Recent Results on Hadron Spectroscopy and Charmonium from BESIII

Journal Article · Mon Oct 24 04:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3647140· OSTI ID:21608393

Fang, Liu ^[1]

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1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)

pp-bar mass threshold enhancement is studied using the data sample of J/{psi} and y(2S) collected with BESIII detector in 2009. The enhancement is evident in J/{psi} radiative decay, which is consistent with BESII results. No significance narrow enhancement is observed in {psi}(2S) radiative decay. The structure of Xlpar;1835 is also confirmed in J/{psi} = {gamma}{eta}'{pi}{sub +}{pi}{sup -} at BESIII. The spin-singlet P-wave charmonium state h{sub c}(1P) is studied at BESIII, the mass spectra recoiling against the {pi}{sup 0} in the decay {psi}(2S) = {pi}{sup 0}h{sub c} both in h{sub c} inclusive decay and in the final states with a tagged E1-transition photon from h{sub c} {yields} {gamma}{eta}{sub r} are fitted to extract the number of hc signals.

• OSTI ID: 21608393
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1374; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
BARYON-BARYON INTERACTIONS
BOSONS
CHARMONIUM
DECAY
E1-TRANSITIONS
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
ETA PRIME-958 MESONS
FERMIONS
FIELD THEORIES
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
J PSI-3097 MESONS
MASS
MASS SPECTRA
MASSLESS PARTICLES
MEASURING INSTRUMENTS
MESONS
MULTIPARTICLE SPECTROMETERS
MULTIPLE PRODUCTION
MULTIPOLE TRANSITIONS
NEUTRON SPECTROSCOPY
NUCLEON-ANTINUCLEON INTERACTIONS
P WAVES
PARTIAL WAVES
PARTICLE DECAY
PARTICLE IDENTIFICATION
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PHOTONS
PIONS
PROTON-ANTIPROTON INTERACTIONS
PSEUDOSCALAR MESONS
PSI-3770 MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKONIUM
QUARKS
RADIATIVE DECAY
REST MASS
SPECTRA
SPECTROMETERS
SPECTROSCOPY
SPIN
VECTOR MESONS