Richard Ruiz
(Durham University)
26/09/2018, 14:05
Particle Phenomenology
Heavy neutrinos $(N)$ are a common prediction in low-scale neutrino mass models and may be accessible at experiments such as LHC, or its potential successors like the 27 TeV HE-LHC or 100 TeV VLHC. We show how collider searches for such objects employing an usual jet veto scheme can radically improve signal and background separation, and hence greatly improve sensitivity to EW- and TeV-scale...
Azaria Coupe
(University of Southampton)
26/09/2018, 14:25
Particle Phenomenology
In the post-Higgs era of particle physics there remain many open questions requiring physics Beyond the Standard Model. Minimal Walking Technicolor (WTC) theory provides an alternative to the SM Higgs mechanism of mass generation, where a new strong force with 'walking' (slowly running) coupling breaks electroweak symmetry dynamically. This resolves the hierarchy problem as well as providing a...
Abinash Kumar Nayak
(IMSc, HBNI, Chennai)
26/09/2018, 14:42
Particle Phenomenology
CPT is presumed to be one of the fundamental symmetry of nature. Lorentz invariance of the quantum field theories and CPT symmetry are intertwined with each other. With the advent of high precision experimental era, we should test these fundamental symmetries whose violations can have profound impact on our understanding of the physical laws. In this talk, I will talk about observing CPT...
Qin Qin
(University of Siegen)
26/09/2018, 14:59
Particle Phenomenology
We calculate tree-level contributions to the inclusive rare $\bar B \to X_{s(d)} \, \ell^+\ell^-$ decays. At the partonic level they stem from the five-particle process $b \to s(d) \, q \bar q \, \ell^+\ell^-$, with $q \in \{u,d,s\}$. While for $b \to d$ transitions such five-body final states contribute at the same order in the Wolfenstein expansion compared to the three-body partonic decay,...
Patrick Foldenauer
(Institut für Theoretische Physik, Heidelberg University)
26/09/2018, 15:19
Particle Phenomenology
I want to shed some light on the full constraining power of experimental bounds derived for hidden photons by applying them to gauge bosons of a weakly coupled $U(1)_{B-L}$, $U(1)_{L_\mu-L_e}$, $U(1)_{L_e-L_\tau}$ and $U(1)_{L_\mu-L_\tau}$. In contrast to a hidden photon that acquires universal couplings to charged SM particles through kinetic mixing with the photon, several SM particles are...
Carlos Tamarit
(Technische Universität München)
26/09/2018, 15:36
Particle Phenomenology
Chiral electroweak anomalies predict baryon (B) and lepton (L) violating fermion interactions, which can be dressed with large numbers of Higgs and gauge bosons. The estimation of the total B + L-violating rate from an initial two-particle state — potentially observable at colliders — has been the subject of an intense discussion, mainly centered on the resummation of boson emission, which is...
