Precise K * ( 892 ) → K π branching fractions
Year: 2025
Type: article
Abstract: Although discovered more than sixty years ago, direct measurement of the K * ( 892 ) → K π branching fractions is a formidable challenge that has not been attempted. Typically they are assumed to obey the isospin limit in hundreds of particle data measurements. We show that an abundance of recent amplitude analyses and other data, however, enables recovery of the ratios B ( K * + → K + π 0 ) / B ( K * + → K S 0 π + ) and 4 B ( K * 0 → K S 0 π 0 ) / B ( K * 0 → K + π − ) at ∼ 5 % precision.
DOI: 10.1103/s87z-1978
Authors: Vladimir V. Gligorov, Dean J. Robinson
Institutions: Centre National de la Recherche Scientifique, Sorbonne Université, Sorbonne Paris Cité, Laboratoire de Physique Nucléaire et de Hautes Énergies, Institut National de Physique Nucléaire et de Physique des Particules, Lawrence Berkeley National Laboratory, University of California, Berkeley
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4417212345