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Search for the Photoexcitation of Exotic Mesons in the pi(+)pi(+)pi(-) System
Physical Review Letters (2009)
  • M Nozar
  • C Salgado
  • DP Weygand
  • L Guo
  • G Adams
  • J Li
  • P Eugenio
  • MJ Amaryan
  • M Anghinolfi
  • G Asryan
  • H Avakian
  • H Bagdasaryan
  • N Baillie
  • JP Ball
  • NA Baltzell
  • S Barrow
  • M Battaglieri
  • I Bedlinskiy
  • M Bektasoglu
  • M Bellis
  • N Benmouna
  • BL Berman
  • AS Biselli
  • L Blaszczyk
  • BE Bonner
  • S Bouchigny
  • S Boiarinov
  • R Bradford
  • D Branford
  • WJ Briscoe
  • WK Brooks
  • S Bultmann
  • VD Burkert
  • C Butuceanu
  • JR Calarco
  • SL Careccia
  • DS Carman
  • B Carnahan
  • L Casey
  • A Cazes
  • S Chen
  • L Cheng
  • PL Cole
  • P Collins
  • P Coltharp
  • D Cords
  • P Corvisiero
  • D Crabb
  • H Crannell
  • V Crede
  • JP Cummings
  • D Dale
  • N Dashyan
  • R De Masi
  • R De Vita
  • E De Sanctis
  • PV Degtyarenko
  • H Denizli
  • L Dennis
  • A Deur
  • KV Dharmawardane
  • KS Dhuga
  • R Dickson
  • C Djalali
  • GE Dodge
  • D Doughty
  • M Dugger
  • S Dytman
  • OP Dzyubak
  • H Egiyan
  • KS Egiyan
  • L El Fassi
  • L Elouadrhiri
  • R Fatemi
  • G Fedotov
  • RJ Feuerbach
  • TA Forest
  • A Fradi
  • H Funsten
  • M Garcon
  • G Gavalian
  • N Gevorgyan
  • GP Gilfoyle
  • KL Giovanetti
  • FX Girod
  • JT Goetz
  • RW Gothe
  • KA Griffioen
  • M Guidal
  • M Guillo
  • N Guler
  • V Gyurjyan
  • C Hadjidakis
  • K Hafidi
  • H Hakobyan
  • C Hanretty
  • J Hardie
  • N Hassall
  • D Heddle
  • FW Hersman
  • K Hicks
  • I Hleiqawi
  • M Holtrop
  • CE Hyde-Wright
  • Y Ilieva
  • DG Ireland
  • BS Ishkhanov
  • EL Isupov
  • MM Ito
  • D Jenkins
  • HS Jo
  • JR Johnstone
  • K Joo
  • HG Juengst
  • N Kalantarians
  • JD Kellie
  • M Khandaker
  • W Kim
  • A Klein
  • FJ Klein
  • M Kossov
  • Z Krahn
  • LH Kramer
  • V Kubarovsky
  • J Kuhn
  • SE Kuhn
  • SV Kuleshov
  • V Kuznetsov
  • J Lachniet
  • JM Laget
  • J Langheinrich
  • D Lawrence
  • K Livingston
  • HY Lu
  • M MacCormick
  • N Markov
  • P Mattione
  • S McAleer
  • B McKinnon
  • JWC McNabb
  • BA Mecking
  • S Mehrabyan
  • MD Mestayer
  • CA Meyer
  • T Mibe
  • K Mikhailov
  • M Mirazita
  • R Miskimen
  • V Mokeev
  • B Moreno
  • K Moriya
  • SA Morrow
  • M Moteabbed
  • J Mueller
  • E Munevar
  • GS Mutchler
  • P Nadel-Turonski
  • R Nasseripour
  • S Niccolai
  • G Niculescu
  • I Niculescu
  • BB Niczyporuk
  • MR Niroula
  • RA Niyazov
  • GV O'Rielly
  • M Osipenko
  • AI Ostrovidov
  • K Park
  • E Pasyuk
  • C Paterson
  • SA Pereira
  • SA Philips
  • J Pierce
  • N Pivnyuk
  • D Pocanic
  • O Pogorelko
  • E Polli
  • I Popa
  • S Pozdniakov
  • BM Preedom
  • JW Price
  • Y Prok
  • D Protopopescu
  • LM Qin
  • BA Raue
  • G Riccardi
  • G Ricco
  • M Ripani
  • BG Ritchie
  • F Ronchetti
  • G Rosner
  • P Rossi
  • PD Rubin
  • F Sabatie
  • J Salamanca
  • JP Santoro
  • V Sapunenko
  • RA Schumacher
  • VS Serov
  • YG Sharabian
  • D Sharov
  • NV Shvedunov
  • AV Skabelin
  • ES Smith
  • LC Smith
  • DI Sober
  • D Sokhan
  • A Stavinsky
  • SS Stepanyan
  • S Stepanyan
  • BE Stokes
  • P Stoler
  • II Strakovsky
  • S Strauch
  • M Taiuti
  • DJ Tedeschi
  • U Thoma
  • A Tkabladze
  • S Tkachenko
  • L Todor
  • M Ungaro
  • MF Vineyard
  • AV Vlassov
  • DP Watts
  • LB Weinstein
  • M Williams, University of Massachusetts - Amherst
  • E Wolin
  • MH Wood
  • A Yegneswaran
  • L Zana
  • J Zhang
  • B Zhao
  • ZW Zhao
Abstract
A search for exotic mesons in the pi;{+}pi;{+}pi;{-} system photoproduced by the charge exchange reaction gammap-->pi;{+}pi;{+}pi;{-}(n) was carried out by the CLAS Collaboration at Jefferson Lab. A tagged-photon beam with energies in the 4.8 to 5.4 GeV range, produced through bremsstrahlung from a 5.744 GeV electron beam, was incident on a liquid-hydrogen target. A partial wave analysis was performed on a sample of 83 000 events, the highest such statistics to date in this reaction at these energies. The main objective of this study was to look for the photoproduction of an exotic J;{PC}=1;{-+} resonant state in the 1 to 2 GeV mass range. Our partial wave analysis shows production of the a_{2}(1320) and the pi_{2}(1670) mesons, but no evidence for the a_{1}(1260), nor the pi_{1}(1600) exotic state at the expected levels. An upper limit of 13.5 nb is determined for the exotic pi_{1}(1600) cross section, less than 2% of the a_{2}(1320) production.
Disciplines
Publication Date
January 1, 2009
Publisher Statement
Doi:10.1103/PhysRevLett.102.102002
Citation Information
M Nozar, C Salgado, DP Weygand, L Guo, et al.. "Search for the Photoexcitation of Exotic Mesons in the pi(+)pi(+)pi(-) System" Physical Review Letters Vol. 102 Iss. 10 (2009)
Available at: http://works.bepress.com/michael_williams/10/