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 Publish in OALib Journal ISSN: 2333-9721 APC: Only $99  Views Downloads  Relative Articles Diffractive Dissociation into π- π- π+ Final States at COMPASS Diffractive Dissociation into Three-Pion Final States at COMPASS Observation of a J^PC = 1-+ exotic resonance in diffractive dissociation of 190 GeV/c pi- into pi- pi- pi+ The COMPASS sandwich veto detector and a first look at kaonic final states from a$π^-$($190\,\textrm{GeV}) beam on a proton target Diffractive pion production at COMPASS -- First results on 3$π$ final states - neutral mode Baryon Spectroscopy at COMPASS Diffractive Dissociation of High Momentum Pions Diffractive dissociation into $K_sK^{\pm}π^{\mp}π^{-}$ final states Hadron Spectroscopy with COMPASS Measurement of Light-Cone Wave Functions by Diffractive Dissociation More...
Physics  2010

# Diffractive Dissociation of 190 GeV/c $π^-$ into $π^-π^+π^-$ Final States at COMPASS

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Abstract:

We present results from a Partial-Wave Analysis (PWA) of diffractive dissociation of 190 GeV/c $\pi^-$ into $\pi^-\pi^+\pi^-$ final states on nuclear targets. A PWA of the data sample taken during a COMPASS pilot run in 2004 on a Pb target showed a significant spin-exotic $J^{PC} = 1^{-+}$ resonance consistent with the controversial $\pi_1(1600)$, which is considered to be a candidate for a non-$q\bar{q}$ mesonic state. In 2008 COMPASS collected a large diffractive $\pi^-\pi^+\pi^-$ data sample using a hydrogen target. A first comparison with the 2004 data shows a strong target dependence of the production strength of states with spin projections $M = 0$ and 1.

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