Conveners
Electroweak +
- Matthew Baumgart (Carnegie Mellon University)
Darin Carl Baumgartel
(Northeastern University (US), The CMS Collaboration)
06/05/2014, 14:00
Measurements 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...
Christian Gutschow
(University College London (UK))
06/05/2014, 14:30
Vector 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...
Haolu Feng
(University of Michigan (US))
06/05/2014, 14:45
ATLAS 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...
Aditya Yechan Gunja
(Wayne State University)
06/05/2014, 15:15
We 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...
Prof.
Wai-Yee Keung
(University of Illinois at Chicago)
06/05/2014, 15:30
Goldstone 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...
Kunal Kumar
(Carleton University)
06/05/2014, 15:45
Unitarity 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...