu; B. A. Raue; G. Riccardi; G. Ricco; M. Ripani; Barry Ritchie; F. Ronchetti; G. Rosner; P. Rossi; F. Sabatié; C. Salgado; J. P. Santoro; V. Sapunenko; R. A. Schumacher; V. S. Serov; Y. G. Sharabian; E. S. Smith; L. C. Smith; D. I. Sober; A. Stavinsky; S. S. Stepanyan; S. Stepanyan; B. E. Stokes; I. I. Strakovsky; S. Strauch; M. Taiuti; D. J. Tedeschi; A. Teymurazyan; U. Thoma; A. Tkabladze; S. Tkachenko; L. Todor; C. Tur; M. Ungaro; M. F. Vineyard; A. V. Vlassov; L. B. Weinstein; M. Williams; E. Wolin; M. H. Wood; A. Yegneswaran; L. Zana; J. Zhang; B. Zhao

doi:10.1103/PhysRevLett.96.042001

Search for Θ+(1540) pentaquark in high-statistics measurement of γp→K̄0K+n at CLAS

M. Battaglieri, R. de Vita, V. Kubarovsky, L. Guo, G. S. Mutchler, P. Stoler, D. P. Weygand, P. Ambrozewicz, M. Anghinolfi, G. Asryan, H. Avakian, H. Bagdasaryan, N. Baillie, J. P. Ball, N. A. Baltzell, V. Batourine, I. Bedlinskiy, M. Bellis, N. Benmouna, B. L. BermanA. S. Biselli, S. Bouchigny, S. Boiarinov, R. Bradford, D. Branford, W. J. Briscoe, W. K. Brooks, S. Bültmann, V. D. Burkert, C. Butuceanu, J. R. Calarco, S. L. Careccia, D. S. Carman, S. Chen, E. Clinton, P. L. Cole, P. Coltharp, D. Crabb, H. Crannell, J. P. Cummings, D. Dale, E. de Sanctis, P. V. Degtyarenko, A. Deur, K. V. Dharmawardane, C. Djalali, G. E. Dodge, J. Donnelly, D. Doughty, Michael Dugger, O. P. Dzyubak, H. Egiyan, K. S. Egiyan, L. Elouadrhiri, P. Eugenio, G. Fedotov, H. Funsten, M. Y. Gabrielyan, L. Gan, M. Garçon, A. Gasparian, G. Gavalian, G. P. Gilfoyle, K. L. Giovanetti, F. X. Girod, O. Glamazdin, J. Goett, J. T. Goetz, E. Golovach, A. Gonenc, C. I O Gordon, R. W. Gothe, K. A. Griffioen, M. Guidal, N. Guler, V. Gyurjyan, C. Hadjidakis, R. S. Hakobyan, J. Hardie, F. W. Hersman, K. Hicks, I. Hleiqawi, M. Holtrop, C. E. Hyde-Wright, Y. Ilieva, D. G. Ireland, B. S. Ishkhanov, M. M. Ito, D. Jenkins, H. S. Jo, K. Joo, H. G. Juengst, J. D. Kellie, M. Khandaker, W. Kim, A. Klein, F. J. Klein, A. V. Klimenko, M. Kossov, L. H. Kramer, J. Kuhn, S. E. Kuhn, S. V. Kuleshov, J. Lachniet, J. M. Laget, J. Langheinrich, D. Lawrence, T. Lee, J. Li, K. Livingston, B. McKinnon, B. A. Mecking, J. J. Melone, M. D. Mestayer, C. A. Meyer, T. Mibe, K. Mikhailov, R. Minehart, M. Mirazita, R. Miskimen, V. Mochalov, V. Mokeev, L. Morand, S. A. Morrow, P. Nadel-Turonski, I. Nakagawa, R. Nasseripour, S. Niccolai, G. Niculescu, I. Niculescu, B. B. Niczyporuk, R. A. Niyazov, M. Nozar, M. Osipenko, A. I. Ostrovidov, K. Park, E. Pasyuk, C. Paterson, J. Pierce, N. Pivnyuk, D. Pocanic, O. Pogorelko, S. Pozdniakov, J. W. Price, Y. Prok, D. Protopopescu, B. A. Raue, G. Riccardi, G. Ricco, M. Ripani, Barry Ritchie, F. Ronchetti, G. Rosner, P. Rossi, F. Sabatié, C. Salgado, J. P. Santoro, V. Sapunenko, R. A. Schumacher, V. S. Serov, Y. G. Sharabian, E. S. Smith, L. C. Smith, D. I. Sober, A. Stavinsky, S. S. Stepanyan, S. Stepanyan, B. E. Stokes, I. I. Strakovsky, S. Strauch, M. Taiuti, D. J. Tedeschi, A. Teymurazyan, U. Thoma, A. Tkabladze, S. Tkachenko, L. Todor, C. Tur, M. Ungaro, M. F. Vineyard, A. V. Vlassov, L. B. Weinstein, M. Williams, E. Wolin, M. H. Wood, A. Yegneswaran, L. Zana, J. Zhang, B. Zhao

Research output: Contribution to journal › Article › peer-review

88 Scopus citations

Abstract

The exclusive reaction γp→K̄0K+n was studied in the photon energy range between 1.6 and 3.8 GeV searching for evidence of the exotic baryon Θ+(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 70pb-1. No evidence for the Θ+ 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.

Original language	English (US)
Article number	042001
Journal	Physical Review Letters
Volume	96
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.96.042001
State	Published - 2006

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1103/PhysRevLett.96.042001

Cite this

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., ... Zhao, B. (2006). Search for Θ+(1540) pentaquark in high-statistics measurement of γp→K̄0K+n at CLAS. Physical Review Letters, 96(4), [042001]. https://doi.org/10.1103/PhysRevLett.96.042001

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, 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, Goett, J, Goetz, JT, Golovach, E, Gonenc, A, Gordon, CIO, Gothe, RW, Griffioen, KA, Guidal, M, Guler, N, Gyurjyan, V, Hadjidakis, C, Hakobyan, RS, Hardie, J, Hersman, FW, Hicks, K, Hleiqawi, I, Holtrop, M, Hyde-Wright, CE, Ilieva, Y, Ireland, DG, Ishkhanov, BS, 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, J, Livingston, K, 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, Nadel-Turonski, P, Nakagawa, I, Nasseripour, R, Niccolai, S, Niculescu, G, Niculescu, I, Niczyporuk, BB, 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, B, Ronchetti, F, Rosner, G, Rossi, P, Sabatié, F, Salgado, C, Santoro, JP, Sapunenko, V, Schumacher, RA, Serov, VS, Sharabian, YG, 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 2006, 'Search for Θ+(1540) pentaquark in high-statistics measurement of γp→K̄0K+n at CLAS', Physical Review Letters, vol. 96, no. 4, 042001. https://doi.org/10.1103/PhysRevLett.96.042001

@article{5abbf34a316d485f88bdb853c82b9624,

title = "Search for Θ+(1540) pentaquark in high-statistics measurement of γp→{\=K}0K+n at CLAS",

abstract = "The exclusive reaction γp→{\=K}0K+n was studied in the photon energy range between 1.6 and 3.8 GeV searching for evidence of the exotic baryon Θ+(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 70pb-1. No evidence for the Θ+ 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.",

author = "M. Battaglieri and {de Vita}, R. and V. Kubarovsky and L. Guo and Mutchler, {G. S.} and P. Stoler and Weygand, {D. P.} and P. Ambrozewicz and M. Anghinolfi and G. Asryan and H. Avakian and H. Bagdasaryan and N. Baillie and Ball, {J. P.} and Baltzell, {N. A.} and V. Batourine and I. Bedlinskiy and M. Bellis and N. Benmouna and Berman, {B. L.} and Biselli, {A. S.} and S. Bouchigny and S. Boiarinov and R. Bradford and D. Branford and Briscoe, {W. J.} and Brooks, {W. K.} and S. B{\"u}ltmann and Burkert, {V. D.} and C. Butuceanu and Calarco, {J. R.} and Careccia, {S. L.} and Carman, {D. S.} and S. Chen and E. Clinton and Cole, {P. L.} and P. Coltharp and D. Crabb and H. Crannell and Cummings, {J. P.} and D. Dale and {de Sanctis}, E. and Degtyarenko, {P. V.} and A. Deur and Dharmawardane, {K. V.} and C. Djalali and Dodge, {G. E.} and J. Donnelly and D. Doughty and Michael Dugger and Dzyubak, {O. P.} and H. Egiyan and Egiyan, {K. S.} and L. Elouadrhiri and P. Eugenio and G. Fedotov and H. Funsten and Gabrielyan, {M. Y.} and L. Gan and M. Gar{\c c}on and A. Gasparian and G. Gavalian and Gilfoyle, {G. P.} and Giovanetti, {K. L.} and Girod, {F. X.} and O. Glamazdin and J. Goett and Goetz, {J. T.} and E. Golovach and A. Gonenc and Gordon, {C. I O} and Gothe, {R. W.} and Griffioen, {K. A.} and M. Guidal and N. Guler and V. Gyurjyan and C. Hadjidakis and Hakobyan, {R. S.} and J. Hardie and Hersman, {F. W.} and K. Hicks and I. Hleiqawi and M. Holtrop and Hyde-Wright, {C. E.} and Y. Ilieva and Ireland, {D. G.} and Ishkhanov, {B. S.} and Ito, {M. M.} and D. Jenkins and Jo, {H. S.} and K. Joo and Juengst, {H. G.} and Kellie, {J. D.} and M. Khandaker and W. Kim and A. Klein and Klein, {F. J.} and Klimenko, {A. V.} and M. Kossov and Kramer, {L. H.} and J. Kuhn and Kuhn, {S. E.} and Kuleshov, {S. V.} and J. Lachniet and Laget, {J. M.} and J. Langheinrich and D. Lawrence and T. Lee and J. Li and K. Livingston and B. McKinnon and Mecking, {B. A.} and Melone, {J. J.} and Mestayer, {M. D.} and Meyer, {C. A.} and T. Mibe and K. Mikhailov and R. Minehart and M. Mirazita and R. Miskimen and V. Mochalov and V. Mokeev and L. Morand and Morrow, {S. A.} and P. Nadel-Turonski and I. Nakagawa and R. Nasseripour and S. Niccolai and G. Niculescu and I. Niculescu and Niczyporuk, {B. B.} and Niyazov, {R. A.} and M. Nozar and M. Osipenko and Ostrovidov, {A. I.} and K. Park and E. Pasyuk and C. Paterson and J. Pierce and N. Pivnyuk and D. Pocanic and O. Pogorelko and S. Pozdniakov and Price, {J. W.} and Y. Prok and D. Protopopescu and Raue, {B. A.} and G. Riccardi and G. Ricco and M. Ripani and Barry Ritchie and F. Ronchetti and G. Rosner and P. Rossi and F. Sabati{\'e} and C. Salgado and Santoro, {J. P.} and V. Sapunenko and Schumacher, {R. A.} and Serov, {V. S.} and Sharabian, {Y. G.} and Smith, {E. S.} and Smith, {L. C.} and Sober, {D. I.} and A. Stavinsky and Stepanyan, {S. S.} and S. Stepanyan and Stokes, {B. E.} and Strakovsky, {I. I.} and S. Strauch and M. Taiuti and Tedeschi, {D. J.} and A. Teymurazyan and U. Thoma and A. Tkabladze and S. Tkachenko and L. Todor and C. Tur and M. Ungaro and Vineyard, {M. F.} and Vlassov, {A. V.} and Weinstein, {L. B.} and M. Williams and E. Wolin and Wood, {M. H.} and A. Yegneswaran and L. Zana and J. Zhang and B. Zhao",

year = "2006",

doi = "10.1103/PhysRevLett.96.042001",

language = "English (US)",

volume = "96",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "4",

}

TY - JOUR

T1 - Search for Θ+(1540) pentaquark in high-statistics measurement of γp→K̄0K+n at CLAS

AU - Battaglieri, M.

AU - de Vita, R.

AU - Kubarovsky, V.

AU - Guo, L.

AU - Mutchler, G. S.

AU - Stoler, P.

AU - Weygand, D. P.

AU - Ambrozewicz, P.

AU - Anghinolfi, M.

AU - Asryan, G.

AU - Avakian, H.

AU - Bagdasaryan, H.

AU - Baillie, N.

AU - Ball, J. P.

AU - Baltzell, N. A.

AU - Batourine, V.

AU - Bedlinskiy, I.

AU - Bellis, M.

AU - Benmouna, N.

AU - Berman, B. L.

AU - Biselli, A. S.

AU - Bouchigny, S.

AU - Boiarinov, S.

AU - Bradford, R.

AU - Branford, D.

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Bültmann, S.

AU - Burkert, V. D.

AU - Butuceanu, C.

AU - Calarco, J. R.

AU - Careccia, S. L.

AU - Carman, D. S.

AU - Chen, S.

AU - Clinton, E.

AU - Cole, P. L.

AU - Coltharp, P.

AU - Crabb, D.

AU - Crannell, H.

AU - Cummings, J. P.

AU - Dale, D.

AU - de Sanctis, E.

AU - Degtyarenko, P. V.

AU - Deur, A.

AU - Dharmawardane, K. V.

AU - Djalali, C.

AU - Dodge, G. E.

AU - Donnelly, J.

AU - Doughty, D.

AU - Dugger, Michael

AU - Dzyubak, O. P.

AU - Egiyan, H.

AU - Egiyan, K. S.

AU - Elouadrhiri, L.

AU - Eugenio, P.

AU - Fedotov, G.

AU - Funsten, H.

AU - Gabrielyan, M. Y.

AU - Gan, L.

AU - Garçon, M.

AU - Gasparian, A.

AU - Gavalian, G.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Girod, F. X.

AU - Glamazdin, O.

AU - Goett, J.

AU - Goetz, J. T.

AU - Golovach, E.

AU - Gonenc, A.

AU - Gordon, C. I O

AU - Gothe, R. W.

AU - Griffioen, K. A.

AU - Guidal, M.

AU - Guler, N.

AU - Gyurjyan, V.

AU - Hadjidakis, C.

AU - Hakobyan, R. S.

AU - Hardie, J.

AU - Hersman, F. W.

AU - Hicks, K.

AU - Hleiqawi, I.

AU - Holtrop, M.

AU - Hyde-Wright, C. E.

AU - Ilieva, Y.

AU - Ireland, D. G.

AU - Ishkhanov, B. S.

AU - Ito, M. M.

AU - Jenkins, D.

AU - Jo, H. S.

AU - Joo, K.

AU - Juengst, H. G.

AU - Kellie, J. D.

AU - Khandaker, M.

AU - Kim, W.

AU - Klein, A.

AU - Klein, F. J.

AU - Klimenko, A. V.

AU - Kossov, M.

AU - Kramer, L. H.

AU - Kuhn, J.

AU - Kuhn, S. E.

AU - Kuleshov, S. V.

AU - Lachniet, J.

AU - Laget, J. M.

AU - Langheinrich, J.

AU - Lawrence, D.

AU - Lee, T.

AU - Li, J.

AU - Livingston, K.

AU - McKinnon, B.

AU - Mecking, B. A.

AU - Melone, J. J.

AU - Mestayer, M. D.

AU - Meyer, C. A.

AU - Mibe, T.

AU - Mikhailov, K.

AU - Minehart, R.

AU - Mirazita, M.

AU - Miskimen, R.

AU - Mochalov, V.

AU - Mokeev, V.

AU - Morand, L.

AU - Morrow, S. A.

AU - Nadel-Turonski, P.

AU - Nakagawa, I.

AU - Nasseripour, R.

AU - Niccolai, S.

AU - Niculescu, G.

AU - Niculescu, I.

AU - Niczyporuk, B. B.

AU - Niyazov, R. A.

AU - Nozar, M.

AU - Osipenko, M.

AU - Ostrovidov, A. I.

AU - Park, K.

AU - Pasyuk, E.

AU - Paterson, C.

AU - Pierce, J.

AU - Pivnyuk, N.

AU - Pocanic, D.

AU - Pogorelko, O.

AU - Pozdniakov, S.

AU - Price, J. W.

AU - Prok, Y.

AU - Protopopescu, D.

AU - Raue, B. A.

AU - Riccardi, G.

AU - Ricco, G.

AU - Ripani, M.

AU - Ritchie, Barry

AU - Ronchetti, F.

AU - Rosner, G.

AU - Rossi, P.

AU - Sabatié, F.

AU - Salgado, C.

AU - Santoro, J. P.

AU - Sapunenko, V.

AU - Schumacher, R. A.

AU - Serov, V. S.

AU - Sharabian, Y. G.

AU - Smith, E. S.

AU - Smith, L. C.

AU - Sober, D. I.

AU - Stavinsky, A.

AU - Stepanyan, S. S.

AU - Stepanyan, S.

AU - Stokes, B. E.

AU - Strakovsky, I. I.

AU - Strauch, S.

AU - Taiuti, M.

AU - Tedeschi, D. J.

AU - Teymurazyan, A.

AU - Thoma, U.

AU - Tkabladze, A.

AU - Tkachenko, S.

AU - Todor, L.

AU - Tur, C.

AU - Ungaro, M.

AU - Vineyard, M. F.

AU - Vlassov, A. V.

AU - Weinstein, L. B.

AU - Williams, M.

AU - Wolin, E.

AU - Wood, M. H.

AU - Yegneswaran, A.

AU - Zana, L.

AU - Zhang, J.

AU - Zhao, B.

PY - 2006

Y1 - 2006

N2 - The exclusive reaction γp→K̄0K+n was studied in the photon energy range between 1.6 and 3.8 GeV searching for evidence of the exotic baryon Θ+(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 70pb-1. No evidence for the Θ+ 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.

AB - The exclusive reaction γp→K̄0K+n was studied in the photon energy range between 1.6 and 3.8 GeV searching for evidence of the exotic baryon Θ+(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 70pb-1. No evidence for the Θ+ 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.

UR - http://www.scopus.com/inward/record.url?scp=33144469733&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33144469733&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.96.042001

DO - 10.1103/PhysRevLett.96.042001

M3 - Article

AN - SCOPUS:33144469733

SN - 0031-9007

VL - 96

JO - Physical Review Letters

JF - Physical Review Letters

IS - 4

M1 - 042001

ER -

Search for Θ+(1540) pentaquark in high-statistics measurement of γp→K̄0K+n at CLAS

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