A Search for the Xi (2.2) in the $\Upsilon$ Region

Behrends, S.; Chadwick, K.; Chauveau, J.; Gentile, T.; Guida, Jan M.; Guida, Joan A.; Melissinos, A.C.; Olsen, S.L.; Parkhurst, G.; Peterson, D.

doi:10.1016/0370-2693(84)90244-2

A Search for the Xi (2.2) in the $\Upsilon$ Region

CLEO

Collaboration

Dec, 1983

4 pages

Published in:

Phys.Lett.B 137 (1984) 277-280

Published: 1984

DOI:

10.1016/0370-2693(84)90244-2

Report number:

CLNS-83/590,
CLEO-83-11

Experiments:

CESR-CLEO,
CLEO

View in:

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Abstract: (Elsevier)

We have searched in the decays of the ϒ(1S), ϒ(2S) and B mesons for the narrow state, γ, seen by the Mark II group in radiative ψ decay. We find the product branching fractions B [ ϒ (1 S ) → γγ ]· B [ γ → K + K − ], B [ ϒ (2 S ) → γ γ ]· B [ γ → K + K − ] and B [B → γ X]· B [ γ → K + K − ] to be less than 2×10 −4 , 9×10 −5 and 3×10 −3 , respectively at 90% confidence level. These limits constrain theoretical models if the γ is interpreted as a Higgs boson.

ELECTRON POSITRON: COLLIDING BEAMS
COLLIDING BEAMS: ELECTRON POSITRON
ELECTRON POSITRON: ANNIHILATION
ANNIHILATION: ELECTRON POSITRON
UPSILON(9460): RADIATIVE DECAY
RADIATIVE DECAY: UPSILON(9460)
UPSILON(10020): RADIATIVE DECAY
RADIATIVE DECAY: UPSILON(10020)
B: DECAY
DECAY: B

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Figures(0)

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A Search for the Xi (2.2) in the Υ\UpsilonΥ Region

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A Search for the Xi (2.2) in the $\Upsilon$ Region