A Bayesian analysis of pentaquark signals from CLAS data - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review Letters Year : 2007

A Bayesian analysis of pentaquark signals from CLAS data

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 (1) , 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 (1, 2) , 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 , H. Egiyan , K.S. Egiyan , L. El Fassi , L. Elouadrhiri , P. Eugenio , G. Fedotov , G. Feldman , A. Fradi (1) , H. Funsten , M. Garçon (2) , G. Gavalian , N. Gevorgyan , G.P. Gilfoyle , K.L. Giovanetti , F.X. Girod (2) , J.T. Goetz , W. Gohn , A. Gonenc , R.W. Gothe , K.A. Griffioen , M. Guidal (1) , 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 (1) , 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 (1) , 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 (1) , K. Moriya , S.A. Morrow (1, 2) , M. Moteabbed , E. Munevar , G.S. Mutchler , P. Nadel-Turonski , R. Nasseripour , S. Niccolai (1) , 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 (2) , Y. Prok , B.A. Raue , G. Ricco , M. Ripani , B.G. Ritchie , F. Ronchetti , G. Rosner , P. Rossi , F. Sabatié (2) , J. Salamanca , C. Salgado , J.P. Santoro , V. Sapunenko , R.A. Schumacher , V.S. Serov , Y.G. Sharabian , D. Sharov , N.V. Shvedunov , E.S. Smith , 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 , U. Thoma , 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
D.G. Ireland
  • Function : Author
B. Mckinnon
  • Function : Author
D. Protopopescu
P. Ambrozewicz
  • Function : Author
M. Anghinolfi
  • Function : Author
G. Asryan
  • Function : Author
H. Avakian
  • Function : Author
H. Bagdasaryan
  • Function : Author
N. Baillie
  • Function : Author
J.P. Ball
  • Function : Author
N.A. Baltzell
  • Function : Author
V. Batourine
  • Function : Author
M. Battaglieri
  • Function : Author
I. Bedlinskiy
M. Bellis
  • Function : Author
N. Benmouna
  • Function : Author
B.L. Berman
  • Function : Author
A.S. Biselli
  • Function : Author
L. Blaszczyk
  • Function : Author
S. Boiarinov
  • Function : Author
R. Bradford
  • Function : Author
D. Branford
  • Function : Author
W.J. Briscoe
  • Function : Author
W.K. Brooks
V.D. Burkert
  • Function : Author
C. Butuceanu
  • Function : Author
J.R. Calarco
  • Function : Author
S.L. Careccia
  • Function : Author
D.S. Carman
  • Function : Author
L. Casey
  • Function : Author
S. Chen
  • Function : Author
L. Cheng
P.L. Cole
P. Collins
  • Function : Author
P. Coltharp
  • Function : Author
D. Crabb
  • Function : Author
V. Crede
  • Function : Author
N. Dashyan
  • Function : Author
R. de Vita
  • Function : Author
E. de Sanctis
  • Function : Author
P.V. Degtyarenko
  • Function : Author
A. Deur
R. Dickson
  • Function : Author
C. Djalali
  • Function : Author
G.E. Dodge
  • Function : Author
J. Donnelly
  • Function : Author
D. Doughty
  • Function : Author
M. Dugger
  • Function : Author
O.P. Dzyubak
  • Function : Author
H. Egiyan
K.S. Egiyan
  • Function : Author
L. El Fassi
  • Function : Author
L. Elouadrhiri
  • Function : Author
P. Eugenio
  • Function : Author
G. Fedotov
  • Function : Author
G. Feldman
  • Function : Author
H. Funsten
  • Function : Author
G. Gavalian
  • Function : Author
N. Gevorgyan
  • Function : Author
G.P. Gilfoyle
K.L. Giovanetti
  • Function : Author
J.T. Goetz
  • Function : Author
W. Gohn
  • Function : Author
A. Gonenc
  • Function : Author
R.W. Gothe
K.A. Griffioen
  • Function : Author
N. Guler
  • Function : Author
L. Guo
  • Function : Author
V. Gyurjyan
  • Function : Author
K. Hafidi
  • Function : Author
H. Hakobyan
  • Function : Author
C. Hanretty
  • Function : Author
N. Hassall
  • Function : Author
F.W. Hersman
  • Function : Author
I. Hleiqawi
  • Function : Author
M. Holtrop
C.E. Hyde-Wright
  • Function : Author
Y. Ilieva
  • Function : Author
B.S. Ishkhanov
  • Function : Author
E.L. Isupov
  • Function : Author
D. Jenkins
  • Function : Author
J.R. Johnstone
  • Function : Author
K. Joo
  • Function : Author
H.G. Juengst
  • Function : Author
N. Kalantarians
  • Function : Author
J.D. Kellie
  • Function : Author
M. Khandaker
W. Kim
  • Function : Author
A. Klein
  • Function : Author
F.J. Klein
  • Function : Author
M. Kossov
  • Function : Author
Z. Krahn
  • Function : Author
L.H. Kramer
  • Function : Author
V. Kubarovsky
  • Function : Author
J. Kuhn
  • Function : Author
S.V. Kuleshov
  • Function : Author
V. Kuznetsov
  • Function : Author
J. Lachniet
  • Function : Author
J.M. Laget
  • Function : Author
J. Langheinrich
  • Function : Author
D. Lawrence
K. Livingston
  • Function : Author
H.Y. Lu
  • Function : Author
N. Markov
  • Function : Author
P. Mattione
  • Function : Author
B.A. Mecking
  • Function : Author
M.D. Mestayer
  • Function : Author
C.A. Meyer
  • Function : Author
T. Mibe
K. Mikhailov
  • Function : Author
M. Mirazita
  • Function : Author
R. Miskimen
  • Function : Author
V. Mokeev
K. Moriya
  • Function : Author
M. Moteabbed
  • Function : Author
E. Munevar
  • Function : Author
G.S. Mutchler
  • Function : Author
P. Nadel-Turonski
  • Function : Author
R. Nasseripour
  • Function : Author
G. Niculescu
  • Function : Author
I. Niculescu
  • Function : Author
B.B. Niczyporuk
  • Function : Author
M.R. Niroula
  • Function : Author
R.A. Niyazov
  • Function : Author
M. Nozar
  • Function : Author
M. Osipenko
A.I. Ostrovidov
  • Function : Author
K. Park
  • Function : Author
E. Pasyuk
C. Paterson
  • Function : Author
S. Anefalos Pereira
  • Function : Author
J. Pierce
  • Function : Author
N. Pivnyuk
  • Function : Author
O. Pogorelko
  • Function : Author
S. Pozdniakov
  • Function : Author
J.W. Price
  • Function : Author
Y. Prok
  • Function : Author
B.A. Raue
  • Function : Author
G. Ricco
  • Function : Author
M. Ripani
B.G. Ritchie
  • Function : Author
F. Ronchetti
  • Function : Author
G. Rosner
  • Function : Author
P. Rossi
  • Function : Author
J. Salamanca
  • Function : Author
C. Salgado
  • Function : Author
J.P. Santoro
  • Function : Author
V. Sapunenko
  • Function : Author
R.A. Schumacher
  • Function : Author
V.S. Serov
  • Function : Author
Y.G. Sharabian
  • Function : Author
D. Sharov
  • Function : Author
N.V. Shvedunov
  • Function : Author
E.S. Smith
  • Function : Author
L.C. Smith
  • Function : Author
D.I. Sober
  • Function : Author
D. Sokhan
  • Function : Author
A. Stavinsky
  • Function : Author
S.S. Stepanyan
  • Function : Author
S. Stepanyan
  • Function : Author
B.E. Stokes
  • Function : Author
P. Stoler
  • Function : Author
S. Strauch
  • Function : Author
M. Taiuti
  • Function : Author
D.J. Tedeschi
  • Function : Author
U. Thoma
  • Function : Author
A. Tkabladze
  • Function : Author
S. Tkachenko
  • Function : Author
C. Tur
  • Function : Author
M. Ungaro
  • Function : Author
M.F. Vineyard
  • Function : Author
A.V. Vlassov
  • Function : Author
D.P. Watts
  • Function : Author
L.B. Weinstein
  • Function : Author
D.P. Weygand
  • Function : Author
M. Williams
  • Function : Author
E. Wolin
  • Function : Author
M.H. Wood
  • Function : Author
A. Yegneswaran
  • Function : Author
L. Zana
J. Zhang
  • Function : Author
B. Zhao
  • Function : Author
Z.W. Zhao
  • Function : Author

Abstract

We examine the results of two measurements by the CLAS collaboration, one of which claimed evidence for a $\Theta^{+}$ pentaquark, whilst 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.

Keywords

Dates and versions

in2p3-00173955 , version 1 (21-09-2007)

Identifiers

Cite

D.G. Ireland, B. Mckinnon, D. Protopopescu, P. Ambrozewicz, M. Anghinolfi, et al.. A Bayesian analysis of pentaquark signals from CLAS data. Physical Review Letters, 2007, 100, pp.052001. ⟨10.1103/PhysRevLett.100.052001⟩. ⟨in2p3-00173955⟩
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