Joint Theory Seminar
Speaker: David Kaplan (JHU and Stanford)
Title: Cosmological Solution to the Hierarchy Problem
Host: Markus Luty
Room: 432
Abstract: A new class of solutions to the electroweak hierarchy problem is presented that does not require either weak scale dynamics or anthropics. Dynamical evolution during the early universe drives the Higgs mass to a value much smaller than the cutoff. The simplest model has the particle content of the standard model plus a QCD axion and an inflation sector. The highest cutoff achieved in any technically natural model is 10^8 GeV.
User:
High-Energy Seminars
Time:
9:00am - 10:00am
Description:
HE Seminar
Speaker:
Title:
Host:
Room: 432
Abstract:
User:
High-Energy Seminars
Time:
6:00am - 7:30am
Description:
Terning Group Meeting
User:
High-Energy Seminars
Time:
6:30am - 7:30am
Send Reminder:
Yes - 3 days 4 hour 0 minutes before start
Description:
Joint Theory Seminar
Speaker: Yun Jiang (UC Davis)
Title: Exotic (dark) Higgs bosons beyond the Standard Model
Host: Ennio Salvioni
Room: 432
Abstract: The discovery of SM-like Higgs boson at the LHC clearly indicates that models with an extended Higgs sector will be significantly constrained by the data. However, it is still worthwhile and important to assess all possibilities for other Higgs-like states that may have escaped detection at Run 1. In the talk we will address an extreme case in which there is a pseudoscalar (A) light enough that the SM-like state (h) can decay into AA. In addition, with protection by an extra Z2 symmetry, non-SM Higgs boson could be a possible dark matter (DM) candidate. As an example, we consider the singlet extension of the two-Higgs-doublet model. It turns out that the value of tan beta is well-determined if the DM interaction with nucleons in the model violates isospin symmetry, leading to a large suppression on the DM-nucleon cross section in the low mass region.
User:
High-Energy Seminars
Time:
9:00am - 10:00am
Description:
HE Seminar
Speaker:
Title:
Host:
Room: 432
Abstract:
User:
High-Energy Seminars
Time:
6:00am - 7:30am
Description:
Terning Group Meeting
User:
High-Energy Seminars
Time:
6:30am - 7:30am
Send Reminder:
Yes - 3 days 4 hour 0 minutes before start
Description:
Joint Theory Seminar
Speaker:
Title:
Host:
Room: 432
Abstract:
