QCD Factorization for Charmless Hadronic B_s Decays Revisited

By Hai-Yang Cheng, C. Chua. 2009

139 citations recorded by the source corpus.

Branching fractions and $CP$-violating asymmetries of charmless ${\overline{B}}_{s}\ensuremath{\rightarrow}PP$, $VP$, $VV$ decays ($P$ and $V$ denoting pseudoscalar and vector mesons, respectively) are reexamined in the framework of QCD factorization (QCDF). We take into account subleading power corrections to the penguin annihilation topology and to color-suppressed tree amplitudes that are crucial for resolving the $CP$ puzzles and rate deficit problems with penguin-dominated two-body decays and color-suppressed tree-dominated ${\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ and ${\ensuremath{\rho}}^{0}{\ensuremath{\pi}}^{0}$ modes in the ${B}_{u,d}$ sector. Many of the ${B}_{s}\ensuremath{\rightarrow}{h}_{1}{h}_{2}$ decays can be related to ${B}_{d}\ensuremath{\rightarrow}{h}_{1}{h}_{2}$ ones via $U$-spin or SU(3) symmetry. Some useful model-independent relations can be derived and tested. Mixing-induced $CP$ asymmetries for many of the penguin-dominated decays are predicted to be very small in the standard model. They are sensitive to new physics and offer rich possibilities of new discoveries. Measurements of direct $CP$-violating asymmetries can be used to discriminate QCDF from other competing approaches such as pQCD and soft-collinear effective theory.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/7e5ea6e5b32581dbce7ccab7a54e4c1b7a13bb7d

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

  1. T. Blake
  2. Simone Bifani
  3. A. Vidal
  4. Vladimir Vava Gligorov
  5. U. Egede
  6. N. Serra
  7. E. Graverini
  8. P. Robbe

Citations in the corpus