Measurement of the top quark mass in the lepton+jets channel using the ideogram method

This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.75.092001

Properties of L=1 B(1) and B∗(2) Mesons

This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.99.172001.This Letter presents the first strong evidence for the resolution of the excited B mesons B(1) and B∗(2) as two separate states in fully reconstructed decays to B(+)(*)π−. The mass of B(1) is measured to be 5720.6±2.4±1.4  MeV/c(2) and the mass difference ΔM between B∗(2) and B(1) is 26.2±3.1±0.9  MeV/c(2), giving the mass of the B∗(2) as 5746.8±2.4±1.7  MeV/c(2). The production rate for B(1) and B∗(2) mesons is determined to be a fraction (13.9±1.9±3.2)% of the production rate of the B(+) meson

Lifetime Difference and CP-Violating Phase in the B(0)(s)System

This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.98.121801

Evidence for production of single top quarks

This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.78.012005

Search for Pair Production of Doubly Charged Higgs Bosons in the H(++)H(−−)→μ(+)μ(+)μ(−)μ(−) Final State

This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.101.071803.We report the results of a search for pair production of doubly charged Higgs bosons via pp-bar→H(++)H(−−)X→μ(+)μ(+)μ(−)μ(−)X at s√=1.96  TeV. We use a data set corresponding to an integrated luminosity of 1.1  fb(−1) collected from 2002 to 2006 by the D0 detector at the Fermilab Tevatron Collider. In the absence of an excess above the standard model background, lower mass limits of M(H(±±)(L))>150  GeV/c(2) and M(H(±±)(R))>127  GeV/c(2) at 95% C.L. are set, respectively, for left-handed and right-handed doubly charged Higgs bosons assuming a 100% branching ratio into muons

Study of the Decay B(0)(s)→D(*)(s)D(*)(s)

This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.99.241801

Experimental Discrimination between Charge 2e/3 Top Quark and Charge 4e/3 Exotic Quark Production Scenarios

This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.98.041801.We present the first experimental discrimination between the 2e/3 and 4e/3 top quark electric charge scenarios, using top quark pairs (tt-bar) produced in pp-bar collisions at s√=1.96  TeV by the Fermilab Tevatron Collider. We use 370  pb(−1) of data collected by the D0 experiment and select events with at least one high transverse momentum electron or muon, high transverse energy imbalance, and four or more jets. We discriminate between b- and b-bar-quark jets by using the charge and momenta of tracks within the jet cones. The data are consistent with the expected electric charge, |q|=2e/3. We exclude, at the 92% C.L., that the sample is solely due to the production of exotic quark pairs QQ-overbar with |q|=4e/3. We place an upper limit on the fraction of QQ-overbar pairs ρ<0.80 at the 90% C.L

Search for Large Extra Dimensions via Single Photon plus Missing Energy Final States at s√=1.96 TeV

This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.101.011601.We report on a search for large extra dimensions in a data sample of approximately 1  fb(−1) of pp-bar collisions at s√=1.96  TeV. We investigate Kaluza-Klein graviton production with a photon and missing transverse energy in the final state. At the 95% C.L. we set limits on the fundamental mass scale M(D) from 884 to 778 GeV for two to eight extra dimensions

Search for Decay of a Fermiophobic Higgs Boson h(f)→γγ with the D0 Detector at s√=1.96 TeV

This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.101.051801.We report the results of a search for a narrow resonance decaying into two photons in 1.1  fb(−1) of data collected by the D0 experiment at the Fermilab Tevatron Collider during the period 2002–2006. We find no evidence for such a resonance and set a lower limit on the mass of a fermiophobic Higgs boson of m(hf)>100  GeV at the 95% C.L. This exclusion limit exceeds those obtained in previous searches at the Fermilab Tevatron and covers a significant region of the parameter space B(hf→γγ) vs mhf which was not accessible at the CERN Large Electron-Positron Collider

Search for W′ Boson Resonances Decaying to a Top Quark and a Bottom Quark

This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.100.211803.We search for the production of a heavy W′ gauge boson that decays to third generation quarks in 0.9  fb(−1) of pp-bar collisions at s√=1.96  TeV, collected with the D0 detector at the Fermilab Tevatron collider. We find no significant excess in the final-state invariant mass distribution and set upper limits on the production cross section times branching fraction. For a left-handed W′ boson with SM couplings, we set a lower mass limit of 731 GeV. For right-handed W′ bosons, we set lower mass limits of 739 GeV if the W′ boson decays to both leptons and quarks and 768 GeV if the W′ boson decays only to quarks. We also set limits on the coupling of the W′ boson to fermions as a function of its mass