Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

[ital K][sub [ital L]][r arrow][mu][sup [plus minus]][ital e[minus plus]][nu][bar [nu]] as a background to [ital K][sub [ital L]][r arrow][mu][sup [plus minus]][ital e[minus plus]]

Journal Article · · Physical Review, D (Particles Fields); (United States)
 [1];  [2]
  1. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
  2. Theoretical Physics, Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
+ Show Author Affiliations

We consider the process [ital K][sub [ital L]][r arrow][mu][sup [plus minus]][ital e[minus plus]][nu][bar [nu]] at next to leading order in chiral perturbation theory. This process occurs in the standard model at second order in the weak interaction, and constitutes a potential background in searches for new physics through the modes [ital K][sub [ital L]][r arrow][mu][sup [plus minus]][ital e[minus plus]]. We find that the same cut, [ital M][sub [mu][ital e]][gt]489 MeV, used to remove the sequential decays [ital K][sub [ital l]3][r arrow][pi][sub [ital l]2] pushes the [ital B]([ital K][sub [ital L]][r arrow][mu][sup [plus minus]][ital e[minus plus]][nu][bar [nu]]) to the 10[sup [minus]23] level, effectively removing it as a background.

DOE Contract Number:
AC02-76CH00016
OSTI ID:
6522903
Journal Information:
Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 48:1; ISSN PRVDAQ; ISSN 0556-2821
Country of Publication:
United States
Language:
English

Similar Records

[ital K][sub [ital L][ital e]5] decay as a background in the search for [ital K][sub [ital L]][r arrow][pi][sup 0][mu][sup [plus minus]][ital e][sup [minus plus]]
Journal Article · Fri Mar 31 23:00:00 EST 1995 · Physical Review, D (Particles Fields); (United States) · OSTI ID:6587526
Experimental study of the rare decays [ital K][sub [ital L]][sup 0][r arrow][mu][ital e], [ital K][sub [ital L]][sup 0][r arrow][ital ee], [ital K][sub [ital L]][sup 0][r arrow][mu][mu], and [ital K][sub [ital L]][sup 0][r arrow][ital eeee]
Journal Article · Tue Feb 28 23:00:00 EST 1995 · Physical Review, D (Particles Fields); (United States) · OSTI ID:6579763
Study of the decay [ital K][sub [ital L]][r arrow][pi][sup [plus minus]][pi][sup 0][ital e[minus plus]][bar [nu]]([nu])
Journal Article · Sun Mar 14 23:00:00 EST 1993 · Physical Review Letters; (United States) · OSTI ID:6654918

Related Subjects

662120 -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662350* -- Decays of Mesons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTILEPTONS
ANTIMATTER
ANTINEUTRINOS
ANTIPARTICLES
BOSONS
CHIRAL SYMMETRY
CONSERVATION LAWS
DECAY
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
GAUGE INVARIANCE
HADRONS
INVARIANCE PRINCIPLES
KAONS
KAONS NEUTRAL
KAONS NEUTRAL LONG-LIVED
LEPTON NUMBER
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATTER
MESONS
MUONS
NEUTRINOS
PARTICLE DECAY
PARTICLE MODELS
PERTURBATION THEORY
PIONS
PSEUDOSCALAR MESONS
STANDARD MODEL
STRANGE MESONS
STRANGE PARTICLES
SYMMETRY
UNIFIED GAUGE MODELS
WEAK HADRONIC DECAY
WEAK PARTICLE DECAY