Gearing up for LHC13Aug 31, 2015 - Oct 16, 2015
2015 will be an important year for the Large Hadron Collider. With the start of Run 2 at a centre of mass energy of 13-14 TeV, it will be possible to probe the existence of heavier states as expected in extensions of the Standard Model motivated by e.g. naturalness and dark matter. Preliminary results from Run 2 could either confirm the Standard Model with high accuracy or provide first hints of new structures at the TeV scale. In either case, the results from Run 2 will determine much of the future of the field for decades. The workshop aims to bring together experimentalists and theorists to discuss early Run 2 results and their implications for particle physics.
-New and upcoming results from the LHC run II
-Implications for physics beyond the Standard Model
-New searches at LHC
-Future of particle physics
Participants are asked to stay for at least 2 weeks.
Each week will focus on different topics:
week 1-2: supersymmetry
week 3-4: Higgs couplings, composite Higgs, extended Higgs sectors
week 5-6: exotics, dark matter
G. Giudice (CERN, Switzerland), C. Grojean (ICREA at IFAE Barcelona, Spain), M. Redi (INFN Florence, Italy), Marumi Kado (CERN, Switzerland) P. Sphicas (University of Athens Greece and CERN, Switzerland), Jesse Thaler (MIT Center for Theoretical Physics Cambridge, USA), K. Zurek (LBNL and Berkeley Center for Theoretical Physics (UCB))
Gearing up for LHC13 (Conference) - Oct 13, 2015
|Sep 01, 2015 - 11:00||James Olsen||Prospects for SUSY searches at 13 TeV: CMS perspective||Seminar||Slides|
|Sep 02, 2015 - 11:00||Thomas Gregoire||Models of Split SUSY at Current and Future Colliders||Seminar||Slides|
|Sep 03, 2015 - 11:00||Alberto Mariotti||Z-peaked excess in goldstini scenarios||Seminar||
Z-peaked excess in goldstini scenarios
I will first review the 3-sigma Z-peaked excess recently reported by the ATLAS collaboration and its possible interpretation in supersymmetric models. I will then discuss basic aspects of scenarios with multiple supersymmetry breaking sectors in gauge mediation. In particular I will explain how the low energy spectrum presents in this case extra light fermionic degrees of freedom, the pseudo-goldstini. I will derive their radiatively induced mass and describe their interactions with the MSSM particles. I will then show how a simplified model in the MSSM with pseudo-goldstini can accommodate the Z-peaked ATLAS excess without conflicting with other existing LHC searches.
|Sep 04, 2015 - 11:00||Diego Redigolo||General Gauge Mediation at the Weak Scale||Seminar||Slides|
|Sep 07, 2015 - 11:00-13:00||Dario Buttazzo||Extra Higgs bosons in SUSY and beyond||Seminar||
Extra Higgs bosons in SUSY and beyond
In the motivated hypothesis that the Higgs bosons of the next-to-minimal supersymmetric Standard Model (NMSSM) be the lightest new particles around, I outline a possible overall strategy to search for signs of the extra CP-even scalars. In a generic NMSSM which minimises the fine-tuning of the electroweak scale, I show how the measurements of the couplings of the 125 GeV Higgs boson and the direct searches for the new states at colliders constrain the physical parameters in a complementary way. I will devote particular attention to the physically interesting limit where the Higgs mixes mainly with a singlet scalar, which can be treated in a simple and fully model-independent way. After analysing the current bounds, I will present an estimate of the reaches of future machines – from the forthcoming LHC runs up to a futuristic 100 TeV collider.
|Sep 08, 2015 - 11:00||Pascal Pralavorio||SUSY lessons from Run1 and why we could still miss it in Run2||Seminar||Slides|
|Sep 08, 2015 - 14:00||Ryuichiro Kitano||Discussion on Strong CP problem||Discussion|
|Sep 09, 2015 - 11:00||Hyung Do Kim||N Naturalness : Cosmological solution to the hierarchy problem||Seminar|
|Sep 10, 2015 - 11:00||Robert Ziegler||Light Sparticles in NMSSM + Gauge Mediation||Seminar||
Light Sparticles in NMSSM + Gauge Mediation
I will discuss a simple and predictive model that combines the NMSSM and Gauge Mediation. Originally proposed by Delgado, Giudice and Slavich, we have re-analyzed this model and found new interesting regions in the parameter space with a light singlet state that mixes with the SM-like Higgs at 125 GeV. This mixing is small enough to evade LEP and LHC constraints, but large enough to give a substantial contribution to the tree-level Higgs mass. This allows to reduce the required mass scale of supersymmetric particles, making them accessible at the early phase of LHC Run II. Essentially only a single parameter is left undetermined that controls the gravitino phenomenology and can lead to novel collider signatures.
|Sep 11, 2015 - 11:00||Daniel Stolarski||Searching for new Physics with the Higgs||Seminar||
Searching for new Physics with the Higgs
In this talk I will discuss how both production and decay of
the Higgs can be used to discover new physics. On the production side,
I will focus on new colored states such as stops modifying single and
double Higgs production via gluon fusion.
On the decay side, I will focus on kinematic distribution in the Higgs
decay to four leptons to show how those can be used to make
measurements that are complimentary to rate measurements, and can be
used to discover, for example, CP violation.
|Sep 14, 2015 - 11:00||Giuliano Panico||Effective field theory for double Higgs production||Seminar||
Effective field theory for double Higgs production
I will present a detailed study of double Higgs production via gluon fusion in the effective field theory framework. I will show that, in addition to the extraction of the Higgs trilinear coupling, this process can also provide useful information on several other Higgs interactions, most noticeably the ones involving the top quark. As an explicit application, I will focus on the hh -> bb gamma gamma channel and I will provide an estimate of the achievable precision at the 14 TeV LHC and at a future 100 TeV hadronic collider.
|Sep 15, 2015 - 11:00||Daniel Froidevaux||What have we learned from the run-1 ATLAS+CMS coupling combination towards run-2 measurements?||Seminar||Slides|
|Sep 16, 2015 - 11:00||Asimina Arvanitaki||The Sound of Dark Matter: Searching for Light Scalars with Resonant-Mass Detectors||Seminar||Slides|
|Sep 17, 2015 - 11:00||Adam Falkowski||Model-independent constraints on physics beyond the SM||Seminar||
Model-independent constraints on physics beyond the SM
I will discuss the interpretation of collider data in a model-independent framework of effective field theory beyond the standard model (SM). This involves extending the SM Lagrangian by a set of higher-dimensional operators. One effect of these operators is to modify the couplings of the SM Higgs and gauge bosons away from the SM prediction. In the talk I will discuss the current constraints on these operators and the future prospects to probe them.
|Sep 17, 2015 - 14:30||Curtin, Strassler||Neutral Naturalness||Discussion|
|Sep 18, 2015 - 11:00||Andrea Thamm||Composite heavy vector triplets in the ATLAS di-boson excess and at future colliders||Seminar||Slides|
|Sep 21, 2015 - 11:00||Jamison Galloway||Induced Electroweak Symmetry Breaking||Seminar||
Induced Electroweak Symmetry Breaking
Induced EWSB is a framework wherein the VEV of our light Higgs stems from a linear coupling of the Higgs doublet to another, heavier, EWSB source. This can be simply and naturally arranged in a strongly coupled model, or alternatively as a particular limit of a perturbative two Higgs doublet model. In this talk, I’ll discuss these various model constructions and their phenomenological prospects at the LHC.
|Sep 22, 2015 - 11:00||Bruno Mansoulie||Where do we stand with high mass diboson searches in the Higgs sector?||Seminar||
Where do we stand with high mass diboson searches in the Higgs sector?
* High mass Higgs (neutral scalar) resonances searches:
|Sep 23, 2015 - 11:00||Alex Azatov||Resolving the gluon fusion loop for the Higgs production LHC||Seminar||Slides|
|Sep 23, 2015 - 14:30||Jesse Thaler||More on the LHC di-boson excess||Discussion||Slides||Bonus material||Video|
|Sep 24, 2015 - 11:00||Andrea Tesi||(Composite) Twin Higgs||Seminar||Slides|
|Sep 25, 2015 - 11:00||Stefania Gori||Higgs and flavor at the LHC||Seminar||Slides|
|Sep 28, 2015 - 11:00||Felix Yu||The Co-annihilation Codex||Seminar||Slides|
|Sep 29, 2015 - 11:00||William Murray||Situation and Outlook for (hadronic) diboson resonances||Seminar||Slides|
|Sep 30, 2015 - 11:00||Samuel McDermott||The Galactic Center Excess: Have We Started to See Dark Matter?||Seminar||Slides|
|Oct 01, 2015 - 11:00||Yanou Cui||Probing Baryogenesis with Displaced Vertices at the LHC||Seminar||Slides|
|Oct 01, 2015 - 14:30||Markus Luty||Higgs Beyond the Standard Model||Discussion||Bonus material|
|Oct 02, 2015 - 11:00||John March-Russell||Twin Higgs Dark Matter||Seminar||Slides|
|Oct 05, 2015 - 11:00||Hyun Min Lee||Communication to thermal dark matter with strong self-interactions||Seminar||Slides|
|Oct 06, 2015 - 11:00||Andrey Katz||Low Scale Bryogenesis From Hidden Bubbles Collisions||Seminar||Slides|
|Oct 07, 2015 - 11:00||James Unwin||Cosmology with democratic initial conditions||Seminar||Slides|
|Oct 07, 2015 - 14:30||Kathryn Zurek||Dark Matter beyond WIMPs||Discussion|
|Oct 08, 2015 - 11:00||Adrian Carmona||Scalar heavy WIMPs from composite dynamics||Seminar||
Scalar heavy WIMPs from composite dynamics
I will present scenarios where the full Standard Model (including the Higgs) is extended with a new strongly-interacting composite sector featuring the spontaneous symmetry breaking of some global symmetry. I will show that under well-motivated conditions, the lightest pNGBs are natural dark matter candidates since they are protected by a symmetry not even broken in the electroweak phase. Finally, I will present a couple of minimal models which are compatible with current bounds from dark matter searches as well as electroweak and collider constraints on new resonances.
|Oct 09, 2015 - 11:00||Tongyan Lin||Dark sectors and missing energy searches at the LHC||Seminar||Slides|