Conveners
EWK and Higgs Sector: Higgs coupling
- Sally Dawson (BNL)
EWK and Higgs Sector: Higgs Properties - CP
- Marc Sher (William and Mary College)
EWK and Higgs Sector: Vector Boson Scattering
- Shih-Chieh Hsu (University of Washington, Seattle)
EWK and Higgs Sector: Higgs Properties - Mass and Lifetime
- Ian Lewis (SLAC)
EWK and Higgs Sector: Electroweak Measurement
- Sara Lynn Dawson (Brookhaven National Laboratory (US))
EWK and Higgs Sector: New Higgs Production
- Christopher Carl Neu (Department of Physics-University of Virginia-Unknown)
EWK and Higgs Sector: Flavor Violation Decay of Higgs
- Howard Haber (Santa Cruz Institute for Particle Physics (SCIPP))
EWK and Higgs Sector: Future Prospects
- Jim Brau (University of Oregon (US))
Tyler Corbett
(Stony Brook)
8/4/15, 2:00 PM
Electroweak and Higgs Theory
After the discovery of the Higgs at the LHC, and as the data continues to converge to the Standard Model predictions, it becomes important to try and classify possible small deviations from the expected behavior. A manner of doing so, consistent with the symmetries of the Standard Model, is the use of effective field theories. They are valid both for scenarios with new ultraviolet decoupling...
Fangzhou Zhang
(University of Wisconsin (US))
8/4/15, 2:30 PM
Electroweak and Higgs Experiment
This talk presents the combined measurement of the Higgs boson coupling strengths using the full Run I data sample recorded by the ATLAS detector. Results from the H->γγ, ZZ*, WW*, Zγ, ττ, bb and μμ decay modes are presented, as well as constraints on associated Higgs production with a top quark pair and on the off-shell coupling strengths of the Higgs boson. For all benchmark models...
Nan Lu
(University of Michigan (US))
8/4/15, 4:00 PM
Electroweak and Higgs Experiment
This talk will present studies of the spin, parity and tensor couplings of the Higgs boson in the H → ZZ* → 4l, H → WW* → eνµν and H → γγ decay processes at the LHC, based on 25 fb-1 of pp collision data collected by the ATLAS experiment at 7 TeV and 8 TeV. The Standard Model (SM) Higgs boson hypothesis, corresponding to the quantum numbers JP = 0+, is tested...
Heshy Roskes
(Johns Hopkins University (US))
8/4/15, 4:30 PM
Electroweak and Higgs Theory
In this talk we discuss the MC simulation (JHUGen) and analysis tools based on matrix element approach (MELA) to study the extent to which CP parity of a Higgs boson H(125), and more generally its anomalous couplings to gauge bosons and fermions, can be measured in Run2 of LHC. We consider several production processes, including Higgs boson production in gluon and weak boson fusion and...
Mr
Biswaranjan Das
(Indian Institute of Technology Guwahati, India)
8/4/15, 5:00 PM
Electroweak and Higgs Theory
The ATLAS and CMS collaborations independently discovered a
Higgs-like particle with mass $M_h \sim$ 125 GeV and properties
similar to that predicted by the Standard Model (SM) at the Large
Hadron Collider (LHC) in 2012. Although the measurements so far
indicate that the newly discovered particle is compatible with
the SM predictions, however due to some uncertainties in few of...
Yusheng Wu
(University of Michigan; Institute of Physics, Academia Sinica)
8/5/15, 2:00 PM
Electroweak and Higgs Experiment
This talk will briefly summarize some of the more recent electroweak measurements at ATLAS of diboson and triboson production. Measurements of these electroweak production rates are of great importance in testing the Standard Model at the energy frontier. A generic search for new physics phenomena is carried out by measuring the triple and quartic gauge boson couplings and comparing with the...
Joshua Milo Kunkle
(University of Maryland (US))
8/5/15, 2:30 PM
Electroweak and Higgs Experiment
Recent measurements of multiboson production from the CMS experiment will be presented, as well as limits on anomalous triple and quartic gauge couplings. Precision measurements of multiboson production allow a basic test of the Standard Model, where higher order QCD and electroweak corrections can be probed. In addition searches of physics beyond the Standard Model in multiboson final states...
Jacob Alexander Searcy
(University of Michigan (US))
8/5/15, 3:00 PM
Electroweak and Higgs Experiment
The unitarization of the longitudinal Vector Boson Scattering (VBS) cross section by the Higgs boson is a fundamental prediction of the Standard Model which has not been experimentally verified. In the first LHC run, ATLAS and CMS presented the first studies of VBS in events with two leptonically decaying same sign W bosons produced in association with two jets. This channel has the advantage...
Hongtao Yang
(University of Wisconsin (US))
8/5/15, 4:00 PM
Electroweak and Higgs Experiment
The mass of the Higgs boson is an important free parameter of the Standard Model (SM). Given the mass, all properties of the SM Higgs boson can be predicted. In this talk, I summarize the measurement of the Higgs boson mass based on the combined Run 1 datasets from the ATLAS and CMS experiments collected at √s = 7 TeV and 8 TeV at the LHC, using the high-resolution diphoton and four-lepton...
Christopher Blake Martin
(Johns Hopkins University (US))
8/5/15, 4:30 PM
Electroweak and Higgs Experiment
Constraints on the lifetime and quantum numbers of the recently discovered Higgs boson are obtained from $H\to4\ell$ events using the full dataset recorded by the CMS experiment during the LHC Run1. The measurement of the Higgs boson lifetime is derived from limits set on its flight distance within the CMS detector and a limit of the total width obtained from an off-shell production technique....
Marc Sher
(William and Mary College)
8/5/15, 5:00 PM
Electroweak and Higgs Theory
If the Standard Model (SM) is valid up to extremely high energy scales, then the Higgs potential becomes unstable at approximately 10^11 GeV. Calculations of the lifetime showed that it vastly exceeds the age of the Universe. However, these calculations are extremely sensitive to effects from Planck scale higher-dimensional operators and, without knowledge of these operators, firm conclusions...
Dr
Cong GENG
(USTC/University of Michigan)
8/6/15, 2:00 PM
Electroweak and Higgs Experiment
I report physics prospects of the ZZ production measurements with the ATLAS experiment using 10 fb-1 of 13-TeV proton-proton collision data to be collected in the LHC Run 2. First look at early Run 2 data, if available, will also be presented.
Hasan Ogul
(University of Iowa (US))
8/6/15, 2:30 PM
Electroweak and Higgs Experiment
Measurement of the Muon Charge Asymmetry for W Bosons Produced in Inclusive pp → W(μν) + X at √s = 8 TeV are presented. The data sample corresponds to an integrated luminosity of 18.8 inverse femtobarns recorded with the CMS detector at the LHC. With a sample of more than a hundred million W to mu nu events, the statistical precision is greatly improved in comparison to previous measurements....
Zack Sullivan
(Illinois Institute of Technology)
8/6/15, 2:50 PM
Electroweak and Higgs Theory
We reexamine the dominant contribution of parton distribution function
(PDF) uncertainties to the W mass measurement, and determine their
contribution is $\pm 39(30)$ MeV when running the Large Hadron
Collider at 7(13) TeV. We find that spurious correlations in older
PDF sets led to over-optimistic assumptions regarding normalization to
Z observables. In order to understand the origin...
Ian Lewis
(SLAC)
8/6/15, 4:00 PM
Electroweak and Higgs Theory
The Higgs+jet channel at the LHC is sensitive to the effects of new physics both in the total rate and in the transverse momentum distribution at high pT. We examine the production process using an effective field theory (EFT) language and discuss the possibility of determining the nature of the underlying high-scale physics from boosted Higgs production. The effects of heavy color triplet...
Ahmed Ismail
(Argonne National Laboratory/University of Illinois at Chicago)
8/6/15, 4:25 PM
Electroweak and Higgs Theory
Double Higgs production is a unique collider process, enabling the determination of the Higgs self-coupling, but is exceedingly rare in the Standard Model. I will review recent developments in the phenomenology of Higgs pair production. The double Higgs cross section may be enhanced not only by a modified Higgs self-coupling, but also by anomalous couplings involving the quarks and the Higgs,...
Kenneth Bloom
(University of Nebraska (US))
8/6/15, 4:50 PM
Electroweak and Higgs Experiment
We present a search for the production of a Higgs boson in association with a single top quark (tHq), using data samples collected by the CMS detector in pp collisions at center-of-mass energy of 8 TeV corresponding to integrated luminosity of 19.7 fb$^{−1}$. The search exploits a variety of top quark and Higgs boson decay modes resulting in final states with photons, bottom quarks, or...
Peter Onyisi
(University of Texas (US))
8/6/15, 5:15 PM
Electroweak and Higgs Experiment
The production of Higgs bosons in association with top quark pairs ($t\bar tH$) provides a measurement of the top quark Yukawa coupling that can be used to constrain possible deviations from the Standard Model induced by new physics. This talk will cover the results of the searches for $t\bar tH$ production at the ATLAS experiment using data collected during LHC Run 1. These include analyses...
Baris Altunkaynak
(University of Oklahoma)
8/7/15, 2:00 PM
Electroweak and Higgs Theory
We investigate the prospects for LHC discovery of a heavy Higgs boson ($H^0$ or $A^0$) decaying into a top quark and a charm quark within the general two Higgs doublet model (2HDM). Discovery of such signal will greatly improve our understanding of electroweak symmetry breaking and possible sources of tree level flavor changing neutral currents. Almost all the coupling measurements of the 125...
Robert Najem Clarke
(Lawrence Berkeley National Lab. (US))
8/7/15, 2:30 PM
Electroweak and Higgs Experiment
The full data-set collected by the ATLAS detector in 2012 is analyzed to search for Lepton Flavor Violating (LFV) decays of the 125 GeV Higgs boson in final states of $\tau_{had} + \mu$ and $\tau_{had} + e$. The search is based on data samples of proton-proton collisions at $\sqrt s = $ 8 TeV corresponding to an integrated luminosity of $20.3 fb^{-1}$. A cut-based approach is used, optimized...
Nathan Marshall Kellams
(University of Notre Dame (US))
8/7/15, 3:00 PM
Electroweak and Higgs Experiment
We present the first direct search for lepton flavor violating (LFV) decays of the Higgs Boson. LFV decays are permitted in many extensions of the standard model. Indirect constraints strongly limit the decay H to e mu, but allow H to e tau and H to mu tau to 10%. We present results in all three channels using the full run 1 data set collected by the CMS experiment at the LHC.
Prof.
Lorenzo Diaz-Cruz
(FCFM BUAP (Mexico))
8/7/15, 4:00 PM
Electroweak and Higgs Theory
Current measurements of the Higgs properties at LHC seem consistent with the Standard Model. The couplings with fermions and gauge bosons, when taken as function of the particle mass, should lay on a single line. However, in models with extended Higgs sector the diagonal Higgs couplings to fermions, could lay on different lines, while non-diagonal flavor-violating Higgs couplings could...
Hong Zhang
8/7/15, 4:30 PM
Electroweak and Higgs Theory
A future 100 TeV collider provides the opportunity to study the production of Higgs at large transverse momentum $p_T$. The effective field theory for Higgs, obtained by integrating out the top quark, breaks down when $p_T$ is larger than 200 GeV. We calculate the $p_T$ distribution at much larger $p_T$ using the framework of factorization, in which the cross section is expressed as...
Jan Fridolf Strube,
Jan Fridolf Strube
(CERN),
Jan Fridolf Strube
8/7/15, 5:00 PM
Electroweak and Higgs Experiment
The precise exploration of all aspects of the Higgs sector is one of the key goals for future colliders at the Energy Frontier. The International Linear Collider (ILC) provides the capability for model-independent measurements of all relevant couplings of the Higgs boson to fermions and gauge bosons, including direct measurements of the Top Yukawa coupling as well as of the Higgs...
