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Title: Measurement of the K{sup +{yields}{pi}0{mu}+{nu}}{sub {mu}{gamma}}branching ratio

Abstract

A measurement of the decay K{sup +{yields}{pi}0{mu}+{nu}}{sub {mu}{gamma}}has been performed with the E787 detector at Brookhaven National Laboratory. Forty events were observed in the signal region with the background expectation of (16.5{+-}2.7) events. The branching ratio was measured to be (1.58{+-}0.46(stat.){+-}0.08(syst.))x10{sup -5} in the kinematic region E{sub {gamma}>}30 MeV and {theta}{sub {mu}{gamma}>}20 deg., where E{sub {gamma}}is the energy of the emitted photon and {theta}{sub {mu}{gamma}}is the angle between the muon and the photon in the K{sup +} rest frame. The results were consistent with theoretical predictions.

Authors:
; ; ; ; ; ; ; ; ; ; ; ;  [1]; ; ; ; ;  [2]; ;  [3]
  1. Brookhaven National Laboratory, Upton, New York 11973 (United States)
  2. Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544 (United States)
  3. Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1 (Canada)
Publication Date:
OSTI Identifier:
21409912
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 81; Journal Issue: 9; Other Information: DOI: 10.1103/PhysRevD.81.092001; (c) 2010 The American Physical Society; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BNL; BRANCHING RATIO; FORECASTING; GAMMA RADIATION; KAONS PLUS; MEV RANGE 10-100; MUON NEUTRINOS; MUONS PLUS; PHOTONS; PIONS NEUTRAL; RADIATIVE DECAY; ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BOSONS; DECAY; DIMENSIONLESS NUMBERS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; HADRONS; IONIZING RADIATIONS; KAONS; LEPTONS; MASSLESS PARTICLES; MATTER; MESONS; MEV RANGE; MUONS; NATIONAL ORGANIZATIONS; NEUTRINOS; PARTICLE DECAY; PIONS; PSEUDOSCALAR MESONS; RADIATIONS; STRANGE MESONS; STRANGE PARTICLES; US AEC; US DOE; US ERDA; US ORGANIZATIONS

Citation Formats

Adler, S, Chiang, I-H, Diwan, M V, Frank, J S, Haggerty, J S, Jaffe, D E, Jain, V, Kettell, S H, Li, K K, Littenberg, L S, Ng, C, Strand, R C, Witzig, C, Bazarko, A O, Ito, M M, Meyers, P D, Shoemaker, F C, Stone, J R, Bergbusch, P C, and Bryman, D A. Measurement of the K{sup +{yields}{pi}0{mu}+{nu}}{sub {mu}{gamma}}branching ratio. United States: N. p., 2010. Web. doi:10.1103/PHYSREVD.81.092001.
Adler, S, Chiang, I-H, Diwan, M V, Frank, J S, Haggerty, J S, Jaffe, D E, Jain, V, Kettell, S H, Li, K K, Littenberg, L S, Ng, C, Strand, R C, Witzig, C, Bazarko, A O, Ito, M M, Meyers, P D, Shoemaker, F C, Stone, J R, Bergbusch, P C, & Bryman, D A. Measurement of the K{sup +{yields}{pi}0{mu}+{nu}}{sub {mu}{gamma}}branching ratio. United States. https://doi.org/10.1103/PHYSREVD.81.092001
Adler, S, Chiang, I-H, Diwan, M V, Frank, J S, Haggerty, J S, Jaffe, D E, Jain, V, Kettell, S H, Li, K K, Littenberg, L S, Ng, C, Strand, R C, Witzig, C, Bazarko, A O, Ito, M M, Meyers, P D, Shoemaker, F C, Stone, J R, Bergbusch, P C, and Bryman, D A. 2010. "Measurement of the K{sup +{yields}{pi}0{mu}+{nu}}{sub {mu}{gamma}}branching ratio". United States. https://doi.org/10.1103/PHYSREVD.81.092001.
@article{osti_21409912,
title = {Measurement of the K{sup +{yields}{pi}0{mu}+{nu}}{sub {mu}{gamma}}branching ratio},
author = {Adler, S and Chiang, I-H and Diwan, M V and Frank, J S and Haggerty, J S and Jaffe, D E and Jain, V and Kettell, S H and Li, K K and Littenberg, L S and Ng, C and Strand, R C and Witzig, C and Bazarko, A O and Ito, M M and Meyers, P D and Shoemaker, F C and Stone, J R and Bergbusch, P C and Bryman, D A},
abstractNote = {A measurement of the decay K{sup +{yields}{pi}0{mu}+{nu}}{sub {mu}{gamma}}has been performed with the E787 detector at Brookhaven National Laboratory. Forty events were observed in the signal region with the background expectation of (16.5{+-}2.7) events. The branching ratio was measured to be (1.58{+-}0.46(stat.){+-}0.08(syst.))x10{sup -5} in the kinematic region E{sub {gamma}>}30 MeV and {theta}{sub {mu}{gamma}>}20 deg., where E{sub {gamma}}is the energy of the emitted photon and {theta}{sub {mu}{gamma}}is the angle between the muon and the photon in the K{sup +} rest frame. The results were consistent with theoretical predictions.},
doi = {10.1103/PHYSREVD.81.092001},
url = {https://www.osti.gov/biblio/21409912}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 9,
volume = 81,
place = {United States},
year = {Sat May 01 00:00:00 EDT 2010},
month = {Sat May 01 00:00:00 EDT 2010}
}