Bayesian analysis of pentaquark signals from CLAS data

CLAS Collaboration; D. G. Ireland; 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; D. P. Watts

doi:10.1103/PhysRevLett.100.052001

Bayesian analysis of pentaquark signals from CLAS data

CLAS Collaboration, D. G. Ireland, 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. BlaszczykS. 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, D. P. Watts

School of Physics and Astronomy

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Abstract / Description of output

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.

Original language	English
Article number	052001
Pages (from-to)	-
Number of pages	5
Journal	Physical Review Letters
Volume	100
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.100.052001
Publication status	Published - 8 Feb 2008

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CLAS Collaboration, Ireland, D. G., McKinnon, B., Protopopescu, D., Ambrozewicz, P., Anghinolfi, M., Asryan, G., Avakian, H., Bagdasaryan, H., Baillie, N., Ball, J. P., Baltzell, N. A., Batourine, V., Battaglieri, M., Bedlinskiy, I., Bellis, M., Benmouna, N., Berman, B. L., Biselli, A. S., ... Watts, D. P. (2008). Bayesian analysis of pentaquark signals from CLAS data. Physical Review Letters, 100(5), -. Article 052001. https://doi.org/10.1103/PhysRevLett.100.052001

@article{f67a3e4fbed947d2b4b0c6747ebb52d5,

title = "Bayesian analysis of pentaquark signals from CLAS data",

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.",

author = "{CLAS Collaboration} and Ireland, {D. G.} and B. McKinnon and D. Protopopescu 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 M. Battaglieri and I. Bedlinskiy and M. Bellis and N. Benmouna and Berman, {B. L.} and Biselli, {A. S.} and L. Blaszczyk and S. Bouchigny and S. Boiarinov and R. Bradford and D. Branford and Briscoe, {W. J.} and Brooks, {W. K.} and Burkert, {V. D.} and C. Butuceanu and Calarco, {J. R.} and Careccia, {S. L.} and Carman, {D. S.} and L. Casey and S. Chen and L. Cheng and Cole, {P. L.} and P. Collins and P. Coltharp and D. Crabb and V. Crede and N. Dashyan and {De Masi}, R. and {De Vita}, R. and {De Sanctis}, E. and Degtyarenko, {P. V.} and A. Deur and R. Dickson and C. Djalali and Dodge, {G. E.} and J. Donnelly and D. Doughty and Watts, {D. P.}",

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doi = "10.1103/PhysRevLett.100.052001",

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CLAS Collaboration, Ireland, DG, McKinnon, B, Protopopescu, D, Ambrozewicz, P, Anghinolfi, M, Asryan, G, Avakian, H, Bagdasaryan, H, Baillie, N, Ball, JP, Baltzell, NA, Batourine, V, Battaglieri, M, Bedlinskiy, I, Bellis, M, Benmouna, N, Berman, BL, Biselli, AS, Blaszczyk, L, Bouchigny, S, Boiarinov, S, Bradford, R, Branford, D, Briscoe, WJ, Brooks, WK, Burkert, VD, Butuceanu, C, Calarco, JR, Careccia, SL, Carman, DS, Casey, L, Chen, S, Cheng, L, Cole, PL, Collins, P, Coltharp, P, Crabb, D, Crede, V, Dashyan, N, De Masi, R, De Vita, R, De Sanctis, E, Degtyarenko, PV, Deur, A, Dickson, R, Djalali, C, Dodge, GE, Donnelly, J, Doughty, D & Watts, DP 2008, 'Bayesian analysis of pentaquark signals from CLAS data', Physical Review Letters, vol. 100, no. 5, 052001, pp. -. https://doi.org/10.1103/PhysRevLett.100.052001

TY - JOUR

T1 - Bayesian analysis of pentaquark signals from CLAS data

AU - CLAS Collaboration

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 - Watts, D. P.

PY - 2008/2/8

Y1 - 2008/2/8

N2 - 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.

AB - 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.

U2 - 10.1103/PhysRevLett.100.052001

DO - 10.1103/PhysRevLett.100.052001

M3 - Article

SN - 0031-9007

VL - 100

SP - -

JO - Physical Review Letters

JF - Physical Review Letters

IS - 5

M1 - 052001

ER -

Bayesian analysis of pentaquark signals from CLAS data

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