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. 2008 Feb 8;100(5):052001.
doi: 10.1103/PhysRevLett.100.052001. Epub 2008 Feb 6.

Bayesian analysis of pentaquark signals from CLAS data

D G Ireland  1 , B McKinnon, D Protopopescu, P Ambrozewicz, M Anghinolfi, G Asryan, H Avakian, H Bagdasaryan, N Baillie, J P Ball, N A Baltzell, V Batourine, M Battaglieri, I Bedlinskiy, M Bellis, N Benmouna, B L Berman, A S Biselli, L Blaszczyk, S Bouchigny, S Boiarinov, R Bradford, D Branford, W J Briscoe, W K Brooks, V D Burkert, C Butuceanu, J R Calarco, S L Careccia, D S Carman, L Casey, S Chen, L Cheng, P L Cole, P Collins, P Coltharp, D Crabb, V Crede, N Dashyan, R De Masi, R De Vita, E De Sanctis, P V Degtyarenko, A Deur, R Dickson, C Djalali, G E Dodge, J Donnelly, D Doughty, M Dugger, O P Dzyubak, K S Egiyan, L El Fassi, L Elouadrhiri, P Eugenio, G Fedotov, G Feldman, A Fradi, H Funsten, M Garçon, G Gavalian, N Gevorgyan, G P Gilfoyle, K L Giovanetti, F X Girod, J T Goetz, W Gohn, A Gonenc, R W Gothe, K A Griffioen, M Guidal, N Guler, L Guo, V Gyurjyan, K Hafidi, H Hakobyan, C Hanretty, N Hassall, F W Hersman, I Hleiqawi, M Holtrop, C E Hyde-Wright, Y Ilieva, B S Ishkhanov, E L Isupov, D Jenkins, H S Jo, J R Johnstone, K Joo, H G Juengst, N Kalantarians, J D Kellie, M Khandaker, W Kim, A Klein, F J Klein, M Kossov, Z Krahn, L H Kramer, V Kubarovsky, J Kuhn, S V Kuleshov, V Kuznetsov, J Lachniet, J M Laget, J Langheinrich, D Lawrence, K Livingston, H Y Lu, M Maccormick, N Markov, P Mattione, B A Mecking, M D Mestayer, C A Meyer, T Mibe, K Mikhailov, M Mirazita, R Miskimen, V Mokeev, B Moreno, K Moriya, S A Morrow, M Moteabbed, E Munevar, G S Mutchler, P Nadel-Turonski, R Nasseripour, S Niccolai, G Niculescu, I Niculescu, B B Niczyporuk, M R Niroula, R A Niyazov, M Nozar, M Osipenko, A I Ostrovidov, K Park, E Pasyuk, C Paterson, S Anefalos Pereira, J Pierce, N Pivnyuk, O Pogorelko, S Pozdniakov, J W Price, S Procureur, Y Prok, B A Raue, G Ricco, M Ripani, B G Ritchie, F Ronchetti, G Rosner, P Rossi, F Sabatié, J Salamanca, C Salgado, J P Santoro, V Sapunenko, R A Schumacher, V S Serov, Y G Sharabian, D Sharov, N V Shvedunov, L C Smith, D I Sober, D Sokhan, A Stavinsky, S S Stepanyan, S Stepanyan, B E Stokes, P Stoler, S Strauch, M Taiuti, D J Tedeschi, A Tkabladze, S Tkachenko, 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 W Zhao; CLAS Collaboration
Affiliations
Free article

Bayesian analysis of pentaquark signals from CLAS data

D G Ireland et al. Phys Rev Lett. .
Free article

Abstract

We examine the results of two measurements by the CLAS collaboration, one of which claimed evidence for a Theta(+) pentaquark, while the other found no such evidence. The unique feature of these two experiments was that they were performed with the same experimental setup. Using a Bayesian analysis, we find that the results of the two experiments are in fact compatible with each other, but that the first measurement did not contain sufficient information to determine unambiguously the existence of a Theta(+). Further, we suggest a means by which the existence of a new candidate particle can be tested in a rigorous manner.

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