Measurement of the branching ratio for Υ(1S) state intoπ + π − andsearch for decaysΥ(1S)→π + π −,K + K −,p $$\bar p$$

Baru, S.E.; Beilin, M. V.; Blinov, A. E.; Blinov, V.E.; Bondar, A.; Bukin, A. D.; Groshev, V.R.; Klimenko, S.; Kolachev, G. M.; Onuchin, A. P.; Panin, V.S.; Protopopov, I.Ya.; Shamov, A.G.; Sidorov, V.; Skovpen, Yu. I.; Skrinsky, A.N.; Tayursky, V.A.; Telnov, V. I.; Tikhonov, Yu. A.; Tumaikin, G.M.; Undrus, A.; Воробйов, А.І.; Zilich, V. N.

doi:10.1007/bf01566650

Z. Phys. C - Particles and Fields

1992

DOI: 10.1007/bf01566650

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Measurement of the branching ratio for Υ(1S) state intoπ + π − andsearch for decaysΥ(1S)→π + π −,K + K −,p $$\bar p$$

S.E. Baru¹,

M. V. Beilin²,

A. E. Blinov³

et al.

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1992

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Cited by 6 publications

(2 citation statements)

References 19 publications

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“…This result is significantly smaller than the upper bound (12) set by experiment (for a discussion see also Ref. [16]). The coupling of a Z 0 boson to nucleons is well known (see, for instance, [17]).…”

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confidence: 54%

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New bounds on lepton flavor violating decays of vector mesons and theZ0boson

et al. 2011

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We give an estimate for the upper bounds on rates of lepton flavor violating (LFV) decays M → µ ± e ∓ of vector mesons M = ρ 0 , ω, φ, J/ψ, Υ and the Z 0 boson in a model independent way, analyzing the corresponding lowest dimension effective operators. These operators also contribute to nuclear µ − e-conversion. Based on this observation and using the existing experimental limits on this LFV nuclear process, we show that the studied two-body LFV decays of vector bosons are strongly suppressed independent on the explicit realization of new physics. The upper limits on the rates of some of these decays are significantly more stringent than similar limits known in the literature. In view of these results experimental observation of the two-body LFV decays of vector bosons looks presently unrealistic.

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confidence: 54%

“…Assuming that no accidental cancellations occur between the different terms in (20) and using the values of the vector boson-nucleon couplings from Eq. (8), (11), (16) and (17) we get for non-derivative couplings…”

mentioning

confidence: 95%

New bounds on lepton flavor violating decays of vector mesons and theZ0boson

et al. 2011

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Determination of the ?(1S) leptonic width

Baru

Blinov

et al. 1992

Z. Phys. C - Particles and Fields

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The measurement ofR ine + e −-annihilation at center-of-mass energies between 7.25 and 10.34 GeV

Blinov

Bondar

et al. 1996

Z. Phys. C - Particles and Fields

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Measurement of the branching ratio for Υ(1S) state intoπ + π − andsearch for decaysΥ(1S)→π + π −,K + K −,p $$\bar p$$

Cited by 6 publications

References 19 publications

New bounds on lepton flavor violating decays of vector mesons and theZ0boson

New bounds on lepton flavor violating decays of vector mesons and theZ0boson

Determination of the ?(1S) leptonic width

The measurement ofR ine + e −-annihilation at center-of-mass energies between 7.25 and 10.34 GeV

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