Abstract
We calculate direct CP-violating observables in charged B {yields} VV decays arising from the interference of amplitudes with different strong and CKM phases. The perturbative strong phases develop at order {alpha}{sub s} from absorptive parts of one-loop matrix elements of the next-to-leading logarithm corrected effective Hamiltonian. CPT constraints are maintained. Based on this model, we find that partial rate asymmetries between charge conjugate B{sup {+-}} decays can be as high as 15-30% for certain channels with branching ratios in the 10{sup -6} range. The small values of the coefficients of angular correlations, which we calculated previously to be of order 10{sup -2}, are not significantly degraded by the strong phases. The charge asymmetries of rates and angular distributions would provide unambiguous evidence for direct CP violation. (orig.)
Kramer, G;
[1]
Palmer, W F;
[2]
Simma, H
[3]
- Hamburg Univ. (Germany). 2. Inst. fuer Theoretische Physik
- Ohio State Univ., Columbus, OH (United States). Dept. of Physics
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
Citation Formats
Kramer, G, Palmer, W F, and Simma, H.
CP violation and strong phases from penguins in B{sup {+-}}{yields}VV decays.
Germany: N. p.,
1993.
Web.
Kramer, G, Palmer, W F, & Simma, H.
CP violation and strong phases from penguins in B{sup {+-}}{yields}VV decays.
Germany.
Kramer, G, Palmer, W F, and Simma, H.
1993.
"CP violation and strong phases from penguins in B{sup {+-}}{yields}VV decays."
Germany.
@misc{etde_10153225,
title = {CP violation and strong phases from penguins in B{sup {+-}}{yields}VV decays}
author = {Kramer, G, Palmer, W F, and Simma, H}
abstractNote = {We calculate direct CP-violating observables in charged B {yields} VV decays arising from the interference of amplitudes with different strong and CKM phases. The perturbative strong phases develop at order {alpha}{sub s} from absorptive parts of one-loop matrix elements of the next-to-leading logarithm corrected effective Hamiltonian. CPT constraints are maintained. Based on this model, we find that partial rate asymmetries between charge conjugate B{sup {+-}} decays can be as high as 15-30% for certain channels with branching ratios in the 10{sup -6} range. The small values of the coefficients of angular correlations, which we calculated previously to be of order 10{sup -2}, are not significantly degraded by the strong phases. The charge asymmetries of rates and angular distributions would provide unambiguous evidence for direct CP violation. (orig.)}
place = {Germany}
year = {1993}
month = {Dec}
}
title = {CP violation and strong phases from penguins in B{sup {+-}}{yields}VV decays}
author = {Kramer, G, Palmer, W F, and Simma, H}
abstractNote = {We calculate direct CP-violating observables in charged B {yields} VV decays arising from the interference of amplitudes with different strong and CKM phases. The perturbative strong phases develop at order {alpha}{sub s} from absorptive parts of one-loop matrix elements of the next-to-leading logarithm corrected effective Hamiltonian. CPT constraints are maintained. Based on this model, we find that partial rate asymmetries between charge conjugate B{sup {+-}} decays can be as high as 15-30% for certain channels with branching ratios in the 10{sup -6} range. The small values of the coefficients of angular correlations, which we calculated previously to be of order 10{sup -2}, are not significantly degraded by the strong phases. The charge asymmetries of rates and angular distributions would provide unambiguous evidence for direct CP violation. (orig.)}
place = {Germany}
year = {1993}
month = {Dec}
}