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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2006, Volume 84, Issue 9, Pages 569–574
(Mi jetpl1174)
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This article is cited in 21 scientific papers (total in 21 papers)
FIELDS, PARTICLES, AND NUCLEI
More about sgoldstino interpretation of HyperCP events
S. V. Demidov, D. S. Gorbunov Institute for Nuclear Research RAS
Abstract:
We further discuss possible sgoldstino interpretation of the observation, reported by the HyperCP collaboration, of three $\Sigma^+\to p\mu^+\mu^-$ decay events with dimuon invariant mass $214.3$ MeV within detector resolution. With sgoldstino mass equal to $214.3$ MeV, this interpretation can be verified at existing and future $B$- and $\phi$-factories. We find that the most natural values of the branching ratios of two-body $B$- and $D$-meson decays to sgoldstino $P$ and vector meson $V$ are about $10^{-6}\div10^{-7}$. The branching ratios of $\phi$-meson decay $\phi\to P\gamma$ are estimated to be in the range $1.8\cdot10^{-13}\div1.6\cdot10^{-7}$, depending on the hierarchy of supersymmetry breaking soft terms. Similar branchings for $\rho$- and $\omega$-mesons are in the range $10^{-14}\div3.4\cdot10^{-7}$.
Received: 05.10.2006
Citation:
S. V. Demidov, D. S. Gorbunov, “More about sgoldstino interpretation of HyperCP events”, Pis'ma v Zh. Èksper. Teoret. Fiz., 84:9 (2006), 569–574; JETP Letters, 84:9 (2006), 479–484
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https://www.mathnet.ru/eng/jetpl1174 https://www.mathnet.ru/eng/jetpl/v84/i9/p569
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Abstract page: | 190 | Full-text PDF : | 65 | References: | 1 |
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