ICHEP 2016 Chicago

Session

Beyond the Standard Model

B

4 Aug 2016, 09:00

Chicago IL USA

Conveners

Beyond the Standard Model: 1

• Bruce Mellado Garcia (University of the Witwatersrand)
• Seema Sharma (Indian Institute of Science Education and Research (IN))

Beyond the Standard Model: 2

• Bruce Mellado Garcia (University of the Witwatersrand)
• Seema Sharma (Indian Institute of Science Education and Research (IN))

Beyond the Standard Model: 3

• Kiwoon Choi (KAIST)

Beyond the Standard Model: 4

• JiJi Fan (Brown University)

Beyond the Standard Model: 5

• JiJi Fan (Brown University)

Beyond the Standard Model: 6

• Seema Sharma (Indian Institute of Science Education and Research (IN))
• Bruce Mellado Garcia (University of the Witwatersrand)

Beyond the Standard Model: 7

• Seema Sharma (Indian Institute of Science Education and Research (IN))
• Bruce Mellado Garcia (University of the Witwatersrand)

Beyond the Standard Model: 8

• Kiwoon Choi (KAIST)

Beyond the Standard Model: 9

• Seema Sharma (Indian Institute of Science Education and Research (IN))
• Bruce Mellado Garcia (University of the Witwatersrand)

Beyond the Standard Model: 10

• Bruce Mellado Garcia (University of the Witwatersrand)
• Seema Sharma (Indian Institute of Science Education and Research (IN))

548. Search for supersymmetry with jets and missing transverse momentum in pp collisions at 13 TeV with CMS (15' + 5')

Francesco Pandolfi (ETH Zürich)

04/08/2016, 09:00

Beyond the Standard Model

Oral Presentation

A search for new physics is performed based on multijet events with large missing transverse momentum produced in 13 TeV proton-proton collisions. The data sample, corresponding to an integrated luminosity of 2.2 fb-1, was collected with the CMS detector at Run 2 of the CERN LHC. The data are examined in search regions of jet multiplicity, bottom-quark jet multiplicity, missing transverse...

857. Inclusive searches for squarks and gluinos in fully hadronic final states with the ATLAS detector (15' + 5')

David Miller (University of Chicago (US))

04/08/2016, 09:20

Beyond the Standard Model

Oral Presentation

Despite the absence of experimental evidence, weak scale supersymmetry remains one of the best motivated and studied Standard Model extensions. The recent increase in the center of mass energy of the proton-proton collisions gives a unique opportunity to extend the sensitivity to production of supersymmetric particles at the Large Hadron Collider. This talk summarises recent ATLAS results on...

552. Search for supersymmetry in events with one lepton, jets and missing transverse momentum in pp collisions at 13 TeV with CMS (15' + 5')

Artur Apresyan (California Institute of Technology (US))

04/08/2016, 09:40

Beyond the Standard Model

Oral Presentation

Results are reported from a search for supersymmetric particles in pp collisions in the final state with a single, high pT lepton; multiple jets, including at least one btagged jet; and large missing transverse momentum. The data sample corresponds to 2.1 fb-1 recorded by the CMS experiment at ps = 13 TeV. The search focuses on processes leading to high jet multiplicities, such as gluino pair...

858. Inclusive searches for squarks and gluinos in lepton channels with the ATLAS detector (15' + 5')

Lucian Stefan Ancu (Universite de Geneve (CH))

04/08/2016, 10:00

Beyond the Standard Model

Oral Presentation

Despite the absence of experimental evidence, weak scale supersymmetry remains one of the best motivated and studied Standard Model extensions. The recent increase in the center of mass energy of the proton-proton collisions gives a unique opportunity to extend the sensitivity to production of supersymmetric particles at the Large Hadron Collider. This talk summarises recent ATLAS results on...

558. Search for supersymmetry in events with two or more leptons in pp collisions at 13 TeV with CMS (15' + 5')

Marc Dunser (CERN)

04/08/2016, 10:20

Beyond the Standard Model

Oral Presentation

We present a search for new physics in events with one or two low-momentum leptons and missing transverse energy, based on the first proton-proton integrated luminosity recorded with the CMS detector at 13 TeV. The final state can be the phenomenology of SUSY models foreseeing a small mass splitting between the lightest supersymmetric particle and e.g. the top squark or chargino, in the so...

861. Searches for electroweak production of supersymmetric gauginos and sleptons with the ATLAS detector (15' + 5')

Dongliang Zhang (University of Michigan (US))

04/08/2016, 10:40

Beyond the Standard Model

Oral Presentation

Many supersymmetry models feature gauginos and also sleptons with masses less than a few hundred GeV. These can give rise to observables direct pair production rates at the LHC. The talk presents results from searches for gaugino and slepton pair production in final states with leptons, including prospects for very high integrated luminosities.

617. Search for electroweak production of SUSY at CMS (15' + 5')

Santiago Folgueras (Purdue University (US))

04/08/2016, 11:30

Beyond the Standard Model

Oral Presentation

Searches for the direct electroweak production of supersymmetric charginos and neutralinos in topologies containing leptons and W, Z, and Higgs bosons are presented.

1069. Global Fits of the MSSM with GAMBIT (15' + 5')

Jonathan Cornell (McGill University)

04/08/2016, 11:50

Beyond the Standard Model

Oral Presentation

The wide range of probes of physics beyond the standard model leads to the need for tools that combine experimental results to make the most robust possible statements about the validity of theories of new physics and the preferred regions of their parameter space. In this talk, I will introduce a new code for such analyses: GAMBIT, the Global and Modular BSM Inference Tool. GAMBIT is a...

616. Phenomenological MSSM interpretation of CMS results (15' + 5')

Samuel Louis Bein (Florida State University (US))

04/08/2016, 12:10

Beyond the Standard Model

Oral Presentation

Using a global Bayesian analysis, it is shown how the results from searches for supersymmetry performed by CMS constrain the Minimal Supersymmetric Standard Model (MSSM). The study is performed within the framework of the phenomenological MSSM (pMSSM), a 19-parameter realization of the R-parity conserving weakscale MSSM, that captures most of the latter’s phenomenological features and which,...

682. CheckMATE: Checkmating new physics at the LHC (15' + 5')

Jamie Tattersall (RWTH Aachen)

04/08/2016, 12:30

Beyond the Standard Model

Oral Presentation

In the first four years of running, the LHC has delivered a wealth of new data that is now being analysed. The two multi-purpose detectors, ATLAS and CMS, have performed many searches for new physics but theorists are eager to test their own particular model. We present the program CheckMATE (Check Models At Terascale Energies) that helps to automise this procedure so that new theories can...

556. Search for third generation squarks in pp collisions at 13 TeV with CMS (15' + 5')

Nadja Strobbe (Fermi National Accelerator Lab. (US))

04/08/2016, 12:50

Beyond the Standard Model

Oral Presentation

A search for direct top squark pair production in the hadronic final state is presented. The data used are 2.3 fb-1 of pp collision data at 13 TeV taken with the CMS detector in 2015.

860. Search for third generation squarks in pp collisions at 13 TeV with ATLAS (15' + 5')

Kilian Rosbach (Universität Freiburg (DE))

04/08/2016, 13:10

Beyond the Standard Model

Oral Presentation

Naturalness arguments for weak-scale supersymmetry favour supersymmetric partners of the third generation quarks with masses not too far from those of their Standard Model counterparts. Top or bottom squarks with masses of a few hundred GeV can also give rise to large direct pair production rates at the LHC. The recent increase in the center of mass energy of the proton-proton collisions...

306. Supersymmetry versus Extra Dimensions at the LHC (15' + 5')

Prof. Satyanarayan Nandi (Oklahoma State University)

04/08/2016, 14:30

Beyond the Standard Model

Oral Presentation

Non-minimal universal extra dimensions (nmUED) involve the choice of boundary localized kinetic terms (BLKT) for the 5 dimensional gauge bosons and fermions. We find that with suitable choice of these parameters needed to explain the current Higgs data, the BLK terms removes the approximate degeneracy of the KK mass spectrum, and the pair productions of the level-1 quarks and gluons give rise...

557. Search for supersymmetry with diphotons in pp collisions at 13 TeV with CMS (15' + 5')

Si Xie (California Institute of Technology (US))

04/08/2016, 14:50

Beyond the Standard Model

Oral Presentation

We present a search for supersymmetry in diphoton plus jets plus missing transverse energy final states. The analysis uses data collected with the CMS detector at a center-of-mass energy of 13 TeV.

863. Searches for SUSY in photons and tau channels with the ATLAS detector (15' + 5')

Bruce Andrew Schumm (University of California,Santa Cruz (US))

04/08/2016, 15:10

Beyond the Standard Model

Oral Presentation

The talk presents searches for the prompt decay of supersymmetric particles in events containing photons or taus and large transverse missing momentum, performed by the ATLAS experiment. The final states considered are particularly motivated in gauge mediated supersymmetry breaking models with a light gravitino as the lightest supersymmetric particle. The increase in the center-of-mass energy...

1507. Imposing LHC constraints on the combined Anomaly and $Z^\prime$ Mediation Mechanism of Supersymmetry Breaking (15' + 5')

Joydeep Roy (Wayne State University)

04/08/2016, 15:30

Beyond the Standard Model

Oral Presentation

Combining anomaly with $Z^\prime$ mediation allows us to solve the tachyonic problem of the former and avoid fine tuning in the latter. This model includes an extra $U(1)^\prime$ gauge symmetry and extra singlet scalar $S$ which provides a solution to the `$\mu$ problem' of the MSSM. The low-energy particle spectrum is calculated from the UV inputs using the Renormalization Group Equations....

1532. Naturalizing Supersymmetry with a Two-Field Relaxion Mechanism (15' + 5')

Prof. Jason Evans (Korean Institute for Advanced Study)

04/08/2016, 15:50

Beyond the Standard Model

Oral Presentation

We present a supersymmetric version of a two-field relaxion model that natu- ralizes tuned versions of supersymmetry. This arises from a relaxion mechanism that does not depend on QCD dynamics and where the relaxion potential barrier height is controlled by a second axion-like eld. During the cosmological evolution, this allows the relaxion to roll with a nonzero value ...

862. Searches for R-Parity violating SUSY with the ATLAS detector (15' + 5')

Suen Hou (Academia Sinica (TW))

04/08/2016, 16:10

Beyond the Standard Model

Oral Presentation

The violation of R-parity allows new signatures to be pursued in the search for supersymmetry at the LHC. This talk presents the latest results from the ATLAS experiment on searches for R-parity vilating SUSY using data from pp collisions at a centre-of-mass energy of 13 TeV. The results presented are for dedicated searches for resonances, as well as a systematic analysis of the constraints...

1330. Lighting up Collider Searches for Electroweak States (15' + 5')

Ahmed Ismail (Argonne National Laboratory/University of Illinois at Chicago)

04/08/2016, 17:00

Beyond the Standard Model

Oral Presentation

Despite appearing in many extensions of the Standard Model, uncolored electroweak particles face limited collider search prospects. For nearly degenerate electroweak multiplets where the lightest state is electrically neutral, searches typically rely on pair production of the new states in association with visible radiation, e.g. the mono-X final state. We show that for such new particles,...

323. Prospects for SUSY DM after the LHC Run 1 (15' + 5')

Rick Cavanaugh (University of Illinois at Chicago (US))

04/08/2016, 17:20

Beyond the Standard Model

Oral Presentation

We present the prospects for the searches for SUSY and Dark Matter at the LHC, future $e^+e^-$ colliders and direct detection experiments, based on our recent studies: "Supersymmetric Dark Matter after LHC Run 1", Eur.Phys.J. C75 (2015) 500, arXiv:1508.01173 "The pMSSM10 after LHC Run 1", Eur.Phys.J. C75 (2015) 9, 422, arXiv:1505.04702 This talk is submitted on behalf of the MasterCode...

609. Studies of dark sector at Belle & Becays involving tau (15' + 5')

Gianluca Inguglia (DESY)

04/08/2016, 17:40

Beyond the Standard Model

Oral Presentation

The Belle II experiment aims to record 50 ab$^{-1}$ data with the high
luminosity to be provided by the SuperKEKB energy-asymmetric $e^+e^-$
collider. The anticipated high statistics data enables us to perform
studies of $B$ decays involving $\tau$ leptons such as
$B^+ \to \tau^+ \nu_{\tau}$ and $B \to D^{(*)} \tau^+ \nu_{\tau}$ modes.
The precise measurements of branching fraction as...

69. Lepton Jets from Radiating Dark Matter (15' + 5')

Jia Liu (Johannes Gutenberg University Mainz)

04/08/2016, 18:00

Beyond the Standard Model

Oral Presentation

The idea that dark matter forms part of a larger dark sector is very intriguing, given the high degree of complexity of the visible sector. In this paper, we discuss lepton jets as a promising signature of an extended dark sector. As a simple toy model, we consider an O(GeV) DM fermion coupled to a new $U(1)'$ gauge boson (dark photon) with a mass of order GeV and kinetically mixed with the...

1355. A simplified model for dark matter interacting primarily with gluons. (15' + 5')

Gaurav Mendiratta (Indian Institute of Science, Bangalore,India)

04/08/2016, 18:20

Beyond the Standard Model

Oral Presentation

We consider a simple renormalizable model providing a UV completion for dark matter whose interactions with the Standard Model are primarily via the gluons. The model consists of scalar dark matter interacting with scalar colored mediator particles. A novel feature is the fact that (in contrast to more typical models containing scalar dark matter interacting with gluons) the colored scalars...

1389. The TREK-E36 Search for New Physics at J-PARC (15' + 5')

Michael Kohl (Hampton University)

04/08/2016, 18:40

Beyond the Standard Model

Oral Presentation

For the TREK Collaboration The TREK-E36 experiment aims to provide a precision test of lepton universality in the leptonic decay ratio for positive kaons RK = Ke2/Kμ2 = Γ(K+->e+νe)/ Γ(K+->μ+νμ), to search for new physics beyond the Standard Model (SM) . The SM prediction for RK is very precise with an uncertainty of ΔRK/RK = 4 x 10-4. An observed deviation would be an indication of New...

1150. Combined analysis of effective Higgs portal dark matter models (15' + 5')

Prof. Anthony G Williams (CoEPP, University of Adelaide)

05/08/2016, 11:30

Beyond the Standard Model

Oral Presentation

We combine and extend the analyses of effective scalar, vector, Majorana and Dirac fermion Higgs portal models of Dark Matter (DM), in which DM couples to the Standard Model (SM) Higgs boson via an operator of the form DMH†H. For the fermion models, we take an admixture of scalar ψ¯ψ and pseudoscalar ψ¯iγ5ψ interaction terms. For each model, we apply constraints on the parameter space based...

31. Dark photons in the decay of Higgs-like boson (15' + 5')

Dr Gennady Kozlov (JINR)

05/08/2016, 11:50

Beyond the Standard Model

Oral Presentation

We study the dark matter particle, the dark photon (DP), in the decay of the Higgs-like boson. The nature of dark matter is maintained through the hidden sector including the effects of breaking of the scale invariance. The model is based on the additional $U^{\prime}(1)$ gauge group associated with light DP.
The interaction between DP and quarks is mediated by the derivative of the...

569. Search for dark matter in pp collisions with CMS (15' + 5')

Shin-Shan Yu (National Central University (TW))

05/08/2016, 12:10

Beyond the Standard Model

Oral Presentation

Searches in CMS for dark matter in final states with invisible particles recoiling against jets, top/bottom quarks, Ws, Zs, photons are presented. Various topologies are explored, covering several specific dark-matter production modes. The combination in a simplified-model framework of various searches for direct dark matter production with the CMS detector is discussed, highlighting...

867. Search for dark matter in pp collisions at ATLAS (15' + 5')

Steven Randolph Schramm (Universite de Geneve (CH))

05/08/2016, 12:30

Beyond the Standard Model

Oral Presentation

Results of searches for both prompt and non-prompt leptonic decays of new
dark sector particles in proton-proton collisions with the ATLAS detector
at a center-of-mass energy of 13 TeV are presented. Searches that
encompass a wide range of new particle masses, lifetimes and degrees of
collimation of leptonic decay products are discussed. The results are
interpreted in the context of models...

1332. Dark Matter with Flavor Symmetry and its Collider Signature (15' + 5')

Alexander Natale (Korea Institute for Advanced Study)

05/08/2016, 12:50

Beyond the Standard Model

Oral Presentation

The notion that dark matter and standard-model matter are connected through flavor implies a generic collider signature of the type 2 jets+μ±+e∓+missing energy. We discuss the theoretical basis of this proposal and its verifiability at the Large Hadron Collider, with an updated analysis utilizing the 13 TeV LHC.

360. Novel Collider and Dark Matter Phenomenology of a Top-philic Z' (15' + 5')

Dr Anibal Medina (IPhT CEA Saclay)

05/08/2016, 13:10

Beyond the Standard Model

Oral Presentation

We consider extending the Standard Model by including an additional Abelian gauge group broken at low energies under which the right-handed top quark is the only effectively charged Standard Model fermion. The associated gauge boson (Z′) is then naturally top-philic and couples only to the rest of the SM particle content at loop-level or via kinetic mixing with the hypercharge gauge boson...

253. Electroweak scale exotica with LHCb (15' + 5')

Pieter David (Universite Catholique de Louvain (UCL) (BE))

05/08/2016, 14:30

Beyond the Standard Model

Oral Presentation

A flexible trigger system, excellent vertex locator, ring imaging Cherenkov (RICH) detectors, and forward acceptance allow unique exotica measurements to be performed at LHC energies using data collected with the LHCb detector. A summary of results will be presented, including searches for long-lived heavy charged particles, as well as displaced particles decaying into jet pairs.

307. Composite Higgs Models and Lattice Simulations (15' + 5')

Ethan Neil (University of Colorado, Boulder)

05/08/2016, 14:50

Beyond the Standard Model

Oral Presentation

Composite Higgs models imagine a new, strongly-coupled gauge force underlying electroweak symmetry breaking. Although significant insight into these models can be gained using effective theories, lattice calculations offer a unique opportunity to study the underlying strongly-coupled dynamics from first principles. Given an ultraviolet completion of a composite Higgs model, lattice can...

576. Search for new resonances involving Higgs, W or Z boson at CMS (15' + 5')

Salvatore Rappoccio (State University of New York (US))

05/08/2016, 15:10

Beyond the Standard Model

Oral Presentation

Beyond the standard model theories like composite Higgs models predict resonances with large branching fractions in a Higgs boson and a vector boson with negligible branching fractions to light fermions. We present an overview of searches for new physics containing a Higgs boson and a W or Z boson in the final state, using proton-proton collision data collected with the CMS detector at the...

840. Search for new resonances involving a photon, Higgs, W or Z boson n pp collisions at 13 TeV at ATLAS (15' + 5')

Nikos Konstantinidis (University College London (UK))

05/08/2016, 15:30

Beyond the Standard Model

Oral Presentation

Many extensions to the Standard Model predicts new particles decaying
into two massive vector bosons (WW, WZ, ZZ making this a smoking gun
signature. Searches for such diboson resonances have been performed in
final states with different numbers of leptons and jets where new jet
substructure techniques to disentangle the hadronic decay products in
highly boosted configuration are being used. ...

637. Constraining composite Higgs models with direct and indirect searches (15' + 5')

Christoph Niehoff (Excellence Cluster Universe, Munich)

05/08/2016, 15:50

Beyond the Standard Model

Oral Presentation

As a solution to the hierarchy problem the idea of a composite Higgs boson is very appealing. We present comprehensive numerical analyses of realistic four-dimensional models with the Higgs as a composite pseudo-Nambu-Goldstone boson and partial compositeness. These models feature a calculable Higgs potential allowing to calculate the Higgs mass and its vacuum expectation value. Furthermore,...

1617. Limits on the effective quark radius from inclusive ep scattering & contact interactions at HERA (15' + 5')

Aleksander Filip Zarnecki (University of Warsaw)

05/08/2016, 16:10

Beyond the Standard Model

Oral Presentation

The high--precision HERA data allows searches up to TeV scales for Beyond the Standard Model contributions to electron--quark scattering. Combined H1 and ZEUS measurements of the inclusive deep inelastic cross sections in neutral and charged current $ep$ scattering are considered, corresponding to a luminosity of around 1 fb$^{-1}$. A new approach to the beyond the Standard Model analysis of...

849. Search for new physics in dijet and multijet final states with CMS and ATLAS (15' + 5')

Saptaparna Bhattacharya (Northwestern University (US))

05/08/2016, 17:00

Beyond the Standard Model

Oral Presentation

Run 2 of the LHC offers unparallelled potential to discover new physics (NP).
As NP is often considered to couple to the strong force, jet based searches
provide exciting opportunities. The latest ATLAS and CMS search results in inclusive
and heavy-flavour high transverse momentum jet searches will be presented.

856. Search for heavy bosons with dileptons in pp collisions at 13 TeV at ATLAS (15' + 5')

Heberth Jesus Torres Davila (Simon Fraser University (CA))

05/08/2016, 17:20

Beyond the Standard Model

Oral Presentation

A search is conducted for both resonant, and non-resonant new phenomena in
the dilepton final state, using the ATLAS experimental data. Resonance
interpretations are given for a Z' or Graviton, while Contact Interactions
are considered for the non-resonant interpretation, with the dilepton
invariant mass used as the discrimination variable throughout. The full LHC
2015 proton-proton dataset is...

656. The Unitarity Triangle analysis beyond the Standard Model: updates from UTfit (15' + 5')

Marcella Bona (Queen Mary University of London (UK))

05/08/2016, 17:40

Beyond the Standard Model

Oral Presentation

The Unitarity Triangle (UT) analysis can be used to constrain the parameter space in possible new physics (NP) scenarios. We present an update of the UT analysis beyond the SM by the UTfit collaboration. Assuming NP, all of the available experimental and theoretical information on Delta F=2 processes is combined using a model-independent parametrisation. We determine the allowed NP...

580. Search for the production of vector-like quarks at CMS (15' + 5')

Julie Hogan (Brown University (US))

05/08/2016, 18:00

Beyond the Standard Model

Oral Presentation

We present searches for vector-like quarks that only couple to light generation quarks, in LHC proton-proton collisions using the CMS experiment. Vector-like quarks are generally considered to mix significantly only with quarks of the third generation. However, cancellations among different vector-like quark contributions can relax constraints on mixing with lighter generations, leaving room...

844. Search for new quarks with the ATLAS detector (15' + 5')

Georges Azuelos (Universite de Montreal (CA))

05/08/2016, 18:20

Beyond the Standard Model

Oral Presentation

New quarks appear in many beyond the Standard Model trying to cancel the
mass divergence for the Higgs boson. The current status of the ATLAS
searches for single production of such news quarks will be reviewed,
addressing the used analysis techniques, in particular the selection
criteria, the background modelling and the related experimental
uncertainties. The phenomenological implications of...

1449. Little Conformal Symmetry (15' + 5')

Rachel Houtz (UC Davis)

05/08/2016, 18:40

Beyond the Standard Model

Oral Presentation

Given the lack of conventional SUSY signals in the LHC data, a more complicated story may be required to explain weak scale physics. I will present a new class of natural models which ensure the one-loop divergences in the Higgs mass are cancelled. The top-partners that cancel the top loop are new gauge bosons, and the symmetry relation that ensures the cancellation arises at an infrared fixed...

622. BSM physics at CLIC (15' + 5')

Rosa Simoniello (CERN)

06/08/2016, 09:00

Beyond the Standard Model

Oral Presentation

The Compact Linear Collider (CLIC) is an option for a future electron-positron collider operating at centre-of-mass energies from a few hundred GeV up to 3 TeV. The search for phenomena beyond the Standard Model through direct observation of new particles and precision measurements is a main motivation for the high-energy stages of CLIC. An overview of physics benchmark studies assuming...

564. SUSY model and dark matter determination in the compressed-spectrum region at the ILC. (15' + 5')

Mikael Berggren (Deutsches Elektronen-Synchrotron (DE))

06/08/2016, 09:20

Beyond the Standard Model

Oral Presentation

It is an appealing possibility that the observed dark matter density in the universe can be fully explained by SUSY. The current experimental knowledge indicates that this possibility favours a co-annihilation scenario. In such scenarios, the mass difference between the next-to-lightest SUSY particle (the NLSP) and the lightest one (the LSP) is quite small, which assures that the...

921. WIMP Searches at the International Linear Collider (15' + 5')

Moritz Habermehl (Deutsches Elektronen-Synchrotron (DE))

06/08/2016, 09:40

Beyond the Standard Model

Oral Presentation

Weakly Interacting Massive Particles (WIMPs) are among the favored candidates for Dark Matter and can be searched for in dedicated experiments as well as at colliders. WIMP searches at lepton colliders directly probe the WIMPs' coupling to electrons and are thus complementary to both hadron collider searches and direct detection, which rely on the WIMPs' coupling to hadrons. At lepton...

336. Naturalness and light higgsinos: a powerful reason to build ILC (15' + 5')

Howard Baer (University of Oklahoma), Dr Jenny List (DESY)

06/08/2016, 10:00

Beyond the Standard Model

Oral Presentation

A core prediction of natural Supersymmetry is the existence of four light Higgsinos not too far above the mass of the $Z$ boson. The small mass splittings amongst the Higgsinos--typically 5-20 GeV-- implies very little visible energy release from decays of heavier Higgsinos. In particular, if other SUSY particles are quite heavy, as can be the case in SUSY with radiatively-driven...

1163. Discovery potential of a high-luminosity Z, W, Higgs and top factory (15' + 5')

JiJi Fan (Brown University)

06/08/2016, 14:00

Beyond the Standard Model

Oral Presentation

The design study of the Future Circular Colliders at CERN comprises a high-luminosity e+e- storage ring collider (FCC-ee), leading to the observation of 1012/13Z decays, a million tagged Higgs decays at the ZH threshold, and over a million tops around the top-quark pair threshold. Physics beyond the Standard Model can manifest itself by significant deviations in the precision electroweak...

573. Search for new resonances coupling to third generation quarks in pp collisions at 13 TeV at CMS (15' + 5')

Michael Anthony Buttignol (Institut Pluridisciplinaire Hubert Curien (FR))

06/08/2016, 14:20

Beyond the Standard Model

Oral Presentation

We present a search for new massive particles decaying to heavy-flavour quarks with the CMS detector at the LHC. Decay channels to vector-like top partner quarks, such as T', are also considered. This results in a top-pair-like final state, as the T' decays to a W boson and bottom quark; however the reconstructed mass of the T' can be used to further signal discrimination. We use proton-proton...

846. Search for new resonances coupling to third generation quarks in pp collisions at 13 TeV at ATLAS (15' + 5')

Danilo Enoque Ferreira De Lima (Ruprecht-Karls-Universitaet Heidelberg (DE))

06/08/2016, 14:40

Beyond the Standard Model

Oral Presentation

A search for new resonances that decay into top quark pairs and new
resonances that decay into a top quark and a b quark are reported. The
search is performed with the ATLAS experiment at the LHC using
proton-proton collision data collected at a centre-of-mass energy of
$\sqrt{s}=13$ TeV. Both the lepton plus jets channel in the top pair
search and the all hadronic channel are explored in...

838. Search for new physics in multi lepton final states with ATLAS and CMS (15' + 5')

Christos Leonidopoulos (University of Edinburgh (GB))

06/08/2016, 15:00

Beyond the Standard Model

Oral Presentation

Many models of physics beyond the standard model predict events that
contain two or more leptons with or without extra jets, missing energy,
accompanying b-quarks, etc. This talk highlights ATLAS searches targeting
new heavy neutrinos and leptons and multicharge Higgs-like particles in
multilepton final states with the first LHC Run2 Data.

566. Search for leptoquarks and compositeness at CMS (15' + 5')

Seth Cooper (University of Alabama (US))

06/08/2016, 15:20

Beyond the Standard Model

Oral Presentation

Fermion compositeness would give rise to excited states of quarks and leptons. Such states would radiatively decay to standard-model fermions. This talk present searches for such decays, focusing on the recent results obtained using data collected at Run-II of the LHC.

852. Searches for leptoquarks and excited leptons with the ATLAS detector (15' + 5')

Simon Viel (Lawrence Berkeley National Lab. (US))

06/08/2016, 16:15

Beyond the Standard Model

Oral Presentation

Searches for pair-produced first and second generation leptoquarks are presented for final states consisting of either two charged leptons and at least two jets or a charged lepton plus missing transverse momentum and at least two jets. Searches for excited leptons in two lepton plus two jet final states are also shown. The studies reported use data recorded by the ATLAS experiment at...

570. Searches for long-lived particles at CMS (15' + 5')

Jamie Antonelli (The Ohio State University (US))

06/08/2016, 16:35

Beyond the Standard Model

Oral Presentation

Many extensions of the standard model predict new particles with long lifetimes, such that the position of their decay is measurably displaced from their production vertex. We present recent results of searches for exotic long-lived particles obtained using data recorded by the CMS experiment at Run-II of the LHC.

866. Searches for displaced hadronic and lepton jets at ATLAS (10' + 2')

Edward Moyse (University of Massachusetts (US))

06/08/2016, 16:55

Beyond the Standard Model

Oral Presentation

Results of searches for long-lived particles that decay to either pairs of
hadronic jets or clusters of variously displaced hadronic vertices
(emerging jets) in proton-proton collisions with the ATLAS detector at a
center-of-mass energy of 13 TeV are presented. The results are interpreted
in the context of several models, including hidden valleys with high-mass
scalars, baryogenesis models,...

1003. Search for heavy bosons and lepton flavour violation with dileptons with CMS (15' + 5')

Hwi Dong Yoo (Seoul National University (KR))

06/08/2016, 17:07

Beyond the Standard Model

Oral Presentation

Numerous new physics models, e.g., theories with extra dimensions and various gauge-group extensions of the standard model, predict the existence of heavy resonances decaying to final states containing leptons. This talk presents searches for new physics in the dilepton, lepton+MET, and Z(ll)gamma final states at CMS, focusing on the recent results obtained using data collected during the...

865. Search for strong gravity and anomalously charged objects with the ATLAS detector (15' + 5')

Christopher Lester (University of Cambridge (GB))

06/08/2016, 17:27

Beyond the Standard Model

Oral Presentation

Results of searches for particles with anomalously high or fractional
electric charge produced in proton-proton collisions in the ATLAS detector
at a center-of-mass energy of 13 TeV are presented. Such signatures,
encompassing particles with charges from 2 to 60 times the electron charge,
involve high levels of ionization in the ATLAS detector and can arise from
magnetic monopoles or models...

864. Searches for long lived SUSY particles (10' + 2')

Laura Jeanty (Lawrence Berkeley National Lab. (US))

06/08/2016, 17:47

Beyond the Standard Model

Oral Presentation

Several supersymmetric models predict massive long-lived supersymmetric particles with lifetimes from fractions of a nanosecond to lifetimes that are effectively stable in the detector. Such particles may be detected through abnormal specific energy loss, disappearing tracks, displaced vertices, long time-of-flight or late calorimetric energy deposits. The talk presents recent results from...