Conveners
Electroweak Physics
- Doreen Wackeroth (SUNY Buffalo)
- Sridhara Dasu (University of Wisconsin)
Electroweak Physics
- Doreen Wackeroth (SUNY at Buffalo)
- Sridhara Dasu (University of Wisconsin)
Electroweak Physics
- Doreen Wackeroth (SUNY at Buffalo)
- Sridhara Dasu (University of Wisconsin)
Electroweak Physics
- Sridhara Dasu (University of Wisconsin)
- Doreen Wackeroth (SUNY at Buffalo)
Frank Petriello
(Northwestern University)
09/08/2011, 14:00
Electroweak Physics
Parallel contribution
Experiments at the Tevatron and the LHC have recently studied the electroweak gauge sector of the Standard Model with impressive breadth and precision. In this talk we discuss several new experimental results, and the theoretical progress they have spurred.
Joseph Anthony Gartner
(University of Florida)
09/08/2011, 14:40
Electroweak Physics
Parallel contribution
In 2010 the CMS experiment collected about 35 pb-1 of data during the first physics run of the LHC accelerator. We present the first measurements of the differential cross section as a function of boson rapidity and transverse momentum for Z bosons produced at 7 TeV and decaying to pairs of electrons and muons. The data are unfolded and corrected for efficiencies, allowing a direct comparison...
Stoyan Emilov Stoynev
(Department of Physics and Astronomy-Northwesten University)
09/08/2011, 15:00
Electroweak Physics
Parallel contribution
We present a measurement of the Drell-Yan differential cross section in pp collisions as a function of the dilepton invariant mass (dsigma/dm). The data sample was collected by the CMS detector at the LHC operating at a center-of-mass energy of 7 TeV during 2010 and 2011. The results are compared to predictions of the Standard Model.
Jonathan Anderson
(Universitaet Zuerich)
09/08/2011, 15:20
Electroweak Physics
Parallel contribution
Results are presented of W and Z boson production in pp collisions at $\sqrt(s)=7$ TeV
by the LHCb experiment.
These studies are of particular interest due to LHCb's unique forward acceptance in pseudo-rapidity
($\eta$) of 2 $< \eta <$ 5. The results may either be interpreted as a test of Standard Model
predictions,
or may be used to constrain better parton density functions in this...
Jiyeon Han
(University of Rochester)
09/08/2011, 16:00
Electroweak Physics
Parallel contribution
We report on the first measurement of the angular distribution of final state lepton and also the forward and backward asymmetry (Afb) which is sensitive to Weinberg angle in $p\bar{p} \to \gamma^{*}/Z \to \ell^{+}\ell^{-} + X$ events produced at $\sqrt{s}=1.96 TeV$. The data sample collected by the CDF II detector.
The angular distributions are studied as a function of the transverse...
Rafael Lopes de Sa
(Stony Brook University)
09/08/2011, 16:20
Electroweak Physics
Parallel contribution
We use up to 7.3 fb-1 of ppbar collisions collected with the D0 detector study different differential distributions for Z/gamma* produced in ppbar collisions at the Tevatron collider. In one study we investigate the transverse momentum distribution of the Z/gamma* boson by using a novel observable that has reduced sensitivity to the effects of experimental resolution and efficiency, allowing...
Ji Yeon Han
(University of Rochester)
09/08/2011, 17:00
Electroweak Physics
Parallel contribution
We report the measurements of the rates and asymmetries of inclusive and differential production of W and Z vector bosons in pp collisions at 7 TeV c.m. energy at the CMS detector.
Kira Suzanne Grogg
(Department of Physics-University of Wisconsin)
09/08/2011, 17:20
Electroweak Physics
Parallel contribution
We present a study of jets produced in association with vector bosons production in pp collisions at center-of-mass energy of 7 TeV using the full CMS 2010 data set, corresponding to 36 pb−1. The transverse energy distribution of the reconstructed leading jets is measured and compared to theoretical expectations. The jet multiplicity distributions are efficiency corrected and unfolded . The...
Mr
Andrew Robert Meade
(University of Massachusetts)
09/08/2011, 17:40
Electroweak Physics
Parallel contribution
The measurement of hadronic activity recoiling against W and Z vector bosons provides an important test of perturbative QCD, as well as a method of searching for new physics in a model independent fashion. We present a study of the cross-section ratio for the production of W and Z gauge bosons in association with exactly one jet R-jets= (W+1jet)/(Z+1jet), in pp collisions at sqrt(s) = 7 TeV....
Prof.
Nikolaos Kidonakis
(Kennesaw State University)
10/08/2011, 14:00
Electroweak Physics
Parallel contribution
I present new results for the complete two-loop corrections in the
soft approximation for W and Z boson production at large transverse momentum. Analytical expressions for the NNLO approximate transverse momentum distributions are derived. Results for W boson production at Tevatron and LHC energies are presented.
Dr
Jianbei Liu
(University of Michigan)
10/08/2011, 14:30
Electroweak Physics
Parallel contribution
I present a measurement of the Z/gamma* transverse momentum (pTZ) distribution in proton-proton collisions at √s=7TeV using Z/gamma*->e+e− and Z/gamma*->μ+μ− decays in data samples corresponding to integrated luminosities of 35 pb^−1 and 40 pb^−1 respectively, taken in 2010 with the ATLAS detector. The normalized pTZ distributions are measured separately for electron and muon decay channels as...
Daniel Boline
10/08/2011, 14:50
Electroweak Physics
Parallel contribution
We present a precise measurement of W boson mass measurement in electron decay
channel using data collected by the D0 detector at the Fermilab Tevatron
collider. A binned likelihood fit method is used to extract the mass
information from the transverse mass, the electron transverse momentum and
missing transverse energy distributions. We also present a precise direct
measurement of W...
Prof.
Al Goshaw
(Duke University)
10/08/2011, 15:10
Electroweak Physics
Parallel contribution
We have used the ATLAS detector to study W and Z bosons produced with high energy photons in pp collisions at sqrt(s) = 7 TeV. We select Wgamma and Zgamma events from the interactions p+p -> l + nu + gamma + X and p+p -> l + l + gamma + X where the lepton is a muon or electron. The photon is required to be isolated and separated from the lepton(s) by dR(l-gamma)>0.7. The measurement is based...
Prof.
Scott Yost
(The Citadel)
10/08/2011, 15:30
Electroweak Physics
Parallel contribution
Higher-order diagrams required for radiative corrections to mixed electroweak and QCD processes at the LHC and anticipated future colliders will require numerically stable representations of the associated Feynman diagrams. The hypergeometric representation supplies an analytic framework that is useful for deriving such stable representations. We discuss the reduction of Feynman diagrams to...
Dr
Haijun Yang
(University of Michigan)
12/08/2011, 10:30
Electroweak Physics
Parallel contribution
I will report on measurement of the WW production cross section
and associated limits on anomalous couplings using LHC proton-proton
collision data collected by the ATLAS Detector at 7 TeV center-of-mass
energy. The production cross section was measured in the WW leptonic
decay channels. Precise measurement of the triple-gauge-boson couplings
is a stringent test of the Standard Model...
Federico Sforza
(INFN Pisa)
12/08/2011, 10:50
Electroweak Physics
Parallel contribution
We present a search for WW/WZ diboson production in the lepton plus neutrino plus heavy flavor dijet channel at the CDFII experiment. After successful observation of WW/WZ in the inclusive lepton plus neutrino plus dijet channel, we now focus on the identification of this process in cases where either a W or Z boson decays into one or more heavy flavor quarks. The search uses events with a...
Mr
Yusheng Wu
(Univ. of Michigan / Univ. of Sci. & Tech. of China)
12/08/2011, 11:10
Electroweak Physics
Parallel contribution
We will report on a recent measurement of WZ production cross section and limits on anomalous WWZ couplings using LHC proton-proton collision data collected by the ATLAS Detector at 7 TeV center-of-mass energy in 2011. The measurement is carried out on the WZ leptonic decay channels yielding three isolated high-pT leptons and large transverse momentum imbalance in the events. The background...
Michael Cooke
(Fermilab)
12/08/2011, 11:30
Electroweak Physics
Parallel contribution
We present measurements of the production cross sections for W/Z+gamma and W/Z+Z boson pairs using up to 8.6 fb-1 of ppbar collisions recorded with the D0 detector at the Fermilab Tevatron collider. In addition to comparing the total cross section measurements with the QCD predictions, we investigate differential distributions and set limits on possible anomalous couplings in the triple gauge...
Kalanand Mishra
(Fermi National Accelerator Lab. (Fermilab))
12/08/2011, 11:50
Electroweak Physics
Parallel contribution
We report on the study the diboson production (WW, WZ, ZZ) at CMS based on the data collected during the 2010+2011 running of the LHC.
Shih-Chieh Hsu
(Physics Division-Lawrence Berkeley National Lab. (LBNL))
12/08/2011, 12:10
Electroweak Physics
Parallel contribution
A measurement of the ZZ production cross section in proton-proton collisions at sqrts=7TeV using data collected by the ATLAS experiment at the LHC is presented. In a data sample corresponding to an integrated luminosity of 1.02 ifb, 12 candidate events of purely leptonically decaying Z bosons with electrons and/or muons in the final state were observed. The expected background contribution is...
