Resolution to the B{yields}{pi}K puzzle
Abstract
We calculate the important nexttoleadingorder contributions to the B{yields}{pi}K, {pi}{pi} decays from the vertex corrections, the quark loops, and the magnetic penguins in the perturbative QCD approach. It is found that the latter two reduce the leadingorder penguin amplitudes by about 10% and modify only the B{yields}{pi}K branching ratios. The main effect of the vertex corrections is to increase the small colorsuppressed tree amplitude by a factor of 3, which then resolves the large difference between the direct CP asymmetries of the B{sup 0}{yields}{pi}{sup {+}}K{sup {+}} and B{sup {+}}{yields}{pi}{sup 0}K{sup {+}} modes. The puzzle from the large B{sup 0}{yields}{pi}{sup 0}{pi}{sup 0} branching ratio still remains.
 Authors:
 Institute of Physics, Academia Sinica, Taipei, Taiwan 115 (China) and Department of Physics, National ChengKung University, Tainan, Taiwan 701 (China)
 Department of Physics, Tohoku University, Sendai 9808578 (Japan)
 Department of Physics, Nagoya University, Nagoya 4648602 (Japan)
 Publication Date:
 OSTI Identifier:
 20774425
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physical Review. D, Particles Fields; Journal Volume: 72; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevD.72.114005; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AMPLITUDES; ASYMMETRY; B MESONS; BRANCHING RATIO; COLOR MODEL; CORRECTIONS; CP INVARIANCE; FEYNMAN DIAGRAM; HADRONIC PARTICLE DECAY; KAONS MINUS; KAONS PLUS; PIONS NEUTRAL; QUANTUM CHROMODYNAMICS; QUARKS; RESOLUTION
Citation Formats
Li Hsiangnan, Mishima, Satoshi, and Sanda, A.I. Resolution to the B{yields}{pi}K puzzle. United States: N. p., 2005.
Web. doi:10.1103/PhysRevD.72.114005.
Li Hsiangnan, Mishima, Satoshi, & Sanda, A.I. Resolution to the B{yields}{pi}K puzzle. United States. doi:10.1103/PhysRevD.72.114005.
Li Hsiangnan, Mishima, Satoshi, and Sanda, A.I. Thu .
"Resolution to the B{yields}{pi}K puzzle". United States.
doi:10.1103/PhysRevD.72.114005.
@article{osti_20774425,
title = {Resolution to the B{yields}{pi}K puzzle},
author = {Li Hsiangnan and Mishima, Satoshi and Sanda, A.I.},
abstractNote = {We calculate the important nexttoleadingorder contributions to the B{yields}{pi}K, {pi}{pi} decays from the vertex corrections, the quark loops, and the magnetic penguins in the perturbative QCD approach. It is found that the latter two reduce the leadingorder penguin amplitudes by about 10% and modify only the B{yields}{pi}K branching ratios. The main effect of the vertex corrections is to increase the small colorsuppressed tree amplitude by a factor of 3, which then resolves the large difference between the direct CP asymmetries of the B{sup 0}{yields}{pi}{sup {+}}K{sup {+}} and B{sup {+}}{yields}{pi}{sup 0}K{sup {+}} modes. The puzzle from the large B{sup 0}{yields}{pi}{sup 0}{pi}{sup 0} branching ratio still remains.},
doi = {10.1103/PhysRevD.72.114005},
journal = {Physical Review. D, Particles Fields},
number = 11,
volume = 72,
place = {United States},
year = {Thu Dec 01 00:00:00 EST 2005},
month = {Thu Dec 01 00:00:00 EST 2005}
}

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Measurements of the branching fractions of B{sup 0}{yields}K*{sup 0}K{sup +}K{sup }, B{sup 0}{yields}K*{sup 0}{pi}{sup +}K{sup }, B{sup 0}{yields}K*{sup 0}K{sup +}{pi}{sup }, and B{sup 0}{yields}K*{sup 0}{pi}{sup +}{pi}{sup }
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