Upper limits on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>D</mml:mi></mml:mrow><mml:mrow><mml:mo>±</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mo>±</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>decays to two leptons plus<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>±</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>or<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mo>±</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>

199015 citationsJournal Articlegreen Open Access

Authors

A. J. Weir · California Institute of Technology

S. R. Klein · Stanford Synchrotron Radiation Lightsource

G. S. Abrams · University of California, Berkeley

C. Adolphsen · University of California, Santa Cruz

C. Akerlof · University of Michigan–Ann Arbor

J. Alexander · SLAC National Accelerator Laboratory

M. Alvarez

Abstract

Data taken by the Mark II detector at the SLAC ${e}^{+}{e}^{\ensuremath{-}}$ storage ring PEP was used to search for exclusive decays of ${D}^{\ifmmode\pm\else\textpm\fi{}}$ and ${B}^{\ifmmode\pm\else\textpm\fi{}}$ mesons into two charged leptons plus a charged pion or kaon. All possible charge and lepton combinations consistent with charge conservation were considered and no evidence for any signals was found. We obtain upper limits for the various branching ratios ranging from 2.5\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}3}$ to 9.2\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}3}$, at a 90% confidence level. Some of these limits can be used to constrain leptoquark masses in various models.

Topics & Keywords

Particle physics theoretical and experimental studies Quantum Chromodynamics and Particle Interactions High-Energy Particle Collisions Research

UN Sustainable Development Goals

Life in Land

Publication Details

Published in: Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields

Volume 41, Issue 5, pp. 1384-1388

DOI: 10.1103/physrevd.41.1384

Field-Weighted Citation Impact: 0.56

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Authors

Abstract

Topics & Keywords

UN Sustainable Development Goals

Publication Details