Conveners
Electroweak +
- Matthew Baumgart (Carnegie Mellon University)
-
Darin Carl Baumgartel (Northeastern University (US), The CMS Collaboration)06/05/2014, 14:00Measurements are presented of the production of the W and Z boson in association with one or more jets, using 4.9-5.0/fb of CMS data collected at sqrt(s)=7TeV. Differential cross-section measurements are calculated as a function of several variables, including jet multiplicity, the transverse momentum and pseudorapidity of the jets, and the scalar sum of jet transverse momenta. Measurements of...Go to contribution page
-
Mr Bowen Wang (myself)06/05/2014, 14:15I discuss the $Z/\gamma^*$ gauge boson production in $pp$ and $p\bar{p}$ collisions with the focus on non-perturbative contributions to the transverse momentum distribution based on the Collins-Soper-Sterman (CSS) resummation formalism. The dependence of the CSS resumed cross section on resummation scales and other factors is estimated. I also present a study of $Z/\gamma^*$ production in...Go to contribution page
-
Christian Gutschow (University College London (UK))06/05/2014, 14:30Vector boson production in $pp$ collisions at 7 TeV has been extensively studied by ATLAS. Recent results include the measurement of Drell-Yan differential production cross section and of jets and heavy flavours production in association with vector bosons. The Drell-Yan cross-section measurements are compared to NNLO QCD predictions corrected for NLO EW effects calculated using various...Go to contribution page
-
Haolu Feng (University of Michigan (US))06/05/2014, 14:45ATLAS measurements of diboson production processes involving combinations of W/Z, vector boson scattering (VBS), as well as single Z->4l are summarized. Measurements using data at 7 TeV and new results at 8 TeV are presented. The measurements are performed using leptonic decay modes for di-boson production, including Z->nunu for ZZ with semileptonic channels. VBS measurement is performed...Go to contribution page
-
Mr David Clark (SMU)06/05/2014, 15:00High Energy proton-proton collisions at the LHC are capable of producing many electroweak bosons (W/Z) at high rapidity. Measurements of properties of these particles are essential standard candles used to calibrate detectors such as ATLAS. The collision of heavy nuclei can show significant modifications to the distribution of these bosons. We will present an analysis of electroweak boson...Go to contribution page
-
Aditya Yechan Gunja (Wayne State University)06/05/2014, 15:15We examine exclusive W decays, such as $W^{\pm} \rightarrow \pi^{\pm} + \gamma$. The mass of the W boson is predicted by the standard Weinberg-Salam model for weak interactions. Detection of its radiative decay along with the measurement of the photon energy can be used to obtain a precise determination of this mass. So a good theoretical calculation of these rare decay modes is significant...Go to contribution page
-
Prof. Wai-Yee Keung (University of Illinois at Chicago)06/05/2014, 15:30Goldstone bosons arising from the spontaneous breakdown of some global hidden symmetries can interact weakly in the early Universe and account for a fraction of the effective number of neutrino species $N_{eff}$, which has been reported persistently 1 $\sigma$ away from its expected value of three. In this work, we study in some details a number of experimental constraints on this interesting...Go to contribution page
-
Kunal Kumar (Carleton University)06/05/2014, 15:45Unitarity limits from $2 \rightarrow 2$ scattering processes constrain the $hVV$, $hhVV$, $h\bar{f}f$ couplings to deviate from the SM values by up to $\mathcal{O}(v^2/s)$, $\mathcal{O}(v^2/s)$ and $\mathcal{O}(v/\sqrt{s})$ respectively. These bounds are not always ``saturated" in NP models, for e.g. in Type-II 2HDM the decoupling of $hVV$ has a steeper power law behaviour of...Go to contribution page