TY - JOUR
T1 - Penguin decays of B mesons
AU - Lingel, Karen
AU - Skwarnicki, Tomasz
AU - Smith, James G.
PY - 1998
Y1 - 1998
N2 - Penguin, or loop, decays of B mesons induce effective flavor-changing neutral currents, which are forbidden at tree level in the standard model. These decays give special insight into the CKM matrix and are sensitive to non-standard-model effects. In this review, we give a historical and theoretical introduction to penguins and a description of the various types of penguin processes: electromagnetic, electroweak, and gluonic. We review the experimental searches for penguin decays, including the measurements of the electromagnetic penguins b → sγ and B → K*γ and gluonic penguins B → Kπ, B+ → ωK+ and B → η′K, and their implications for the standard model and new physics. We conclude by exploring the future prospects for penguin physics.
AB - Penguin, or loop, decays of B mesons induce effective flavor-changing neutral currents, which are forbidden at tree level in the standard model. These decays give special insight into the CKM matrix and are sensitive to non-standard-model effects. In this review, we give a historical and theoretical introduction to penguins and a description of the various types of penguin processes: electromagnetic, electroweak, and gluonic. We review the experimental searches for penguin decays, including the measurements of the electromagnetic penguins b → sγ and B → K*γ and gluonic penguins B → Kπ, B+ → ωK+ and B → η′K, and their implications for the standard model and new physics. We conclude by exploring the future prospects for penguin physics.
KW - CP violation
KW - Charmless
KW - Loop
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U2 - 10.1146/annurev.nucl.48.1.253
DO - 10.1146/annurev.nucl.48.1.253
M3 - Review article
AN - SCOPUS:0032218170
SN - 0163-8998
VL - 48
SP - 253
EP - 306
JO - Annual Review of Nuclear and Particle Science
JF - Annual Review of Nuclear and Particle Science
IS - 1
ER -