Upper limit on the $\eta \to \pi^+ \pi^-$ branching ratio with the KLOE detector - INSPIRE

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Upper limit on the $\eta \to \pi^+ \pi^-$ branching ratio with the KLOE detector

KLOE

Collaboration

•

F. Ambrosino

Nov, 2004

8 pages

Published in:

Phys.Lett.B 606 (2005) 276-280

e-Print:

hep-ex/0411030 [hep-ex]

DOI:

10.1016/j.physletb.2004.12.025

PDG:

{{\mathit \eta}}

\rightarrow

{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}

Experiments:

FRASCATI-DAFNE-KLOE

View in:

ADS Abstract Service

reference search36 citations

Citations per year

Abstract: (Elsevier)

We have searched with the KLOE detector for the P and CP violating decay η→π+π− in a sample of 1.55×107 η 's from the decay ϕ→ηγ of ϕ -mesons produced in e+e− annihilations at DAΦNE. No signal is found. We obtain the upper limit BR(η→π+π−)<1.3×10−5 at 90% confidence level.

Note:

8 pages, 3 figures

13.25.Jk
11.30.Er
14.40.Aq
Decays of eta mesons
Discrete symmetries
Decays of η mesons
electron positron: colliding beams
electron positron: annihilation
Phi(1020): electroproduction
Phi(1020): radiative decay

References(10)

Figures(3)

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