Hints of large tanβ in flavour physics

By G. Isidori, P. Paradisi. 2006

196 citations recorded by the source corpus.

Abstract Motivated by the first evidence of the B u → τ ν transition reported by Belle [Belle Collaboration, K. Ikado, et al., hep-ex/0604018] and by the precise Δ M B s measurement by CDF [CDF Collaboration, G. Gomez-Ceballos, Talk presented at FPCP 2006, Vancouver, Canada, 9–12 April 2006, http://fpcp2006.triumf.ca/ ; D∅ Collaboration, V. Abazov, hep-ex/0603029], we analyse these and other low-energy observables in the framework of the MSSM at large tan β . We show that for heavy squarks and A terms ( M q ˜ , A U ≳ 1  TeV ) such scenario has several interesting virtues. It naturally describes: (i) a suppression of B ( B u → τ ν ) of (10–40)%, (ii) a sizable enhancement of ( g − 2 ) μ , (iii) a heavy SM-like Higgs ( m h 0 ∼ 120  GeV ), (iv) small non-standard effects in Δ M B s and B ( B → X s γ ) (in agreement with present observations). The possibilities to find more convincing evidences of such scenario, with improved data on B ( B u → τ ν ) , B ( B s , d → l + l − ) and other low-energy observables, are briefly discussed.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/4a4651b14974f21dc50253984ce0a875af9af094

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In Nuclear and High Energy Physics

  1. David M. Straub
  2. W. Altmannshofer
  3. Andrzej Buras
  4. Stefania Gori
  5. P. Paradisi
  6. J. Girrbach
  7. M. Jung
  8. S. Descotes-Genon

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