Conveners
Higgs III
- Chien-Yi Chen (Brookhaven National Laboratory)
Prof.
Stephen Martin
(Northern Illinois University)
07/05/2013, 14:00
parallel talk
The Higgs mass determination from diphoton events at the LHC is affected by interference between the Higgs resonant and continuum background amplitudes with the same initial and final states. I will discuss this shift in the diphoton mass peak both for the leading order process and for the process with an additional central jet.
Ian Lewis
(Brookhaven National Laboratory)
07/05/2013, 14:15
parallel talk
We show that weak scale vector-like fermions with order one couplings to the Higgs can lead to a novel mechanism for a strongly first-order electroweak phase transition (EWPhT), through their tendency to drive the Higgs quartic coupling negative. These same fermions could also enhance the loop-induced branching fraction of the Higgs into two photons. Our results suggest that measurements of...
Jennifer Kile
(Northwestern University)
07/05/2013, 14:30
parallel talk
The Standard Model calculation of a Higgs boson decaying to two photons has the curious feature of being finite but regulator-dependent. When calculated using dimensional regularization, it yields a physically reasonable, gauge-invariant result, but when calculated in four dimensions, spurious terms arise which violate gauge invariance. We explore the hypothesis that the four-dimensional...
Arun Thalapillil
(Rutgers University)
07/05/2013, 14:45
parallel talk
The discovery of the Higgs boson has opened up novel avenues to search for new physics, especially in higgs decays. We investigate a specific class of higher dimensional operators that could be potentially interesting in this context.
Dorival Goncalves
(Max-Planck-Institut for Physics)
07/05/2013, 15:00
parallel talk
Recently, the ATLAS and CMS experiments have reported the discovery of a Higgs like resonance at the LHC. Determining the spin and CP quantum numbers or the form of its interaction Lagrangian channel-by-channel will be the next step towards a more precise understanding of the new state. We show how weak-boson-fusion Higgs production and associated ZH production can be used to separate...
Dr
Yue Zhang
(Caltech)
07/05/2013, 15:15
parallel talk
We observe a generic connection between LHC Higgs data and electroweak baryogenesis: the particle that contributes to CP violating $hgg$ or $h\gamma\gamma$ vertex would provide a CP violating source during first order phase transition. It is illustrated in the 2HDM that a common CP violating phase controls the lightest Higgs properties at the LHC, electric dipole moments and the CP violating...
Mr
Michael Park
(Rutgers, The State University of New Jersey)
07/05/2013, 15:30
parallel talk
In this talk, we consider the possibility that the Higgs-like resonance recently observed at the LHC might have some contribution from a yet-unidentified pseudo-scalar component. We parameterize the magnitude of such a possible interference effect from an effective operator perspective, and propose a kinematic observable that would make the resulting violations of parity and time-reversal...
Samuel McDermott
07/05/2013, 15:45
parallel talk
We explore new physics scenarios which are optimally probed through precision Higgs measurements rather than direct collider searches. Such theories consist of additional electroweak charged or singlet states which couple directly to or mix with the Higgs boson; particles of this kind may be weakly constrained by direct limits due to their meager production rates and soft decay products. We...
