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Search for Theta+ (1540) Pentaquark in High-Statistics Measurement of gammap--K0K+n at CLAS

Authors :
M, Battaglieri
R, De Vita
V, Kubarovsky
L, Guo
G S, Mutchler
P, Stoler
D P, Weygand
P, Ambrozewicz
M, Anghinolfi
G, Asryan
H, Avakian
H, Bagdasaryan
N, Baillie
J P, Ball
N A, Baltzell
V, Batourine
I, Bedlinskiy
M, Bellis
N, Benmouna
B L, Berman
A S, Biselli
S, Bouchigny
S, Boiarinov
R, Bradford
D, Branford
W J, Briscoe
W K, Brooks
S, Bültmann
V D, Burkert
C, Butuceanu
J R, Calarco
S L, Careccia
D S, Carman
S, Chen
E, Clinton
P L, Cole
P, Coltharp
D, Crabb
H, Crannell
J P, Cummings
D, Dale
E, De Sanctis
P V, Degtyarenko
A, Deur
K V, Dharmawardane
C, Djalali
G E, Dodge
J, Donnelly
D, Doughty
M, Dugger
O P, Dzyubak
H, Egiyan
K S, Egiyan
L, Elouadrhiri
P, Eugenio
G, Fedotov
H, Funsten
M Y, Gabrielyan
L, Gan
M, Garçon
A, Gasparian
G, Gavalian
G P, Gilfoyle
K L, Giovanetti
F X, Girod
O, Glamazdin
J, Goett
J T, Goetz
E, Golovach
A, Gonenc
C I O, Gordon
R W, Gothe
K A, Griffioen
M, Guidal
N, Guler
V, Gyurjyan
C, Hadjidakis
R S, Hakobyan
J, Hardie
F W, Hersman
K, Hicks
I, Hleiqawi
M, Holtrop
C E, Hyde-Wright
Y, Ilieva
D G, Ireland
B S, Ishkhanov
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
J, Kuhn
S E, Kuhn
S V, Kuleshov
J, Lachniet
J M, Laget
J, Langheinrich
D, Lawrence
T, Lee
Ji, Li
K, Livingston
B, McKinnon
B A, Mecking
J J, Melone
M D, Mestayer
C A, Meyer
T, Mibe
K, Mikhailov
R, Minehart
M, Mirazita
R, Miskimen
V, Mochalov
V, Mokeev
L, Morand
S A, Morrow
P, Nadel-Turonski
I, Nakagawa
R, Nasseripour
S, Niccolai
G, Niculescu
I, Niculescu
B B, Niczyporuk
R A, Niyazov
M, Nozar
M, Osipenko
A I, Ostrovidov
K, Park
E, Pasyuk
C, Paterson
J, Pierce
N, Pivnyuk
D, Pocanic
O, Pogorelko
S, Pozdniakov
J W, Price
Y, Prok
D, Protopopescu
B A, Raue
G, Riccardi
G, Ricco
M, Ripani
B G, Ritchie
F, Ronchetti
G, Rosner
P, Rossi
F, Sabatié
C, Salgado
J P, Santoro
V, Sapunenko
R A, Schumacher
V S, Serov
Y G, Sharabian
E S, Smith
L C, Smith
D I, Sober
A, Stavinsky
S S, Stepanyan
S, Stepanyan
B E, Stokes
I I, Strakovsky
S, Strauch
M, Taiuti
D J, Tedeschi
A, Teymurazyan
U, Thoma
A, Tkabladze
S, Tkachenko
L, Todor
C, Tur
M, Ungaro
M F, Vineyard
A V, Vlassov
L B, Weinstein
M, Williams
E, Wolin
M H, Wood
A, Yegneswaran
L, Zana
J, Zhang
B, Zhao
Source :
Physical review letters. 96(4)
Publication Year :
2005

Abstract

The exclusive reaction gammap--K0K+n was studied in the photon energy range between 1.6 and 3.8 GeV searching for evidence of the exotic baryon Theta+ (1540)--nK+. The decay to nK+requires the assignment of strangeness S=+1 to any observed resonance. Data were collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility corresponding to an integrated luminosity of 70 pb-1. No evidence for the Theta+ pentaquark was found. Upper limits were set on the production cross section as function of center-of-mass angle and nK+ mass. The 95% C.L. upper limit on the total cross section for a narrow resonance at 1540 MeV was found to be 0.8 nb.

Details

ISSN :
00319007
Volume :
96
Issue :
4
Database :
OpenAIRE
Journal :
Physical review letters
Accession number :
edsair.pmid..........80d46ded974a21b8bcd080fd9c5ba48a

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