Determining gamma from B --> pi(pi) decays without the CP-asymmetry Cpi(0)pi(0).
Phys Rev Lett
; 94(23): 231802, 2005 Jun 17.
Article
em En
| MEDLINE
| ID: mdl-16090459
ABSTRACT
Factorization based on the soft-collinear effective theory (SCET) can be used to reduce the number of hadronic parameters in an isospin analysis of B --> pi(pi) decays by one. This gives a theoretically precise method for determining the CP violating phase gamma by fitting to the B --> pi(pi) data without Cpi(0)pi(0). SCET predicts that gamma lies close to the isospin bounds. With the current world averages we find gamma = 75 degrees +/- 2 degrees(+9 degrees)(-13 degrees), where the uncertainties are theoretical, then experimental.
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Tipo de estudo:
Prognostic_studies
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En
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Phys Rev Lett
Ano de publicação:
2005
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Article
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Estados Unidos
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EEUU
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