Search for Theta+ (1540) Pentaquark in High-Statistics Measurement of gammap-->K0K+n at CLAS.
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.
Battaglieri
M
M
Istituto Nazionale di Fisica Nucleare, Sezione di Genova, and Dipartimento di Fisica, Universitá di Genova, 16146 Genova, Italy.
De Vita
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Kubarovsky
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Guo
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Mutchler
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Stoler
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Weygand
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Ambrozewicz
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Anghinolfi
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Asryan
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Avakian
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Bagdasaryan
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Baillie
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Ball
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Baltzell
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Batourine
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Bedlinskiy
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Bellis
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Benmouna
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Berman
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Biselli
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Bouchigny
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Boiarinov
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Bradford
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Branford
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Briscoe
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Brooks
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Bültmann
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Burkert
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Butuceanu
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Calarco
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Careccia
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Carman
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Chen
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Clinton
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Cole
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Coltharp
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Crabb
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Crannell
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Cummings
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Dale
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De Sanctis
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Degtyarenko
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Deur
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Dharmawardane
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Djalali
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Dodge
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Donnelly
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Doughty
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Dugger
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Dzyubak
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Egiyan
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Egiyan
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Elouadrhiri
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Eugenio
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Fedotov
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Funsten
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Gabrielyan
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Garçon
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Gasparian
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Gavalian
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Gilfoyle
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Giovanetti
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Girod
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Glamazdin
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Goett
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Goetz
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Golovach
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Gonenc
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Gordon
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Gothe
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Griffioen
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Guidal
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Guler
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Gyurjyan
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Hadjidakis
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Hakobyan
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Hardie
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Hersman
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Hicks
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Hleiqawi
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Holtrop
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Hyde-Wright
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Ilieva
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Ireland
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Ishkhanov
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Ito
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Jenkins
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Jo
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Joo
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Juengst
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Kellie
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Khandaker
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Kim
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Klein
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Klein
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Klimenko
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Kossov
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Kramer
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Kuhn
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Kuhn
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Kuleshov
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Lachniet
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Laget
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Langheinrich
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Lawrence
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Lee
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Livingston
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McKinnon
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Mecking
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Melone
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Mestayer
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Meyer
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Mibe
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Mikhailov
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Minehart
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Mirazita
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Miskimen
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Mochalov
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Mokeev
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Morand
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Morrow
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Nadel-Turonski
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Nakagawa
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Nasseripour
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Niccolai
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Niculescu
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Niculescu
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Niczyporuk
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Niyazov
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Nozar
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Osipenko
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Ostrovidov
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Park
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Pasyuk
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Paterson
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Pierce
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Pivnyuk
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Pocanic
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Pogorelko
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Pozdniakov
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Price
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Prok
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Protopopescu
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Raue
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Riccardi
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Ricco
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Ripani
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Ritchie
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Ronchetti
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Rosner
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Rossi
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Sabatié
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Salgado
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Santoro
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Schumacher
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Stavinsky
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Stepanyan
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Stokes
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Strakovsky
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Strauch
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Taiuti
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Tedeschi
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Teymurazyan
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Thoma
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Tkabladze
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Tkachenko
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Todor
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Tur
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Ungaro
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Vineyard
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Vlassov
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Weinstein
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Williams
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Wolin
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Wood
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Yegneswaran
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Zana
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Zhang
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Zhao
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