Observation of a narrow state decaying into Xi(c)+ pi-

Avery, P.; Freyberger, A.; Lingel, K.; Prescott, C.; Rodriguez, J.; Yang, S.; Yelton, J.; Brandenburg, G.; Cinabro, D.; Liu, T.

doi:10.1103/PhysRevLett.75.4364

Observation of a narrow state decaying into Xi(c)+ pi-

CLEO

Collaboration

•

P. Avery
(
- Florida U.
)

Jul, 1995

12 pages

Published in:

Phys.Rev.Lett. 75 (1995) 4364-4368

e-Print:

hep-ex/9508010 [hep-ex]

DOI:

10.1103/PhysRevLett.75.4364

PDG:

{{\mathit \Xi}_{{{c}}}{(2645)}}

\rightarrow

{{\mathit \Xi}_{{{c}}}^{+}}{{\mathit \pi}^{-}}

Report number:

CLNS-95-1352,
CLEO-95-14

Experiments:

CESR-CLEO-II

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Abstract:

Using data recorded by the CLEO-II detector at CESR, we report the first observation of a narrow state decaying into

\Xi_c~+\pi~-

. The state has mass difference

M(\Xi_c~+\pi~-)-M(\Xi_c~+)

of

178.2\pm0.5\pm1.0

\rm{MeV/c~2}

, and a width of <5.5

\rm{MeV/c~2}

(90\% confidence level limit). The most likely explanation of this new state is that it is the J=\32 spin excitation of the

\Xi_c~0

charmed baryon.

electron positron: colliding beams
colliding beams: electron positron
electron positron: annihilation
annihilation: electron positron
charmed baryon: electroproduction
electroproduction: charmed baryon
K*(892)
mass spectrum: (Xi 2pi)
(Xi 2pi): mass spectrum
Xi/c+

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