Study of ${\chi }_{cJ}$ decaying into $\varphi$ $K^{\ast }(892)$ $\bar{K}$

Abstract

Using a data sample of 106 million $\psi (3686)$ events collected with the BESIII detector operated at the BEPCII storage ring, we study for the first time the decay ${\chi }_{cJ}\to \varphi K_S^0{K}^{\pm }{\pi }^{\mp }$ and ${\chi }_{cJ}\to \varphi K^{+}{K}^{-}{\pi }^0$ in the E1 radiative transition $\psi (3686)\to \gamma {\chi }_{cJ}$. The decays are dominated by the three-body decay ${\chi }_{cJ}\to \varphi K^{\ast }(892)\bar{K}$. We measure branching fractions for this reaction via the neutral and charged $K^{\ast }(892)$ and find them consistent with each other within the expectation of isospin symmetry. In the $K\bar{K}\pi$ invariant mass distribution a structure near the $K^{\ast }(892)\bar{K}$ mass threshold is observed, and the corresponding mass and width are measured to be $1412\pm 4(stat.)\pm 8(sys.)\mathrm{MeV}/c^2$ and $\Gamma$ = $84\pm 12(stat.)\pm 40(sys.)\mathrm{MeV}$, respectively. The observed state favors an assignment to the $h_1(1380)$, considering its possible $J^{PC}$ and comparing its mass, width and decay mode to those reported in the Particle Data Group.

17 pages, 24 figures

References in corpus (21)

• PYTHIA 6.4 Physics and Manual
• Parton distributions for the LHC
• New parton distributions for collider physics
• Event generation with SHERPA 1.1
• Dark Matter Results from 225 Live Days of XENON100 Data
• First results from DAMA/LIBRA and the combined results with DAMA/NaI
• Results from a Search for Light-Mass Dark Matter with a P-type Point Contact Germanium Detector
• Constraints on Dark Matter from Colliders
• Results from a Low-Energy Analysis of the CDMS II Germanium Data
• Threshold resummation for squark-antisquark and gluino-pair production at the LHC
• A Tentative Gamma-Ray Line from Dark Matter Annihilation at the Fermi Large Area Telescope
• Soft gluon resummation for the production of gluino-gluino and squark-antisquark pairs at the LHC
• Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
• First dark matter search results from a 4-kg CF${}_3$I bubble chamber operated in a deep underground site
• Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using $\sqrt{s}=8$ TeV proton--proton collision data
• Measurement of the muon reconstruction performance of the ATLAS detector using 2011 and 2012 LHC proton-proton collision data
• Search for photon line-like signatures from Dark Matter annihilations with H.E.S.S
• Constraints on Low-Mass WIMP Interactions on 19F from PICASSO
• Search for Dark Matter and Large Extra Dimensions in pp Collisions Yielding a Photon and Missing Transverse Energy
• Search for dark matter in events with a Z boson and missing transverse momentum in pp collisions at $\sqrt{s}$=8 TeV with the ATLAS detector
• Search for Large Extra Dimensions via Single Photon plus Missing Energy Final States at sqrt(s) = 1.96 TeV

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