Joint Theory Seminar
Speaker: Matthew Dolan (SLAC)
Title: Double Higgs Production at the LHC
Host: Yuhsin
Room: 432
Abstract: The measurement of the Higgs trilinear self-coupling is an important part of the LHC Higgs program at 14 TeV. This is a crucial measurement which directly interrogates the mechanism of electroweak symmetry breaking in the Standard Model and requires the presence of two Higgses in the final state. Recent studies have uncovered a number of different ways this quantity can be constrained in the high energy LHC run. I will also discuss the impact that Beyond the Standard Model physics can have on di-Higgs physics.
User:
High-Energy Seminars
Time:
8:00am - 9:00am
Description:
HE Seminar
Speaker: Sho Maruyama, FNAL
Title: VBF SUSY at CMS
Host: Chertok
Room: 432
Abstract: The Large Hadron Collider (LHC) is an ideal machine to look for new colored particles. On general grounds, the search for a neutral spin-0 color-octet particle is motivated by exploring a set of spin, electric charge, and color quantum numbers that is complementary to those of existing searches. Such a particle is included in the octo-triplet model, which introduces three particles (Theta0,Theta+,Theta-) that transform as a color octet and weak triplet under SU(3)c cross SU(2)W. I present the first search for neutral octo-triplet scalar particles in Z+jets final states, using dilepton data collected by the Compact Muon Solenoid detector at the LHC corresponding to an integrated luminosity of 19.7 fb-1 of proton-proton collisions at a center-of-mass energy of 8 TeV.
User:
High-Energy Seminars
Time:
4:10am - 5:10am
Send Reminder:
Yes - 1 day 0 hour 0 minutes before start
Description:
LHC Lunch
Informal lunch with occasional talks
Host: Yuhsin Tsai
Speaker: Yue Zhao (Stanford)
Title: A Parametrically Enhanced Hidden Photon Search
Room: 432
Abstract: Many theories beyond the Standard Model contain hidden photons. A light hidden photon will generically couple to the Standard Model through a kinetic mixing term, giving a powerful avenue for detection using "Light-Shining-Through-A-Wall"-type transmission experiments with resonant cavities. We demonstrate a parametric enhancement of the signal in such experiments, resulting from transmission of the longitudinal mode of the hidden photon. While previous literature has focused on the production and detection of transverse modes, the longitudinal mode allows a significant improvement in experimental sensitivity. Although optical experiments such as ALPS are unable to take useful advantage of this enhancement, the reach of existing microwave cavity experiments such as CROWS is significantly enhanced beyond their published results. Future microwave cavity experiments, designed with appropriate geometry to take full advantage of the longitudinal mode, will provide a powerful probe of hidden-photon parameter space extending many orders of magnitude beyond current limits, including significant regions where the hidden photon can be dark matter.
User:
High-Energy Seminars
Time:
5:30am - 6:30am
Send Reminder:
Yes - 3 days 4 hour 0 minutes before start
Description:
Joint Theory Seminar
Speaker:
Title:
Host:
Room: 432
Abstract:
User:
High-Energy Seminars
Time:
8:00am - 9:00am
Send Reminder:
Yes - 0 days 4 hour 0 minutes before start
Description:
User:
High-Energy Seminars
Time:
4:10am - 5:10am
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Yes - 0 days 4 hour 0 minutes before start
Description:
Special Joint Theory Seminar
Speaker: Sergei Dubovsky
Title: Flux Tube Spectra from Approximate Integrability at Low Energies
Host: Luty
Room: 432
Abstract: We propose a new approach for the calculation of the spectrum of excitations of QCD flux tubes. The method relies on approximate integrability of the low energy effective theory describing the flux tube excitations and is based on the Thermodynamic Bethe Ansatz (TBA). The approximate integrability is a consequence of the Lorentz symmetry of QCD. For excited states the convergence of the TBA technique is significantly better than that of the traditional perturbative approach.The improved theoretical control makes it manifest that existing lattice data provides strong evidence for a new pseudoscalar particle localized on the QCD fluxtube - the worldsheet axion.
User:
High-Energy Seminars
Time:
8:00am - 9:00am
Description:
HE Seminar
Speaker: Abe Seiden
Title: ATLAS Phase-II Planning and R&D
Host: Chertok
Room: 432
Abstract:
The HL-LHC and the significantly upgraded CMS and ATLAS detectors (called the Phase-II upgrade) have been recommended as the highest priority large scale particle physics construction projects for the future by the recent P5 committee. Both CMS and ATLAS are now working on the concrete plans for this upgrade, with a goal of collecting 3000 fb-1 of data at the very high luminosity HL-LHC. I will review some of the physics goals for the HL-LHC running and the ATLAS upgrade plan as well as the associated R&D being done in the U.S. to answer some of the challenges presented by the upgrade.
User:
High-Energy Seminars
Time:
5:30am - 6:30am
Send Reminder:
Yes - 3 days 4 hour 0 minutes before start
Description:
Joint Theory Seminar
Speaker:
Title:
Host:
Room: 432
Abstract:
User:
High-Energy Seminars
Time:
9:00am - 10:00am
Description:
HE Seminar
Speaker:
Title:
Host:
Room: 432
Abstract:
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:
User:
High-Energy Seminars
Time:
9:00am - 10:00am
Description:
HE Seminar
Speaker:
Title:
Host:
Room: 432
Abstract:
5:30am» Joint Theory Seminar: Matthew Dolan