Conveners
Beyond Standard Model: Monday morning
- Christopher Hill (The Ohio State University)
Beyond Standard Model: Monday afternoon
- Bjoern Penning (Fermilab/UChicago)
Beyond Standard Model: Tuesday morning
- Howard Baer (University of Oklahoma)
Beyond Standard Model: Tuesday afternoon
- Robin Erbacher Erbacher (UC Davis)
Beyond Standard Model: Wednesday morning
- Patrick Fox (Fermilab)
Beyond Standard Model: Wednesday afternoon
- Kevin Burkett (Fermilab)
Beyond Standard Model: Thursday morning
- Roni Harnik (FNAL)
Beyond Standard Model: Joint with Higgs, Thursday morning
- Gordon Watts (University of Washington)
Beyond Standard Model: Thursday afternoon
- Patrick Fox (Fermilab)
Dr
Keisuke Yoshihara
(University of Pennsylvania)
31/07/2017, 10:45
Beyond Standard Model
Presentation
Two of the most important parameters in supersymmetry are the masses of the stop and sbottom, the supersymmetric partners of the third generation quarks. A stop mass lighter than 1 TeV is favored in theory, however experimental evidence for a light stop has not been indicated from the various searches at the LHC so far. Therefore, it is very important to extend the searches to various pMSSM...
Nathaniel Pastika
(Baylor University)
31/07/2017, 11:01
Beyond Standard Model
Presentation
Results for searches for supersymmetry targeting top squarks and gluions will be presented in this talk. The analysis is optimized to specifically target top squark pair production and more generic supersymmetry signals with tops in the final state, including gluino pair production. These searches employ methods of tagging top quarks in the final state to reject standard model background in...
Kevin Pedro
(Fermilab)
31/07/2017, 11:13
Beyond Standard Model
Presentation
A search for supersymmetry is presented based on multijet events with large missing transverse momentum produced in proton-proton collisions at center-of-mass energy sqrt(s) = 13 TeV. The data, corresponding to an integrated luminosity of 35.9 fb-1, were collected with the CMS detector at the CERN LHC in 2016. The analysis utilizes four-dimensional exclusive search regions defined in terms of...
Giordon Stark
(University of Chicago)
31/07/2017, 11:29
Beyond Standard Model
Presentation
A search for supersymmetry involving the pair production of gluinos decaying via third-generation squarks to the lightest neutralino (χ̃ 10) is reported. It uses LHC proton-proton collision data at a center-of-mass energy s√=13 TeV, corresponding to an integrated luminosity of 36 ifb collected with the ATLAS detector in 2015 and 2016. The search is performed in events containing large missing...
Mr
David Bartlett
(University of Colorado at Boulder)
31/07/2017, 11:41
Beyond Standard Model
Presentation
Revisiting Dyons in Particle Physics
Schwinger’s dyon is a bound system of a magnetic monopole and an electric charge. Suppose a monopole (B=g/r2) is a distance zo above an electric charge (E= q/r2). Then (in gaussian units) this system stores an angular momentum about the z-axis of L = qg/8πc regardless of the magnitude of zo. Schwinger proposed that all hadronic matter is composed of...
Frank Jensen
(University of Colorado)
31/07/2017, 11:53
Beyond Standard Model
Presentation
CMS results at 8 and 13 TeV have placed bounds on gluino, squark, and electroweakino production in supersymmetric extensions to the Standard Model. The current sensitivity in some regions of phase space motivates more targeted searches. Depending on the mass spectra of the new particles, these models predict boosted objects, such as high pT vector bosons, in association with missing energy...
Mr
Basil Schneider
(FNAL)
31/07/2017, 13:30
Beyond Standard Model
Presentation
In supersymmetry, most solutions to the hierarchy problem feature light higgsinos, since it is the most important ingredient to stabilize the Standard Model higgs mass. Light higgsinos, however, are notoriously difficult to detect. This talk will outline the challenges of finding higgsinos and present various search results and techniques, that focus on supersymmetric models where colored...
Joseph Reichert
(University of Pennsylvania)
31/07/2017, 13:46
Beyond Standard Model
Presentation
A search is presented for the electroweak production
of gauginos, the supersymmetric partners of the Standard Model gauge bosons,
in a scenario where the mass difference between the lightest supersymmetric
particle (LSP) and other light gauginos is small, resulting in decays
to virtual W/Z bosons and the LSP.
The search is based on 36 fb^-1 of sqrt(s) = 13 TeV data collected
by the ATLAS...
Elodie Resseguie
(University of Pennsylvania)
31/07/2017, 13:58
Beyond Standard Model
Presentation
Supersymmetry gives a solution to naturalness as well as a candidate for dark matter by predicting a new bosonic (fermionic) partner for each Standard Model fermion (boson). Searches for electroweak production of supersymmetric particles decaying via sleptons and gauge bosons, $W$ and $Z$, to final states with two or three leptons and missing transverse momentum were performed with the ATLAS...
Dr
William Shepherd
(JGU Mainz)
31/07/2017, 14:14
Beyond Standard Model
Presentation
I will present partial one-loop corrections to SM EFT parameterizations of new physics effects on Z boson decays, and discuss the impact of LEP I data on SM EFT fits. The findings indicate that any measurement which reaches percent-level sensitivity to new physics effects in Z decays, like the precise LEP data, cannot be consistently used at higher precision to reach fixed conclusions on...
Prof.
Radovan Dermisek
(Indiana University)
31/07/2017, 14:30
Beyond Standard Model
Presentation
We study constrained versions of the minimal supersymmetric model and investigate the hierarchy between the electroweak scale and the scale of superpartners that can be achieved without relying on specifying model parameters by more than one digit. This approach automatically avoids scenarios in which a large hierarchy is obtained by special choices of parameters and yet keeps scenarios that...
Mr
Joydeep Roy
(Wayne state University)
31/07/2017, 14:46
Beyond Standard Model
Presentation
Combining anomaly with Z' mediation of SUSY breaking allows us to solve the
tachyonic problem of the former and avoid fine tuning in the latter. This scenario
includes an extra U(1)' gauge symmetry and extra singlet scalar S which provides a
solution to the ‘µ problem’ of the MSSM. The low-energy particle spectrum is calculated
from the UV inputs using the Renormalization Group Equations....
Yannick Meurice
(U. of Iowa)
31/07/2017, 15:01
Beyond Standard Model
Presentation
It is expected that when the number of light flavors of QCD-like theories is increased beyond some critical
value, a transition having some Kosterlitz-Thouless features occurs. We report numerical results for a four-dimensional
SU(3) lattice gauge theory with 12 flavors of unimproved staggered fermions. We show that the scaling of the
imaginary part of the zeros of the partition function...
Dr
Venkitesh Ayyar
(University of Colorado, Boulder)
01/08/2017, 10:45
Beyond Standard Model
Presentation
We study the spectroscopy of an SU(4) gauge theory with dynamical fermions in both the fundamental and the two-index antisymmetric representations.
Such theories are of interest in the study of Physics Beyond the Standard Model, specifically in the context of partial compositeness. We discuss the spectrum of this theory and its implications.
Daniel Hackett
(University of Colorado, Boulder)
01/08/2017, 11:01
Beyond Standard Model
Presentation
We study the phase structure of SU(4) gauge theory with dynamical quarks in both the fundamental and two-index antisymmetric representations. Such "multi-representation" theories have been speculated to exhibit separated phase transitions, but our lattice calculations suggest the existence of only a single thermal phase transition: both species of fermion appear to confine and break chiral...
Dr
Anthony Barker
(Purdue University)
01/08/2017, 11:17
Beyond Standard Model
Presentation
We present a search for the pair-production of a vector-like top quark partner T of charge + 2/3, using proton-proton collision data at √s=13 TeV collected by the CMS Experiment in 2016 at the CERN LHC. Our search targets T quarks decays to final states with two light charged leptons, b-jets, and multiple light flavored jets. Both same-sign and opposite sign di-lepton channels are considered.
Mr
Rachitha Mendis
(Kansas State University)
01/08/2017, 11:33
Beyond Standard Model
Presentation
We Present results of the search for pair produced Vector-like T quark using the proton-proton Collison data collected by the CMS experiment in 2016 with integrated luminosity of 35.9 /fb at a centre-of-mass energy of 13 TeV . Vector-like quarks appear in several extensions of the standard model, and can cancel the diverging loop corrections to the Higgs mass, and thus stabilize it at the...
Mr
Rizki Syarif
(Brown University)
01/08/2017, 11:45
Beyond Standard Model
Presentation
A search is presented for pair production of heavy vector-like T quarks using proton- proton collisions were collected by the CMS experiment at the CERN LHC in 2016 with an integrated luminosity of 35.9 fb−1. A vector-like T quark of charge 2e/3 is predicted to decay to bW, tZ, and tH, so pair production of T quarks yields a wide array of final states. This inclusive search is performed in...
Tyler Mitchell
(Kansas State University)
01/08/2017, 11:57
Beyond Standard Model
Presentation
We present the results of searches for pair-produced vector-like B quarks using proton-proton collision data collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV. The searches are performed using opposite sign dileptons from a Z boson decay. Vector-like quarks, having symmetric interactions in the weak sector of the Standard Model (SM), are postulated as an...
Prof.
Joseph Haley
(Oklahoma State University)
01/08/2017, 13:30
Beyond Standard Model
Presentation
This talk will present a search for the pair production of heavy vector-like $T$ and $B$ quarks, primarily targeting $T$ quark decays to a $W$ boson and a $b$ quark. The search is based on 36 fb$^{−1 }$ of $pp$ collisions at $\sqrt{s} = 13$ TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. Data are analyzed in the lepton plus jets final state, including...
Erich Schmitz
(University of Kansas)
01/08/2017, 13:46
Beyond Standard Model
Presentation
We present a search for the electroweak production of a vector-like top quark partner T of charge + 2/3 in association with a standard model top or bottom quark, using proton-proton collision data at √s=13 TeV collected by the CMS Experiment at the CERN LHC. Our search targets T quarks decaying to a top quark and a Higgs or Z boson in a fully hadronic final state. For a T quark with mass above...
Laser Kaplan
(University of Wisconsin-Madison)
01/08/2017, 14:02
Beyond Standard Model
Presentation
A search for low mass resonances decaying to a jet pair in association with an ISR jet or photon in the context of a dark matter mediator. The ISR object acts as the event trigger, and the resonance jet pair is subsequently boosted and reconstructed as a large-radius jet. Novel jet substructure techniques allow for signal jets to be selected over the dominant QCD background. The search uses 36...
Cristina Ana Mantilla Suarez
(Fermilab)
01/08/2017, 14:18
Beyond Standard Model
Presentation
We perform a search for light generic dijet resonances produced in association with a high transverse momentum jet to get above trigger thresholds. It uses novel jet substructure observables to identify the Z' signal. The signal is then extracted on top of a falling QCD soft drop mass distribution estimated with a novel data-driven technique. Results are presented in a mass-coupling phase...
Alejandro Gomez Espinosa
(Rutgers, The State University of New Jersey)
01/08/2017, 14:30
Beyond Standard Model
Presentation
We present a search for paired dijet resonances using data from proton-proton collisions at a center-of-mass energy of 13 TeV, recorded in 2016 by the CMS detector at the LHC. We exploit jet substructure techniques to reach low mass boosted paired dijet resonances, while for higher resonance masses we search for four jets in the final state. We consider the pair production of top squarks...
Norbert Neumeister
(Purdue University)
01/08/2017, 14:46
Beyond Standard Model
Presentation
Many new physics models beyond the Standard Model predict the existence of narrow or broad resonances decaying to a pair of quarks/gluons, leptons, or photons. At the LHC, the production of heavy resonances decaying into a pair of particles can be probed at unprecedented centre-of-mass energies. This talk presents CMS searches for new resonances in the diet, dilepton, diphoton, and other final...
Mr
Manuel Silva
(University of Wisconsin, Madison)
01/08/2017, 15:02
Beyond Standard Model
Presentation
A search for heavy resonances decaying into two photons in the ATLAS experiment is presented. The analysis uses proton-proton collision data accumulated at the Large Hadron Collider during 2015 and 2016 with a corresponding luminosity of 36.7 fb^{-1} at 13 TeV. Two searches are shown, a search for spin-0 particles using a heavy Higgs-like particle as a benchmark model, and a search for spin-2...
Mr
Douglas Berry
(University of Illinois at Chicago)
02/08/2017, 10:45
Beyond Standard Model
Presentation
A search for new heavy resonances decaying into top-antitop quark pairs is performed using proton-proton collisions at a center of mass energy of 13 TeV. The full dataset recorded in 2016 with the CMS detector corresponds to an integrated luminosity of 35.9 fb^{-1}. We consider only events containing one muon or one electron, at least two jets in the final state, and missing transverse energy....
Jingyu Zhang
(University of Illinois Chicago)
02/08/2017, 11:00
Beyond Standard Model
Presentation
A search for new physics using measurements of dijet angular distributions in proton-proton collisions at $\sqrt{s} = 13$~TeV is presented. The data collected with the CMS detector at the CERN LHC correspond to an integrated luminosity of 36.5 $\rm fb^{-1}$. The distributions are unfolded for detector effects and are compared with predictions from perturbative quantum chromodynamics that...
Mr
Shawn Zaleski
(Wayne State University)
02/08/2017, 11:15
Beyond Standard Model
Presentation
We report results on the nonresonant search for contact interactions (CI) sqrt(s) using data collected during the 2016 run, in proton-proton collisions at sqrt(s) = 13 TeV by the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) at CERN. The analyzed data correspond to integrated luminosities of about 36 fb −1 . Results are interpreted in the context of left-left (LL),...
Leigh Schaefer
(University of Pennsylvania)
02/08/2017, 11:30
Beyond Standard Model
Presentation
A search is presented for the direct pair production of scalar tops, which decay through an R-parity-violating coupling to a final state with two leptons and two jets, at least one of which is identified as a b-jet. The dataset consists of an integrated luminosity of 36 fb−1 of proton-proton collisions at a center-of-mass energy of √s=13 TeV, collected over 2015 and 2016 by the ATLAS detector...
Maximilian Heindl
(Rutgers University)
02/08/2017, 11:45
Beyond Standard Model
Presentation
A search for a type-III seesaw signal in events with three or more electrons or muons is presented. The data sample corresponds to 35.9 fb−1 of integrated luminosity in pp collisions at 13 TeV collected by the CMS experiment at the LHC in 2016. The signal is sought after in final states with at least three leptons, and has diverse kinematic properties. The primary selection is based on the...
Prof.
Elizabeth Simmons
(Michigan State University)
02/08/2017, 12:00
Beyond Standard Model
Presentation
When an excess appears in LHC data, we should compare the results with broad classes of models, to get an immediate sense of which kinds of BSM theories could conceivably be relevant. Often, the new physics is likely to be an s-channel resonance. In this case, a simplified model of the resonance can translate an estimated signal cross section into bounds on the product of the dominant...
Dr
Debtosh Chowdhury
(INFN, Rome1)
02/08/2017, 13:30
Beyond Standard Model
Presentation
ATLAS and CMS collaborations have reported the new results on Higgs search analyzing data from run II of LHC at 13 TeV. In this work we study the Higgs sector of the phenomenological Minimal Supersymmetric Standard Model, in the light of the new Higgs data presented at ICHEP 2016, on and above the existing Run-I data, and comment on their relative impacts. One of the major impact of the new...
Mr
Tony Tong
(Harvard University)
02/08/2017, 13:48
Beyond Standard Model
Presentation
An enhanced production of double Higgs bosons would be a clear sign of beyond Standard Model physics. A search is performed for resonant and non-resonant excess production, where the two Higgs bosons both decay to a pair of bottom quarks. The analyses use up to 36 fb$^{−1}$ of p-p collision data collected by the ATLAS detector at 13 TeV.
Mr
Blake Burghgrave
(Northern Illinois University)
02/08/2017, 14:06
Beyond Standard Model
Presentation
The experimental observation of charged Higgs bosons, whose existence is predicted by several models with an extended Higgs sector, would be an unambiguous signal for physics beyond the Standard Model (SM). We present the results from a search for charged Higgs bosons in 36/fb of pp collision data at 13 TeV recorded by the ATLAS experiment at the Large Hadron Collider. The search focuses on...
Philip Ilten
(Massachusetts Institute of Technology)
02/08/2017, 14:24
Beyond Standard Model
Presentation
A flexible trigger system, excellent vertex locator, particle identification 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 particles decaying into jet pairs or semileptonically.
Prof.
Todd Adams
(Florida State University)
02/08/2017, 14:42
Beyond Standard Model
Presentation
We present results of searches for new physics using long-lived particles using data recorded by CMS during Run-II of the LHC. Searches include long-lived charged particles and highly displaced decays. These searches are sensitive to numerous beyond the standard model theories and greatly expand the discovery potential of the LHC.
Gabriel Santucci
(Stony Brook University)
03/08/2017, 10:45
Beyond Standard Model
Presentation
The Standard Model of particle physics describes the strong and electroweak interactions among all known elementary particles. Despite its great success to explain many experimental results, it does not address the unification of these forces. Grand Unified Theories (GUTs) attempt to unify these forces by embedding the SM group into a larger gauge group. Typical grand unification energies are...
Michael Krohn
(University of Colorado Boulder)
03/08/2017, 10:45
Beyond Standard Model
Presentation
This talk gives an overview of the searches for new heavy resonances decaying to standard model bosons at the TeV mass scale. Results are based on data corresponding to an integrated luminosity up to about 36 inverse femtobarns recorded in proton-proton collisions at s=13 TeV with the CMS detector at the CERN LHC. The bosons coming from the resonance decay can be W, Z, or the standard model...
Ines Ochoa
(Columbia University)
03/08/2017, 11:01
Beyond Standard Model
Presentation
The discovery of the Higgs boson by the ATLAS and CMS experiments at the LHC has led to a new set of questions regarding the completeness of the Standard Model (SM). Many different theoretical scenarios have been proposed to alleviate the fine-tuning of the SM required by the measured value of the Higgs boson mass by introducing new physics at the TeV scale, within reach of the LHC. Many of...
Mr
Joshua Barrow
(The University of Tennessee)
03/08/2017, 11:01
Beyond Standard Model
Presentation
Babu et al. have recently proposed a model of post-sphaleron baryogenesis following the electroweak phase transition. Their theory naturally gives rise to a plausible baryon abundance and a ΔB=2 six-quark operator which allows for the generation of nbar from n.
Using n bound in Ar, DUNE currently plans to include n-nbar events in their nucleon decay searches. Using GENIE, modeling is underway...
Mr
Yanchu Wang
(University of Virginia)
03/08/2017, 11:13
Beyond Standard Model
Presentation
We report on searches for new heavy resonances decaying to a pair of standard model (SM) bosons where the final states contain significant missing energy due to the presence of undetected neutrinos. The results are based on data collected by the CMS detector at the CERN LHC corresponding to approximately 36 inverse femtobarns of proton-proton collisions at sqrt{s}=13 TeV and extend previous...
Enhao Song
(University of Virginia)
03/08/2017, 11:17
Beyond Standard Model
Presentation
The NOνA experiment is studying a variety of neutrino properties using a long-baseline neutrino beam and near and far detectors. Due to its surface proximity and large area the NOνA far detector is particularly sensitive to a large range of magnetic monopole masses and energies. The monopole trigger, like all NOvA data-driven triggers, is software only using data collected and sent to a farm...
Mr
Wei Tang
(Duke University)
03/08/2017, 11:25
Beyond Standard Model
Presentation
Results are presented from searches for massive boson resonances with decay modes $X\to$ $Z\gamma$ and $X^{\pm}\to$ $W^{\pm}\gamma$ using 13 TeV proton-proton collision data collected by the ATLAS detector at the LHC in 2015 and 2016. For the $Z\gamma$ channel, a high $E_T$ lepton trigger selects events where the Z boson is detected from decays to $e^+e^-$ and $\mu^+\mu^-$. These data are...
Ms
Sonaina Undleeb
(Texas Tech University)
03/08/2017, 11:33
Beyond Standard Model
Presentation
We will present a search for dark matter in events with one or more jets and large missing transverse energy using proton-proton collisions at center-of-mass energy of 13 TeV. The data was collected in 2016 by the CMS detector at the LHC correspond to an integrated luminosity of 35.9 fb-1. The results are interpreted in terms of well known LED ADD model and new models, Fermion Portal and...
Mr
Felix Kling
(Arizona / Fermilab)
03/08/2017, 11:41
Beyond Standard Model
Presentation
New physics has traditionally be sought in the high transverse momentum region at high-energy collider experiments. We show that, if the new physics is light and weakly-coupled, the very forward region also provides a promising location for new particle searches. Given an integrated luminosity of 300 fb$^{-1}$, $10^{16}$ light mesons are produced at ATLAS and CMS within 1 mrad of the beamline,...
Prof.
P.Q. Hung
(University of Virginia)
03/08/2017, 11:49
Beyond Standard Model
Presentation
A new solution to the strong CP problem with distinct experimental signatures at the LHC is proposed. It is based on the Yukawa interactions between mirror quarks, Standard Model (SM) quarks and Higgs singlets. (Mirror quarks and leptons which include non-sterile right-handed neutrinos whose Majorana masses are proportional to the electroweak scale, form the basis of the EW-$\nu_R$ model.) The...
Prajwal Mohanmurthy
(Massachusetts Institute of Technology)
03/08/2017, 13:30
Beyond Standard Model
Presentation
Compton scattering has been shown to be very sensitive to the speed of light measured \emph{w.r.t.} to electrons in Compton scattering process [1]. For photons of energies in the range $9-46$ MeV and a $1.16$ GeV electron beam, a constraint on vacuum refractive index, $(n-1) < 1.4 \times 10^{-8}$ was imposed using the Compton polarimeter at Hall - C of Jefferson Lab (JLab). Constancy and...
Prof.
Corrado Gatto
(INFN and NIU)
03/08/2017, 13:46
Beyond Standard Model
Presentation
The $\eta$ meson is almost unique in the particle universe since it is
a Goldstone boson and the dynamics of its decay are strongly constrained.
Because the eta has no charge, decays that violate conservation laws can occur
without interfering with a corresponding current. The integrated eta meson
samples collected in earlier experiments have been about ~$10^9$ events, dominated by...
Ms
Nafisa Tasneem
(University of Victoria)
03/08/2017, 14:02
Beyond Standard Model
Presentation
Charged lepton flavor violating processes are unobservable in the standard model,
but they are predicted to be enhanced in several new physics extensions.
Data collected with the BaBar detector at the SLAC PEP-II $e^+e^-$ collider
at a center-of-mass energy of 10.36~GeV were used to search for electron-muon
flavor violation in $\Upsilon(3{\mathrm{S}}) \to e^{\pm}\mu^{\mp}$ decays.
The...
Dr
Leah Broussard
(Oak Ridge National Laboratory)
03/08/2017, 14:18
Beyond Standard Model
Presentation
The theory of ``mirror matter'' predicts a hidden sector made up of a copy of the Standard Model particles and interactions but with opposite Parity. If mirror matter interacts with ordinary matter, there would be experimentally accessible implications in the form of neutral particle oscillations. Direct searches for neutron oscillations into mirror neutrons in a controlled magnetic field have...
Prof.
Pinfold James
(University of ALberta)
03/08/2017, 14:34
Beyond Standard Model
Presentation
MoEDAL is a pioneering experiment designed to search for highly ionising messengers of new physics such as magnetic monopoles or massive (pseudo-)stable charged particles, that are predicted to existing a plethora of models beyond the Standard Model. It started data taking at the LHC at a centre-of-mass energy of 13 TeV, in 2015. Its ground breaking physics program defines a number of...
Kiel Howe
(Fermilab)
03/08/2017, 14:50
Beyond Standard Model
Presentation
We describe new solutions to the strong CP problem obtained by embedding the Standard Model QCD in a strongly coupled SU(3)xSU(3) or SU(3)xSU(3)xSU(3) product gauge group at high energies, without requiring any discrete symmetries or mirror partners of the SM matter in the extra SU(3) sectors. In one family of solutions, the strong CP problem is solved by axions obtaining masses parametrically...
Dr
Alfredo Aranda
(Universidad de Colima (Mexico))
03/08/2017, 15:02
Beyond Standard Model
Presentation
An introduction to the concept of generalized CP symmetry will be reviewed within the context of a three Higgs doublet model that exhibits interesting CP properties, such as the presence of so-called "half-CP-odd" scalars. Including fermions in the setup yields interesting phenomenological consequences. Progress in this direction will be presented.