Showing papers by "Dongliang Zhang published in 2008"
TL;DR: In this paper, a measurement of the muon charge asymmetry from W boson decays using 0.3 fb(-1) of data collected at root s = 1.96 GeV between 2002 and 2004 with the D0 detector at the Fermilab Tevatron (p) over bar Collider.
Abstract: We present a measurement of the muon charge asymmetry from W boson decays using 0.3 fb(-1) of data collected at root s =1.96 GeV between 2002 and 2004 with the D0 detector at the Fermilab Tevatron (p) over bar Collider. We compare our findings with expectations from next-to-leading-order calculations performed using the CTEQ6.1M and MRST04 NLO parton distribution functions. Our findings can be used to constrain future parton distribution function fits.
81 citations
TL;DR: In this article, a search for the pair production of the lightest supersymmetric partner of the top quark, t ˜ 1, using a data set corresponding to an integrated luminosity of 1 fb −1 collected by the DO detector at a p p ¯ center-of-mass energy of 1.96 TeV at the Fermilab Tevatron collider was performed in the electron plus muon and dielectron final states.
37 citations
TL;DR: In this paper, the authors present a study of events with Z bosons and jets produced at the Fermilab Tevatron Collider in ppbar collisions at a center of mass energy of 1.96 TeV.
35 citations
24 Jan 2008
TL;DR: In this paper, the search for pair production of the lightest supersymmetric partner of the top quark decaying into $b \ell \tilde{
u} was performed in the [$M(\tilde{t}_1),M(Tilde{nu})$] plane excluded at 95% C.L.
Abstract: Data collected by the D0 detector at a p-pbar center-of-mass energy of 1.96 TeV at the Fermilab Tevatron Collider have been used to search for pair production of the lightest supersymmetric partner of the top quark decaying into $b \ell \tilde{
u}$. The search is performed in the $\ell\ell' = e\mu$ and $\mu \mu$ final states. No evidence for this process has been found in data samples of approximately 400 pb^-1. The domain in the [$M(\tilde{t}_1),M(\tilde{
u})$] plane excluded at the 95% C.L. is substantially extended by this search.
26 citations
TL;DR: The study of the flavor-changing-neutral-current process c-->u micro(+) micro(-) using 1.3 fb(-1) of pp[over ] collisions at square root s = 1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider sees clear indications of the charged-current mediated D(s)(+) and D(+)-->phipi(+) -->micro(+)micro(-)pi(-) final states
Abstract: We study the flavor-changing-neutral-current process c -> u mu(+)mu(-) using 1.3 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider. We see clear indications of the charged-current mediated D-s(+) and D+->phi pi(+)->mu(+)mu(-)pi(+) final states with significance greater than 4 standard deviations above background for the D+ state. We search for the continuum neutral-current decay of D+->pi(+)mu(+)mu(-) in the dimuon invariant mass spectrum away from the phi resonance. We see no evidence of signal above background and set a limit of B(D+->pi(+)mu(+)mu(-)) u mu(+)mu(-) transition.
25 citations
TL;DR: In this paper, the isolated photon cross section in p(p)over-bar collisions at root s = 1.96 TeV (vol 639, pg 151, 2006).
10 citations