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An initial study of mesons and baryons containing strange quarks with GlueX | | GlueX Collaboration
; A. AlekSejevs
; S. Barkanova
; M. Dugger
; B. Ritchie
; I. Senderovich
; E. Anassontzis
; P. Ioannou
; C. Kourkoumeli
; G. Voulgaris
; N. Jarvis
; W. Levine
; P. Mattione
; W. McGinley
; C. A. Meyer
; R. Schumacher
; M. Staib
; P. Collins
; F. Klein
; D. Sober
; D. Doughty
; A. Barnes
; R. Jones
; J. McIntyre
; F. Mokaya
; B. Pratt
; W. Boeglin
; L. Guo
; P. Khetarpal
; E. Pooser
; J. Reinhold
; H. Al Ghoul
; S. Capstick
; V. Crede
; P. Eugenio
; A. Ostrovidov
; N. Sparks
; A. Tsaris
; D. Ireland
; K. Livingston
; D. Bennett
; J. Bennett
; J. Frye
; M. Lara
; J. Leckey
; R. Mitchell
; K. Moriya
; M. R. Shepherd
; A. Szczepaniak
; R. Miskimen
; A. Mushkarenkov
; B. Guegan
; J. Hardin
; J. Stevens
; M. Williams
; A. Ponosov
; S. Somov
; C. Salgado
; P. Ambrozewicz
; A. Gasparian
; R. Pedroni
; T. Black
; L. Gan
; S. Dobbs
; K. K. Seth
; A. Tomaradze
; J. Dudek
; F. Close
; E. Swanson
; S. Denisov
; G. Huber
; D. Kolybaba
; S. Krueger
; G. Lolos
; Z. Papandreou
; A. Semenov
; I. Semenova
; M. Tahani
; W. Brooks
; H. Hakobyan
; S. Kuleshov
; O. Soto
; A. Toro
; I. Vega
; R. White
; F. Barbosa
; E. Chudakov
; H. Egiyan
; M. Ito
; D. Lawrence
; M. McCaughan
; M. Pennington
; L. Pentchev
; Y. Qiang
; E. S. Smith
; A. Somov
; S. Taylor
; T. Whitlatch
; E. Wolin
; B. Zihlmann
; | | Date: |
7 May 2013 | | Abstract: | The primary motivation of the GlueX experiment is to search for and
ultimately study the pattern of gluonic excitations in the meson spectrum
produced in $gamma p$ collisions. Recent lattice QCD calculations predict a
rich spectrum of hybrid mesons that have both exotic and non-exotic $J^{PC}$,
corresponding to $qar{q}$ states ($q=u,$ $d,$ or $s$) coupled with a gluonic
field. A thorough study of the hybrid spectrum, including the identification of
the isovector triplet, with charges 0 and $pm1$, and both isoscalar members,
$|sar{s} >$ and $|uar{u} > + |dar{d} >$, for each predicted hybrid
combination of $J^{PC}$, may only be achieved by conducting a systematic
amplitude analysis of many different hadronic final states. Detailed studies of
the performance of the gx detector have indicated that identification of
particular final states with kaons is possible using the baseline detector
configuration. The efficiency of kaon detection coupled with the relatively
lower production cross section for particles containing hidden strangeness will
require a high intensity run in order for analyses of such states to be
feasible. We propose to collect a total of 200 days of physics analysis data at
an average intensity of $5 imes 10^7$ tagged photons on target per second.
This data sample will provide an order of magnitude statistical improvement
over the initial GlueX running, which will allow us to begin a program of
studying mesons and baryons containing strange quarks. In addition, the
increased intensity will permit us to study reactions that may have been
statistically limited in the initial phases of GlueX. Overall, this will lead
to a significant increase in the potential for gx to make key experimental
advances in our knowledge of hybrid mesons and excited $Xi$ baryons. | | Source: | arXiv, 1305.1523 | | Services: | Forum | Review | PDF | Favorites | |
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