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SUMMARY:Search for $\\pi_1(1600)$ in a three-pion system at GlueX
DTSTART:20260721T130000Z
DTEND:20260721T134500Z
DTSTAMP:20260721T014000Z
UID:indico-event-18444@indico.global
DESCRIPTION:Speakers: Ilia Belov\n\nAbstract:\nThe GlueX experiment in Hal
 l D at Jefferson Lab is designed for studiesof the light meson spectrum wi
 th an emphasis on searches for hybridmesons that have exotic quantum numbe
 rs and therefore cannot beclassified as conventional hadrons. Advanced sea
 rches for spin-parityexotic mesons are performed through the application o
 f Partial WaveAnalysis (PWA) techniques.In this talk\, I present the searc
 h for the $\\pi_1(1600)$ meson with$1^{-+}$ quantum numbers by means of th
 e PWA of the $\\pi^{+}\\pi^{-}\\pi^{-}$ system produced in the $\\gamma\\
 \,p\\to\\pi^{+}\\pi^{-}\\pi^{-}\\Delta^{++}(\\to p\\pi^{+})$ reaction.In t
 he approximation of an isobar decay\, data with the selected three-pionfin
 al states are fitted as coherent sums of partial-wave amplitudesdefined in
  the reflectivity basis. The PWA techniques are applied inbins of $m(3\\pi
 )$ allowing to extract the overall $m(3\\pi)$ lineshapefor each of the mod
 el contributions. The main interest lies inestablishing the existence of a
  resonant $1^{-+}$ contribution in the$P$-wave $\\rho\\\,\\pi^{-}$ and $D$
 -wave $f_{2}\\\,\\pi^{-}$ configurations.\n\nhttps://indico.global/event/1
 8444/
LOCATION:NB2/158 (RUB)
URL:https://indico.global/event/18444/
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