Search for the flavor-changing neutral current decay <em>D⁰→μ⁺μ^-</em> in <em>pp</em> collisions at s√=1.96TeV

For the detector charge asymmetry measurement, we compare the numbers of reconstructed positive and negative tracks as a function of track p T in a high statistics data sample

The likelihood ratio distribution for signal (dashed line) from PYTHIA MC samples and background (solid line) from data sidebands in the U-U channel. Distributions of the

Here, S F is the ac- cepted fraction of signal events, in this case taken from a Monte Carlo sample, and the background B av is the number of selected B c candidates within the

To maximize acceptance and efficiency for events containing four elec- trons, we select three other electron candidates using opti- mized identification and kinematic criteria in

We begin the signal reconstruction by requiring the candidate muon, pion, and kaon tracks to satisfy COT fiducial and quality selection criteria, which include re- quirements on

Department of Energy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science and Technology of Japan;

number of signal events N sig is determined by scaling the MC yields of the rare decay modes to the yields of the normalization channels in the data, and correcting by the

Department of En- ergy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science and Technology of