Search for the Θ+ pentaquark in the γd→ΛnK+ reaction measured with the CLAS spectrometer

S. Niccolai; M. Mirazita; P. Rossi; N. A. Baltzell; D. S. Carman; K. Hicks; B. McKinnon; T. Mibe; S. Stepanyan; D. J. Tedeschi; G. Adams; P. Ambrozewicz; S. Anefalos Pereira; M. Anghinolfi; G. Asryan; H. Avakian; H. Bagdasaryan; N. Baillie; J. P. Ball; V. Batourine; M. Battaglieri; I. Bedlinskiy; M. Bektasoglu; M. Bellis; N. Benmouna; B. L. Berman; A. S. Biselli; S. Boiarinov; S. Bouchigny; R. Bradford; D. Branford; W. J. Briscoe; W. K. Brooks; S. Bültmann; V. D. Burkert; C. Butuceanu; J. R. Calarco; S. L. Careccia; B. Carnahan; S. Chen; P. L. Cole; P. Collins; P. Coltharp; D. Crabb; H. Crannell; V. Crede; J. P. Cummings; N. Dashyan; P. V. Degtyarenko; R. de Masi; A. Deppman; E. de Sanctis; A. Deur; R. DeVita; K. V. Dharmawardane; C. Djalali; G. E. Dodge; J. Donnelly; D. Doughty; Michael Dugger; O. P. Dzyubak; H. Egiyan; K. S. Egiyan; L. El Fassi; L. Elouadrhiri; P. Eugenio; G. Fedotov; G. Feldman; H. Funsten; M. Garçon; G. Gavalian; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; J. T. Goetz; A. Gonenc; C. I O Gordon; R. W. Gothe; K. A. Griffioen; M. Guidal; N. Guler; L. Guo; V. Gyurjyan; C. Hadjidakis; K. Hafidi; H. Hakobyan; R. S. Hakobyan; J. Hardie; F. W. Hersman; I. Hleiqawi; M. Holtrop; C. E. Hyde-Wright; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; E. L. Isupov; 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; V. Kubarovsky; J. Kuhn; S. E. Kuhn; S. V. Kuleshov; J. Lachniet; J. Langheinrich; D. Lawrence; T. Lee; J. Li; K. Livingston; H. Lu; M. MacCormick; N. Markov; B. A. Mecking; J. Mellor; J. J. Melone; M. D. Mestayer; C. A. Meyer; K. Mikhailov; R. Minehart; R. Miskimen; V. Mokeev; L. Morand; S. A. Morrow; M. Moteabbed; G. S. Mutchler; P. Nadel-Turonski; J. Napolitano; R. Nasseripour; G. Niculescu; I. Niculescu; B. B. Niczyporuk; M. R. Niroula; R. A. Niyazov; M. Nozar; J. de Oliveira Echeimberg; M. Osipenko; A. I. Ostrovidov; K. Park; E. Pasyuk; C. Paterson; J. Pierce; N. Pivnyuk; D. Pocanic; O. Pogorelko; S. Pozdniakov; B. M. Preedom; J. W. Price; Y. Prok; D. Protopopescu; B. A. Raue; G. Riccardi; G. Ricco; M. Ripani; Barry Ritchie; F. Ronchetti; G. Rosner; F. Sabatié; C. Salgado; J. P. Santoro; V. Sapunenko; R. A. Schumacher; V. S. Serov; Y. G. Sharabian; N. V. Shvedunov; E. S. Smith; L. C. Smith; D. I. Sober; A. Stavinsky; S. S. Stepanyan; B. E. Stokes; P. Stoler; I. I. Strakovsky; S. Strauch; M. Taiuti; U. Thoma; A. Tkabladze; S. Tkachenko; L. Todor; C. Tur; M. Ungaro; M. F. Vineyard; A. V. Vlassov; D. P. Watts; L. B. Weinstein; D. P. Weygand; M. Williams; E. Wolin; M. H. Wood; A. Yegneswaran; L. Zana; J. Zhang; B. Zhao; Z. Zhao

doi:10.1103/PhysRevLett.97.032001

Search for the Θ+ pentaquark in the γd→ΛnK+ reaction measured with the CLAS spectrometer

S. Niccolai, M. Mirazita, P. Rossi, N. A. Baltzell, D. S. Carman, K. Hicks, B. McKinnon, T. Mibe, S. Stepanyan, D. J. Tedeschi, G. Adams, P. Ambrozewicz, S. Anefalos Pereira, M. Anghinolfi, G. Asryan, H. Avakian, H. Bagdasaryan, N. Baillie, J. P. Ball, V. BatourineM. Battaglieri, I. Bedlinskiy, M. Bektasoglu, M. Bellis, N. Benmouna, B. L. Berman, A. S. Biselli, S. Boiarinov, S. Bouchigny, R. Bradford, D. Branford, W. J. Briscoe, W. K. Brooks, S. Bültmann, V. D. Burkert, C. Butuceanu, J. R. Calarco, S. L. Careccia, B. Carnahan, S. Chen, P. L. Cole, P. Collins, P. Coltharp, D. Crabb, H. Crannell, V. Crede, J. P. Cummings, N. Dashyan, P. V. Degtyarenko, R. de Masi, A. Deppman, E. de Sanctis, A. Deur, R. DeVita, K. V. Dharmawardane, C. Djalali, G. E. Dodge, J. Donnelly, D. Doughty, Michael Dugger, O. P. Dzyubak, H. Egiyan, K. S. Egiyan, L. El Fassi, L. Elouadrhiri, P. Eugenio, G. Fedotov, G. Feldman, H. Funsten, M. Garçon, G. Gavalian, G. P. Gilfoyle, K. L. Giovanetti, F. X. Girod, J. T. Goetz, A. Gonenc, C. I O Gordon, R. W. Gothe, K. A. Griffioen, M. Guidal, N. Guler, L. Guo, V. Gyurjyan, C. Hadjidakis, K. Hafidi, H. Hakobyan, R. S. Hakobyan, J. Hardie, F. W. Hersman, I. Hleiqawi, M. Holtrop, C. E. Hyde-Wright, Y. Ilieva, D. G. Ireland, B. S. Ishkhanov, E. L. Isupov, 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, V. Kubarovsky, J. Kuhn, S. E. Kuhn, S. V. Kuleshov, J. Lachniet, J. Langheinrich, D. Lawrence, T. Lee, J. Li, K. Livingston, H. Lu, M. MacCormick, N. Markov, B. A. Mecking, J. Mellor, J. J. Melone, M. D. Mestayer, C. A. Meyer, K. Mikhailov, R. Minehart, R. Miskimen, V. Mokeev, L. Morand, S. A. Morrow, M. Moteabbed, G. S. Mutchler, P. Nadel-Turonski, J. Napolitano, R. Nasseripour, G. Niculescu, I. Niculescu, B. B. Niczyporuk, M. R. Niroula, R. A. Niyazov, M. Nozar, J. de Oliveira Echeimberg, M. Osipenko, A. I. Ostrovidov, K. Park, E. Pasyuk, C. Paterson, J. Pierce, N. Pivnyuk, D. Pocanic, O. Pogorelko, S. Pozdniakov, B. M. Preedom, J. W. Price, Y. Prok, D. Protopopescu, B. A. Raue, G. Riccardi, G. Ricco, M. Ripani, Barry Ritchie, F. Ronchetti, G. Rosner, F. Sabatié, C. Salgado, J. P. Santoro, V. Sapunenko, R. A. Schumacher, V. S. Serov, Y. G. Sharabian, N. V. Shvedunov, E. S. Smith, L. C. Smith, D. I. Sober, A. Stavinsky, S. S. Stepanyan, B. E. Stokes, P. Stoler, I. I. Strakovsky, S. Strauch, M. Taiuti, U. Thoma, A. Tkabladze, S. Tkachenko, L. Todor, C. Tur, M. Ungaro, M. F. Vineyard, A. V. Vlassov, D. P. Watts, L. B. Weinstein, D. P. Weygand, M. Williams, E. Wolin, M. H. Wood, A. Yegneswaran, L. Zana, J. Zhang, B. Zhao, Z. Zhao

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

50 Scopus citations

Abstract

For the first time, the reaction γd→ΛnK+ has been analyzed in order to search for the exotic pentaquark baryon Θ+(1540). The data were taken at Jefferson Laboratory, using the Hall-B tagged-photon beam of energy between 0.8 and 3.6 GeV and the CEBAF Large Acceptance Spectrometer (CLAS). No statistically significant structures were observed in the nK+ invariant-mass distribution. The upper limit on the γd→ΛΘ+ integrated cross section has been calculated and found to be between 5 and 25 nb, depending on the production model assumed. The upper limit on the differential cross section is also reported.

Original language	English (US)
Article number	032001
Journal	Physical Review Letters
Volume	97
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.97.032001
State	Published - 2006

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1103/PhysRevLett.97.032001

Cite this

Niccolai, S., Mirazita, M., Rossi, P., Baltzell, N. A., Carman, D. S., Hicks, K., McKinnon, B., Mibe, T., Stepanyan, S., Tedeschi, D. J., Adams, G., Ambrozewicz, P., Anefalos Pereira, S., Anghinolfi, M., Asryan, G., Avakian, H., Bagdasaryan, H., Baillie, N., Ball, J. P., ... Zhao, Z. (2006). Search for the Θ+ pentaquark in the γd→ΛnK+ reaction measured with the CLAS spectrometer. Physical Review Letters, 97(3), [032001]. https://doi.org/10.1103/PhysRevLett.97.032001

Niccolai, S, Mirazita, M, Rossi, P, Baltzell, NA, Carman, DS, Hicks, K, McKinnon, B, Mibe, T, Stepanyan, S, Tedeschi, DJ, Adams, G, Ambrozewicz, P, Anefalos Pereira, S, Anghinolfi, M, Asryan, G, Avakian, H, Bagdasaryan, H, Baillie, N, Ball, JP, Batourine, V, Battaglieri, M, Bedlinskiy, I, Bektasoglu, M, Bellis, M, Benmouna, N, Berman, BL, Biselli, AS, Boiarinov, S, Bouchigny, S, Bradford, R, Branford, D, Briscoe, WJ, Brooks, WK, Bültmann, S, Burkert, VD, Butuceanu, C, Calarco, JR, Careccia, SL, Carnahan, B, Chen, S, Cole, PL, Collins, P, Coltharp, P, Crabb, D, Crannell, H, Crede, V, Cummings, JP, Dashyan, N, Degtyarenko, PV, de Masi, R, Deppman, A, de Sanctis, E, Deur, A, DeVita, R, Dharmawardane, KV, Djalali, C, Dodge, GE, Donnelly, J, Doughty, D, Dugger, M, Dzyubak, OP, Egiyan, H, Egiyan, KS, El Fassi, L, Elouadrhiri, L, Eugenio, P, Fedotov, G, Feldman, G, Funsten, H, Garçon, M, Gavalian, G, Gilfoyle, GP, Giovanetti, KL, Girod, FX, Goetz, JT, Gonenc, A, Gordon, CIO, Gothe, RW, Griffioen, KA, Guidal, M, Guler, N, Guo, L, Gyurjyan, V, Hadjidakis, C, Hafidi, K, Hakobyan, H, Hakobyan, RS, Hardie, J, Hersman, FW, Hleiqawi, I, Holtrop, M, 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, Kubarovsky, V, Kuhn, J, Kuhn, SE, Kuleshov, SV, Lachniet, J, Langheinrich, J, Lawrence, D, Lee, T, Li, J, Livingston, K, Lu, H, MacCormick, M, Markov, N, Mecking, BA, Mellor, J, Melone, JJ, Mestayer, MD, Meyer, CA, Mikhailov, K, Minehart, R, Miskimen, R, Mokeev, V, Morand, L, Morrow, SA, Moteabbed, M, Mutchler, GS, Nadel-Turonski, P, Napolitano, J, Nasseripour, R, Niculescu, G, Niculescu, I, Niczyporuk, BB, Niroula, MR, Niyazov, RA, Nozar, M, de Oliveira Echeimberg, J, Osipenko, M, Ostrovidov, AI, Park, K, Pasyuk, E, Paterson, C, Pierce, J, Pivnyuk, N, Pocanic, D, Pogorelko, O, Pozdniakov, S, Preedom, BM, Price, JW, Prok, Y, Protopopescu, D, Raue, BA, Riccardi, G, Ricco, G, Ripani, M, Ritchie, B, Ronchetti, F, Rosner, G, 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, Stokes, BE, Stoler, P, Strakovsky, II, Strauch, S, Taiuti, M, Thoma, U, Tkabladze, A, Tkachenko, S, Todor, L, Tur, C, Ungaro, M, Vineyard, MF, Vlassov, AV, Watts, DP, Weinstein, LB, Weygand, DP, Williams, M, Wolin, E, Wood, MH, Yegneswaran, A, Zana, L, Zhang, J, Zhao, B & Zhao, Z 2006, 'Search for the Θ+ pentaquark in the γd→ΛnK+ reaction measured with the CLAS spectrometer', Physical Review Letters, vol. 97, no. 3, 032001. https://doi.org/10.1103/PhysRevLett.97.032001

@article{e3e44240445641c5b1dd9841c428337e,

title = "Search for the Θ+ pentaquark in the γd→ΛnK+ reaction measured with the CLAS spectrometer",

abstract = "For the first time, the reaction γd→ΛnK+ has been analyzed in order to search for the exotic pentaquark baryon Θ+(1540). The data were taken at Jefferson Laboratory, using the Hall-B tagged-photon beam of energy between 0.8 and 3.6 GeV and the CEBAF Large Acceptance Spectrometer (CLAS). No statistically significant structures were observed in the nK+ invariant-mass distribution. The upper limit on the γd→ΛΘ+ integrated cross section has been calculated and found to be between 5 and 25 nb, depending on the production model assumed. The upper limit on the differential cross section is also reported.",

author = "S. Niccolai and M. Mirazita and P. Rossi and Baltzell, {N. A.} and Carman, {D. S.} and K. Hicks and B. McKinnon and T. Mibe and S. Stepanyan and Tedeschi, {D. J.} and G. Adams and P. Ambrozewicz and {Anefalos Pereira}, S. and M. Anghinolfi and G. Asryan and H. Avakian and H. Bagdasaryan and N. Baillie and Ball, {J. P.} and V. Batourine and M. Battaglieri and I. Bedlinskiy and M. Bektasoglu and M. Bellis and N. Benmouna and Berman, {B. L.} and Biselli, {A. S.} and S. Boiarinov and S. Bouchigny 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 B. Carnahan and S. Chen and Cole, {P. L.} and P. Collins and P. Coltharp and D. Crabb and H. Crannell and V. Crede and Cummings, {J. P.} and N. Dashyan and Degtyarenko, {P. V.} and {de Masi}, R. and A. Deppman and {de Sanctis}, E. and A. Deur and R. DeVita 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 {El Fassi}, L. and L. Elouadrhiri and P. Eugenio and G. Fedotov and G. Feldman and H. Funsten and M. Gar{\c c}on and G. Gavalian and Gilfoyle, {G. P.} and Giovanetti, {K. L.} and Girod, {F. X.} and Goetz, {J. T.} and A. Gonenc and Gordon, {C. I O} and Gothe, {R. W.} and Griffioen, {K. A.} and M. Guidal and N. Guler and L. Guo and V. Gyurjyan and C. Hadjidakis and K. Hafidi and H. Hakobyan and Hakobyan, {R. S.} and J. Hardie and Hersman, {F. W.} and I. Hleiqawi and M. Holtrop and Hyde-Wright, {C. E.} and Y. Ilieva and Ireland, {D. G.} and Ishkhanov, {B. S.} and Isupov, {E. L.} 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 V. Kubarovsky and J. Kuhn and Kuhn, {S. E.} and Kuleshov, {S. V.} and J. Lachniet and J. Langheinrich and D. Lawrence and T. Lee and J. Li and K. Livingston and H. Lu and M. MacCormick and N. Markov and Mecking, {B. A.} and J. Mellor and Melone, {J. J.} and Mestayer, {M. D.} and Meyer, {C. A.} and K. Mikhailov and R. Minehart and R. Miskimen and V. Mokeev and L. Morand and Morrow, {S. A.} and M. Moteabbed and Mutchler, {G. S.} and P. Nadel-Turonski and J. Napolitano and R. Nasseripour and G. Niculescu and I. Niculescu and Niczyporuk, {B. B.} and Niroula, {M. R.} and Niyazov, {R. A.} and M. Nozar and {de Oliveira Echeimberg}, J. 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 Preedom, {B. M.} 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 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 Shvedunov, {N. V.} and Smith, {E. S.} and Smith, {L. C.} and Sober, {D. I.} and A. Stavinsky and Stepanyan, {S. S.} and Stokes, {B. E.} and P. Stoler and Strakovsky, {I. I.} and S. Strauch and M. Taiuti 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 Watts, {D. P.} and Weinstein, {L. B.} and Weygand, {D. P.} and M. Williams and E. Wolin and Wood, {M. H.} and A. Yegneswaran and L. Zana and J. Zhang and B. Zhao and Z. Zhao",

year = "2006",

doi = "10.1103/PhysRevLett.97.032001",

language = "English (US)",

volume = "97",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "3",

}

TY - JOUR

T1 - Search for the Θ+ pentaquark in the γd→ΛnK+ reaction measured with the CLAS spectrometer

AU - Niccolai, S.

AU - Mirazita, M.

AU - Rossi, P.

AU - Baltzell, N. A.

AU - Carman, D. S.

AU - Hicks, K.

AU - McKinnon, B.

AU - Mibe, T.

AU - Stepanyan, S.

AU - Tedeschi, D. J.

AU - Adams, G.

AU - Ambrozewicz, P.

AU - Anefalos Pereira, S.

AU - Anghinolfi, M.

AU - Asryan, G.

AU - Avakian, H.

AU - Bagdasaryan, H.

AU - Baillie, N.

AU - Ball, J. P.

AU - Batourine, V.

AU - Battaglieri, M.

AU - Bedlinskiy, I.

AU - Bektasoglu, M.

AU - Bellis, M.

AU - Benmouna, N.

AU - Berman, B. L.

AU - Biselli, A. S.

AU - Boiarinov, S.

AU - Bouchigny, 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 - Carnahan, B.

AU - Chen, S.

AU - Cole, P. L.

AU - Collins, P.

AU - Coltharp, P.

AU - Crabb, D.

AU - Crannell, H.

AU - Crede, V.

AU - Cummings, J. P.

AU - Dashyan, N.

AU - Degtyarenko, P. V.

AU - de Masi, R.

AU - Deppman, A.

AU - de Sanctis, E.

AU - Deur, A.

AU - DeVita, R.

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 - El Fassi, L.

AU - Elouadrhiri, L.

AU - Eugenio, P.

AU - Fedotov, G.

AU - Feldman, G.

AU - Funsten, H.

AU - Garçon, M.

AU - Gavalian, G.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Girod, F. X.

AU - Goetz, J. T.

AU - Gonenc, A.

AU - Gordon, C. I O

AU - Gothe, R. W.

AU - Griffioen, K. A.

AU - Guidal, M.

AU - Guler, N.

AU - Guo, L.

AU - Gyurjyan, V.

AU - Hadjidakis, C.

AU - Hafidi, K.

AU - Hakobyan, H.

AU - Hakobyan, R. S.

AU - Hardie, J.

AU - Hersman, F. W.

AU - Hleiqawi, I.

AU - Holtrop, M.

AU - Hyde-Wright, C. E.

AU - Ilieva, Y.

AU - Ireland, D. G.

AU - Ishkhanov, B. S.

AU - Isupov, E. L.

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 - Kubarovsky, V.

AU - Kuhn, J.

AU - Kuhn, S. E.

AU - Kuleshov, S. V.

AU - Lachniet, J.

AU - Langheinrich, J.

AU - Lawrence, D.

AU - Lee, T.

AU - Li, J.

AU - Livingston, K.

AU - Lu, H.

AU - MacCormick, M.

AU - Markov, N.

AU - Mecking, B. A.

AU - Mellor, J.

AU - Melone, J. J.

AU - Mestayer, M. D.

AU - Meyer, C. A.

AU - Mikhailov, K.

AU - Minehart, R.

AU - Miskimen, R.

AU - Mokeev, V.

AU - Morand, L.

AU - Morrow, S. A.

AU - Moteabbed, M.

AU - Mutchler, G. S.

AU - Nadel-Turonski, P.

AU - Napolitano, J.

AU - Nasseripour, R.

AU - Niculescu, G.

AU - Niculescu, I.

AU - Niczyporuk, B. B.

AU - Niroula, M. R.

AU - Niyazov, R. A.

AU - Nozar, M.

AU - de Oliveira Echeimberg, J.

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 - Preedom, B. M.

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 - 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 - Shvedunov, N. V.

AU - Smith, E. S.

AU - Smith, L. C.

AU - Sober, D. I.

AU - Stavinsky, A.

AU - Stepanyan, S. S.

AU - Stokes, B. E.

AU - Stoler, P.

AU - Strakovsky, I. I.

AU - Strauch, S.

AU - Taiuti, M.

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 - Watts, D. P.

AU - Weinstein, L. B.

AU - Weygand, D. P.

AU - Williams, M.

AU - Wolin, E.

AU - Wood, M. H.

AU - Yegneswaran, A.

AU - Zana, L.

AU - Zhang, J.

AU - Zhao, B.

AU - Zhao, Z.

PY - 2006

Y1 - 2006

N2 - For the first time, the reaction γd→ΛnK+ has been analyzed in order to search for the exotic pentaquark baryon Θ+(1540). The data were taken at Jefferson Laboratory, using the Hall-B tagged-photon beam of energy between 0.8 and 3.6 GeV and the CEBAF Large Acceptance Spectrometer (CLAS). No statistically significant structures were observed in the nK+ invariant-mass distribution. The upper limit on the γd→ΛΘ+ integrated cross section has been calculated and found to be between 5 and 25 nb, depending on the production model assumed. The upper limit on the differential cross section is also reported.

AB - For the first time, the reaction γd→ΛnK+ has been analyzed in order to search for the exotic pentaquark baryon Θ+(1540). The data were taken at Jefferson Laboratory, using the Hall-B tagged-photon beam of energy between 0.8 and 3.6 GeV and the CEBAF Large Acceptance Spectrometer (CLAS). No statistically significant structures were observed in the nK+ invariant-mass distribution. The upper limit on the γd→ΛΘ+ integrated cross section has been calculated and found to be between 5 and 25 nb, depending on the production model assumed. The upper limit on the differential cross section is also reported.

UR - http://www.scopus.com/inward/record.url?scp=33746095408&partnerID=8YFLogxK

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U2 - 10.1103/PhysRevLett.97.032001

DO - 10.1103/PhysRevLett.97.032001

M3 - Article

AN - SCOPUS:33746095408

VL - 97

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 3

M1 - 032001

ER -

Search for the Θ+ pentaquark in the γd→ΛnK+ reaction measured with the CLAS spectrometer

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