Conveners
Higgs III
- Chien-Yi Chen (Brookhaven National Laboratory)
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Prof. Stephen Martin (Northern Illinois University)07/05/2013, 14:00parallel talkThe 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.Go to contribution page
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Ian Lewis (Brookhaven National Laboratory)07/05/2013, 14:15parallel talkWe 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...Go to contribution page
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Jennifer Kile (Northwestern University)07/05/2013, 14:30parallel talkThe 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...Go to contribution page
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Arun Thalapillil (Rutgers University)07/05/2013, 14:45parallel talkThe 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.Go to contribution page
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Dorival Goncalves (Max-Planck-Institut for Physics)07/05/2013, 15:00parallel talkRecently, 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...Go to contribution page
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Dr Yue Zhang (Caltech)07/05/2013, 15:15parallel talkWe 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...Go to contribution page
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Mr Michael Park (Rutgers, The State University of New Jersey)07/05/2013, 15:30parallel talkIn 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...Go to contribution page
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Samuel McDermott07/05/2013, 15:45parallel talkWe 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...Go to contribution page