Observation of a chi-prime(c2) candidate in gamma gamma ---> D anti-D production at BELLE - INSPIRE

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Observation of a chi-prime(c2) candidate in gamma gamma ---> D anti-D production at BELLE

Belle

Collaboration

•

S. Uehara
(
- KEK, Tsukuba
)

Dec, 2005

6 pages

Published in:

Phys.Rev.Lett. 96 (2006) 082003

e-Print:

hep-ex/0512035 [hep-ex]

DOI:

10.1103/PhysRevLett.96.082003

PDG:

{{\mathit \chi}_{{{c2}}}{(3930)}}

\rightarrow

{{\mathit \gamma}}{{\mathit \gamma}}

Report number:

BELLE-PREPRINT-2005-35,
KEK-PREPRINT-2005-87

Experiments:

KEK-BF-BELLE

View in:

ADS Abstract Service

reference search350 citations

Citations per year

Abstract:

We report on a search for new resonant states in the process gamma gamma --> D Dbar. A candidate C-even charmonium state is observed in the vicinity of 3.93 GeV/c^2. The production rate and the angular distribution in the gamma gamma center-of-mass frame suggest that this state is the previously unobserved chi'_(c2), the 2^3P_2 charmonium state.

14.40.Gx
13.66.Bc
electron positron: colliding beams
exchange: two-photon
photon photon: interaction
D: pair production
resonance: search for
chi/c2(3555): excited state
mass spectrum: (D anti-D)
mass enhancement: (3930)

References(13)

Figures(0)

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