Chargino contributions in light of recent $\epsilon'/\epsilon$ - INSPIRE

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Chargino contributions in light of recent $\epsilon'/\epsilon$

Motoi Endo
(
- KEK, Tsukuba and
- Tsukuba, Graduate U. Adv. Studies
)
,
Satoshi Mishima
(
- KEK, Tsukuba
)
,
Daiki Ueda
(
- Tsukuba, Graduate U. Adv. Studies
)
,
Kei Yamamoto
(
- KEK, Tsukuba
)

Aug 4, 2016

5 pages

Published in:

Phys.Lett.B 762 (2016) 493-497

Published: Nov 10, 2016

e-Print:

1608.01444 [hep-ph]

DOI:

10.1016/j.physletb.2016.10.009

Report number:

KEK-TH-1921

View in:

ADS Abstract Service

reference search44 citations

Citations per year

Abstract: (Elsevier)

Recently, the standard model prediction of ϵ′/ϵ was improved, and a discrepancy from the experimental results was reported at the 2.9 σ level. We study the chargino contributions to Z penguin especially with the vacuum stability constraint. The vacuum decay rate is investigated, and it is shown that the discrepancy can be explained if superparticles are lighter than 4–6 TeV. Correlations with B(KL→π0νν¯) and other experimental constraints are also discussed.

Note:

12 pages, 3 figures

vacuum: stability
chargino
correlation
decay rate
sparticle: mass
K0(L): semileptonic decay
penguin
numerical calculations: interpretation of experiments
K0(L) --> pi0 neutrino antineutrino

References(33)

Figures(6)

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)

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