Charmless decays of bottom mesons and a fourth generation
Journal
Physical Review Letters
Journal Volume
55
Journal Issue
25
Pages
1521-1524
Date Issued
1985
Author(s)
Abstract
B decays to charmless inclusive final states are discussed. The generic process is the loop-induced b sg*, g* being an on-shell or off-shell gluon. We include the cases when the gluon momentum is lightlike, timelike, and spacelike. The timelike case includes g*qq and gg splitup. Our findings are as follows: (1) B(b sg*)1% for three generations; (2) an experimental observation of charmless branching ratio 5% would (conservatively) imply the possibility of a fourth generation; and (3) charmless branching ratio >20% would be difficult to accomodate in the standard model even with four families. © 1987 The American Physical Society.
Type
journal article