Studyof h{sub c}({sup 1}P{sub 1}) at BESIII

Journal Article · Thu Aug 05 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3483345· OSTI ID:21426406

Jianming, Bian ^[1]

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

Inclusive measurements of the spin-singlet P-wave state of charmonium h{sub c}({sup 1}P{sub 1}) have been performed with a sample of approximately 106 million {psi}(2S) decays collected with the BESIII detector at the BEPCII electron-positron storage ring. We fitted distributions of the mass recoiling against the {pi}{sup 0} in the decay {psi}(2S){pi}{sup 0}h{sub c} both inclusively and with a tag of the E1-transition photon from h{sub c{yields}{gamma}{eta}c} to obtain the following preliminary results:M(h{sub c}) = 3525.16{+-}0.16(stat.) MeV, {Gamma}(h{sub c}) = 0.89{+-}0.57(stat.) MeV, B({psi}(2S){yields}{pi}{sup 0}h{sub c}) = (8.42{+-}1.29(stat.))x10{sup -4}, B({psi}(2S){yields}{pi}{sup 0}h{sub c})xB(h{sub c{yields}{gamma}{eta}c}) = (4.69{+-}0.48(stat.)x10{sup -4}, and B(h{sub c{yields}{gamma}{eta}c}) = (55.7{+-}6.3(stat.))%.

• OSTI ID: 21426406
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1257; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
ANGULAR MOMENTUM
BEIJING ELECTRON-POSITRON COLLIDER
BOSONS
CHARMONIUM
DECAY
E1-TRANSITIONS
ELECTRODYNAMICS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
FIELD THEORIES
HADRONS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LINEAR ACCELERATORS
MAGNETIC MOMENTS
MASS
MASSLESS PARTICLES
MESONS
MEV RANGE
MULTIPOLE TRANSITIONS
P WAVES
PARTIAL WAVES
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PHOTONS
PIONS
PIONS NEUTRAL
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM ELECTRODYNAMICS
QUANTUM FIELD THEORY
QUARKONIUM
REST MASS
SPIN
STORAGE RINGS