Events Archive

HEP Seminar - Dr.Catalina Oana Curceanu-The Frascati National Laboratory of the INFN- "The Schroedinger Cat Meets the Neutron Stars: From Exotic Atoms Studies to Impossible Atoms Hunting"
Thu, Jun 13, 2019, 2:00 pm2:00 pm

I shall present a series of frontier experiments searching for X rays coming from exotic atoms produced at the DAFNE collider of LNF-INFN (Italy) and from processes violating Quantum Mechanics’ predictions at the Italian Gran Sasso underground laboratory.
In the first part of the talk I shall introduce the studies of kaonic atoms in the…

HEP Seminar-Luigi Marchese-Oxford-"Higgs Boson Width at the LHC"
Fri, Mar 29, 2019, 11:00 am12:00 pm

In the Standard Model the Higgs boson is a very narrow resonance and therefore measuring its width is challenging. How can we constrain the Higgs boson total width at the LHC?  Presently, the best limits on the Higgs boson total width at the LHC are set using the off-shell Higgs production and decay to ZZ in the four-lepton or two-lepton-two…

HEP Seminar-Marcelo Vicente-"CMS Phase-2 Calorimeter Trigger Hardware Upgrades"
Thu, Mar 14, 2019, 2:00 pm3:00 pm

Technical presentation of the planned hardware upgrades for the CMS backend Calorimeter Trigger during Phase-2 that are being developed at the University of Wisconsin-Madison.

The current state of electronics will be presented and several of the key technical decisions during design specification will be discussed.

Speaker
HEP Seminar-Marcelo Vicente-"CMS Phase-2 Calorimeter Trigger Hardware Upgrades"
Thu, Mar 14, 2019, 2:00 pm3:00 pm

Technical presentation of the planned hardware upgrades for the CMS backend Calorimeter Trigger during Phase-2 that are being developed at the University of Wisconsin-Madison.

The current state of electronics will be presented and several of the key technical decisions during design specification will be discussed.

Speaker
Special Seminar- HEP Dicke Candidate-Yi Jia-MIT-"Precision Measurement of Elementary Particle and Nuclei Fluxes in Cosmic Rays with AMS on the International Space Station" (ISS)
Tue, Jan 15, 2019, 11:00 am12:00 pm

The Alpha Magnetic Spectrometer (AMS) is a general purpose high energy particle detector which was installed on the International Space Station (ISS) on May 19, 2011 to conduct a unique long term mission of fundamental physics research in space. To date, AMS has collected more than 130 billion charged cosmic rays with energies up to multi TeV…

Speaker
Special Seminar- HEP Dicke Candidate-Cecile Caillol-CERN-"Characterization of the Higgs Boson with the CMS Detector"
Fri, Jan 11, 2019, 2:00 pm3:00 pm

Abstract: "With the discovery of the Higgs boson by the ATLAS and CMS experiments in 2012, the fundamental question “Does the Higgs boson exist?” was replaced by “Is it really the Higgs boson of the standard model?”. In 2017, the observation of Higgs boson decays to tau leptons with a rate compatible with that expected in the standard model…

Speaker
HEP Seminar-Oskar Hartbrich-University of Hawaii-"Belle II - First Collisions in a New Particle Physics Experiment at the Intensity Frontier
Wed, Jan 9, 2019, 2:00 pm3:30 pm

Abstract
The B factory experiment Belle at the KEKB collider at KEK (Tsukuba, Japan) was built to experimentally investigate CP violation in the B system. Belle and BaBar ultimately confirmed large mixing induced CP violation, leading to the 2008 Nobel Prize in Physics for Kobayashi and Maskawa.
The upgrade of the accelerator and…

Special Seminar- HEP Dicke Candidate-Cecile Caillol-CERN-TBA
Fri, Jan 12, 2018, 2:00 pm2:00 pm
High Energy Physics Experimental Seminar-Livia Soffi-"Unvealing New Physics with Photons at LHc CMS Experiment", Jadwin 303
Mon, Sep 25, 2017, 4:00 pm4:00 pm

Since the discovery of the Higgs boson in 2012, the experimental program at the LHC has started to explore previously unreachable kinematical regimes, where potentially new heavy particles can be produced. The ATLAS and CMS ex- periments can search for new physics in a wide range of final states with the highest sensitivity to date. Among all…

Speaker
HEP Seminar-Pierluigi Bortignon-"Design and Performance of the Upgrade of the CMS L1 Trigger"
Tue, Jun 27, 2017, 2:00 pm2:00 pm

During its second run of operation, the LHC delivered proton-proton collisions at a centre-of-mass energy of 13 TeV with a peak  instantaneous luminosity of 151034cm−2s−1, almost double the peak luminosity reached during LHC Run1 and far larger than the design value.  The upgraded CMS Level-1 trigger is designed to improve the performance at…

HEP Seminar- Alexis Kalogeropoulos-DESY-SEARCH FOR SUPERSYMMETRY WITH TAU LEPTONS
Tue, Mar 7, 2017, 2:00 pm2:00 pm

Supersymmetry (SUSY) is a well-motivated theory beyond the standard model (SM)which provides solutions to several open questions in particle physics, e.g. the cancellation of quadratically divergent loop corrections to the mass of the Higgs boson.
In R-Parity conserving SUSY, the lightest SUSY particle (LSP) is stable and can be a viable…

HEP Seminar -Cristián Peña-"Searches for New Physics at CMS and Precision Timing Detectors”
Tue, Feb 14, 2017, 2:00 pm2:00 pm

Searches for dark matter and supersymmetry are part of an ambitious and well motivated quest to discover new physics at the LHC. In the first part of this seminar I will be presenting two novel searches for new physics using the data collected by the CMS experiment. The first is a search for dark matter in multijet events using the razor…

Special HEP Seminar-Jack Bradmiller-Feld-UCSB
Fri, Dec 9, 2016, 3:00 pm4:30 pm
TITLE: An Inclusive and Generic Search for Supersymmetry in the Multijet + Missing Momentum Final State Performed on pp Collision Data Collected with the CMS Detector ABSTRACT: For the past two years, the LHC has collided protons at a record-high center-of-mass energy of 13 TeV. This time has provided an opportunity to search for beyond standard…
HEP Seminar-Jack Bradmiller-Feld-UCSB
Thu, Dec 8, 2016, 3:00 pmThu, Dec 1, 2016, 4:30 pm
TITLE: "An Inclusive and Generic Search for Supersymmetry in the Multijet + Missing Momentum Final State Performed on pp Collision Data Collected with the CMS Detector" ABSTRACT: For the past two years, the LHC has collided protons at a record-high center-of-mass energy of 13 TeV. This time has provided an opportunity to search for beyond…
HEP Seminar-Jakob Salfeld-CERN-TBA
Fri, Nov 11, 2016, 11:00 amMon, Oct 31, 2016, 12:00 pm


Special HEP Seminar-Jakob Salfeld-Nebgen-"Precision measurements at the LHC: Luminosity and W/Z cross section measurements with the CMS"
Fri, Nov 11, 2016, 11:00 amThu, Nov 3, 2016, 12:30 pm
With the start of Run-2 of the LHC in 2015 physical processes predicted by the Standard Model are now being tested at 13 TeV centre-of-mass energy. In particular, the cross section of W and Z bosons in proton-proton collisions can be measured with high accuracy. The inclusive and differential cross sections are compared with predictions from…
HEP Seminar-Jakob Salfeld-CERN-“Precision measurements at the LHC: Luminosity and W/Z cross section measurements with the CMS”
Fri, Nov 11, 2016, 11:00 am12:30 pm
With the start of Run-2 of the LHC in 2015 physical processes predicted by the Standard Model are now being tested at 13 TeV centre-of-mass energy. In particular, the cross section of W and Z bosons in proton-proton collisions can be measured with high accuracy. The inclusive and differential cross sections are compared with predictions from…
HEP Seminar-Sinziana Paduroiu-UNIGE-"Warm Dark Matter Cosmologies: in theory and simulations"
Wed, Nov 9, 2016, 3:00 pm4:00 pm
Warm dark matter models are a viable alternative to the cold dark matter models challenged by many recent observations (e.g. dwarf galaxies, pure-disk galaxies, matter distribution in voids) and by the narrowed detection limits. I will review some theoretical assumptions made in describing the properties and behavior of different WDM candidates …
High Energy Physics Experimental Seminar-Isobel Ojalvo-U of Wisc-Status and Future of Tau physics at the LHC
Fri, Dec 18, 2015, 3:00 pm4:30 pm
The observation of a Higgs boson by the LHC experiments through its decays to vector bosons was an extremely significant milestone in particle physics research; one which redefined the research priorities in the field. After this discovery the first step was to test the compatibility of the new particle with the SM Higgs by searching for the…