Abstract
We examine the results of two measurements by the CLAS collaboration, one of which claimed evidence for a Θ+ 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 Θ+. Further, we suggest a means by which the existence of a new candidate particle can be tested in a rigorous manner.
Original language | English (US) |
---|---|
Article number | 052001 |
Journal | Physical Review Letters |
Volume | 100 |
Issue number | 5 |
DOIs | |
State | Published - Feb 6 2008 |
ASJC Scopus subject areas
- Physics and Astronomy(all)
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Bayesian analysis of pentaquark signals from CLAS data. / Ireland, D. G.; McKinnon, B.; Protopopescu, D. et al.
In: Physical Review Letters, Vol. 100, No. 5, 052001, 06.02.2008.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Bayesian analysis of pentaquark signals from CLAS data
AU - Ireland, D. G.
AU - McKinnon, B.
AU - Protopopescu, D.
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 - Battaglieri, M.
AU - Bedlinskiy, I.
AU - Bellis, M.
AU - Benmouna, N.
AU - Berman, B. L.
AU - Biselli, A. S.
AU - Blaszczyk, L.
AU - Bouchigny, S.
AU - Boiarinov, S.
AU - Bradford, R.
AU - Branford, D.
AU - Briscoe, W. J.
AU - Brooks, W. K.
AU - Burkert, V. D.
AU - Butuceanu, C.
AU - Calarco, J. R.
AU - Careccia, S. L.
AU - Carman, D. S.
AU - Casey, L.
AU - Chen, S.
AU - Cheng, L.
AU - Cole, P. L.
AU - Collins, P.
AU - Coltharp, P.
AU - Crabb, D.
AU - Crede, V.
AU - Dashyan, N.
AU - De Masi, R.
AU - De Vita, R.
AU - De Sanctis, E.
AU - Degtyarenko, P. V.
AU - Deur, A.
AU - Dickson, R.
AU - Djalali, C.
AU - Dodge, G. E.
AU - Donnelly, J.
AU - Doughty, D.
AU - Dugger, Michael
AU - Dzyubak, O. P.
AU - Egiyan, K. S.
AU - El Fassi, L.
AU - Elouadrhiri, L.
AU - Eugenio, P.
AU - Fedotov, G.
AU - Feldman, G.
AU - Fradi, A.
AU - Funsten, H.
AU - Garçon, M.
AU - Gavalian, G.
AU - Gevorgyan, N.
AU - Gilfoyle, G. P.
AU - Giovanetti, K. L.
AU - Girod, F. X.
AU - Goetz, J. T.
AU - Gohn, W.
AU - Gonenc, A.
AU - Gothe, R. W.
AU - Griffioen, K. A.
AU - Guidal, M.
AU - Guler, N.
AU - Guo, L.
AU - Gyurjyan, V.
AU - Hafidi, K.
AU - Hakobyan, H.
AU - Hanretty, C.
AU - Hassall, N.
AU - Hersman, F. W.
AU - Hleiqawi, I.
AU - Holtrop, M.
AU - Hyde-Wright, C. E.
AU - Ilieva, Y.
AU - Ishkhanov, B. S.
AU - Isupov, E. L.
AU - Jenkins, D.
AU - Jo, H. S.
AU - Johnstone, J. R.
AU - Joo, K.
AU - Juengst, H. G.
AU - Kalantarians, N.
AU - Kellie, J. D.
AU - Khandaker, M.
AU - Kim, W.
AU - Klein, A.
AU - Klein, F. J.
AU - Kossov, M.
AU - Krahn, Z.
AU - Kramer, L. H.
AU - Kubarovsky, V.
AU - Kuhn, J.
AU - Kuleshov, S. V.
AU - Kuznetsov, V.
AU - Lachniet, J.
AU - Laget, J. M.
AU - Langheinrich, J.
AU - Lawrence, D.
AU - Livingston, K.
AU - Lu, H. Y.
AU - MacCormick, M.
AU - Markov, N.
AU - Mattione, P.
AU - Mecking, B. A.
AU - Mestayer, M. D.
AU - Meyer, C. A.
AU - Mibe, T.
AU - Mikhailov, K.
AU - Mirazita, M.
AU - Miskimen, R.
AU - Mokeev, V.
AU - Moreno, B.
AU - Moriya, K.
AU - Morrow, S. A.
AU - Moteabbed, M.
AU - Munevar, E.
AU - Mutchler, G. S.
AU - Nadel-Turonski, P.
AU - Nasseripour, R.
AU - Niccolai, S.
AU - Niculescu, G.
AU - Niculescu, I.
AU - Niczyporuk, B. B.
AU - Niroula, M. R.
AU - Niyazov, R. A.
AU - Nozar, M.
AU - Osipenko, M.
AU - Ostrovidov, A. I.
AU - Park, K.
AU - Pasyuk, E.
AU - Paterson, C.
AU - Pereira, S. Anefalos
AU - Pierce, J.
AU - Pivnyuk, N.
AU - Pogorelko, O.
AU - Pozdniakov, S.
AU - Price, J. W.
AU - Procureur, S.
AU - Prok, Y.
AU - Raue, B. A.
AU - Ricco, G.
AU - Ripani, M.
AU - Ritchie, Barry
AU - Ronchetti, F.
AU - Rosner, G.
AU - Rossi, P.
AU - Sabatié, F.
AU - Salamanca, J.
AU - Salgado, C.
AU - Santoro, J. P.
AU - Sapunenko, V.
AU - Schumacher, R. A.
AU - Serov, V. S.
AU - Sharabian, Y. G.
AU - Sharov, D.
AU - Shvedunov, N. V.
AU - Smith, L. C.
AU - Sober, D. I.
AU - Sokhan, D.
AU - Stavinsky, A.
AU - Stepanyan, S. S.
AU - Stepanyan, S.
AU - Stokes, B. E.
AU - Stoler, P.
AU - Strauch, S.
AU - Taiuti, M.
AU - Tedeschi, D. J.
AU - Tkabladze, A.
AU - Tkachenko, S.
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. W.
PY - 2008/2/6
Y1 - 2008/2/6
N2 - We examine the results of two measurements by the CLAS collaboration, one of which claimed evidence for a Θ+ 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 Θ+. Further, we suggest a means by which the existence of a new candidate particle can be tested in a rigorous manner.
AB - We examine the results of two measurements by the CLAS collaboration, one of which claimed evidence for a Θ+ 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 Θ+. Further, we suggest a means by which the existence of a new candidate particle can be tested in a rigorous manner.
UR - http://www.scopus.com/inward/record.url?scp=38949217763&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=38949217763&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.100.052001
DO - 10.1103/PhysRevLett.100.052001
M3 - Article
AN - SCOPUS:38949217763
VL - 100
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 5
M1 - 052001
ER -