{ital K}{r_arrow}{pi}{nu}{bar {nu}} and high precision determinations of the CKM matrix

Journal Article · Sun Dec 01 04:00:00 EST 1996 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.54.6782· OSTI ID:397751

Buchalla, G ^[1]; Buras, A J ^[2]

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1. Theoretical Physics Department, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510 (United States)
2. Physik Department, Technische Universitaet Muenchen, D-85748 Garching (Germany)

We investigate the future determination of the CKM matrix using theoretically clean quantities, such as {ital B}({ital K}{sup +}{r_arrow}{pi}{sup +}{nu}{bar {nu}}), {ital B}({ital K}{sub {ital L}}{r_arrow}{pi}{sup 0}{nu}{bar {nu}}) or sin2{beta}, sin2{alpha} as extracted from {ital CP} violation studies in {ital B} physics. The theoretical status of {ital K}{r_arrow}{pi}{nu}{bar {nu}} is briefly reviewed and their phenomenological potential is compared with that of {ital CP} asymmetries in {ital B} decays. We stress the unique opportunities provided by measuring the {ital CP}-violating rare decay {ital K}{sub {ital L}}{r_arrow}{pi}{sup 0}{nu}{bar {nu}}. It is pointed out that this mode is likely to offer the most precise determination of Im{ital V}{sub {ital ts}}{sup {asterisk}}{ital V}{sub {ital td}} and the Jarlskog parameter {ital J}{sub {ital CP}}, the invariant measure of {ital CP} violation in the standard model. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Fermi National Accelerator Laboratory
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 397751
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 11 Vol. 54; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANTINEUTRINOS
CP INVARIANCE
KAONS
KAONS NEUTRAL LONG-LIVED
KAONS PLUS
KOBAYASHI-MASKAWA MATRIX
NEUTRINOS
PIONS
SEMILEPTONIC DECAY
STANDARD MODEL
VIOLATIONS