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Jonathan Lee Feng (University of California Irvine (US))09/11/2020, 16:00
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Jonathan Gall (CERN)09/11/2020, 16:20
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Jamie Boyd (CERN)09/11/2020, 16:45
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Ahmed Ismail09/11/2020, 17:20
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Brian Petersen (CERN)09/11/2020, 17:40
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Dr Akitaka Ariga (Universitaet Bern (CH))09/11/2020, 18:00
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Giovanni De Lellis (Universita e sezione INFN di Napoli (IT))09/11/2020, 18:20
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Chris Hill (Ohio State University (US))09/11/2020, 18:40
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Dr Yu-Dai Tsai (Fermilab)09/11/2020, 19:10
We identify potentially the world's most sensitive location to search for millicharged particles in the 10 MeV to 100 GeV mass range: the forward region at the LHC. We propose constructing a scintillator-based experiment, FORward MicrOcharge SeArch (FORMOSA) in this location, and estimate the corresponding sensitivity projection. We show that FORMOSA can discover millicharged particles in a...
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Herbi Dreiner (Bonn University)09/11/2020, 19:10
We have investigated the search sensitivity to long lived light neutralinos, with masses below a few GeV down to 10s of MeV, at various forward detectors. The can be produced at the LHC via rare decays of standard mesons or via rare Z-boson decays. The neutralinos decay to a lighter meson plus a charged lepton, which can be observed. We have studied a large set of proposed experiments: ANUBIS;...
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Roshan Mammen Abraham (Oklahoma State University)09/11/2020, 19:10
Charged current neutrino interactions have been extensively studied in the context of various experiments, including FASER$\nu$. The presence of a charged lepton in the final state allows for easy identification of candidate signal events and incoming beam energy reconstruction. Neutral current neutrino interaction on the other hand have a neutrino in the final state. This imposes two...
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Osamu Sato (Nagoya University (JP))09/11/2020, 19:25
Tau neutrino is the least known particle of the Standard Model, first discovered by DONUT experiment in 2001. In DONUT, using tau neutrino interaction cross section was measured with large systematical (~50%) and statistical (~30%) errors. The main source of systematical error is due to a poor knowledge of the tau neutrino flux from Ds decays. The DsTau experiment at CERN-SPS has been...
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Patrick Foldenauer09/11/2020, 19:25
Extensions of the Standard Model with an abelian gauge group are constrained by gauge anomaly cancellation, fermion masses and mixing angles. These constraints only allow for a limited number of $U(1)_X$ groups. We categorise these extensions and determine the allowed textures of Yukawa and Majorana mass matrices. If neutrinos are Dirac, the only possible choice satisfying all conditions is...
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Mr Saeid Foroughi (University of Victoria)09/11/2020, 19:25
In this talk, I will present some additional physics potential of FORMOSA, that not only provides leading sensitivity to MCPs but also is extremely sensitive to other forms of exotica beyond the standard model (BSM), such as heavy neutrinos and DM with a large electric dipole moment (EDM). Furthermore, we expect a sizable number of interactions of TeV-energy neutrinos in FORMOSA, providing...
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Brian Thomas Batell09/11/2020, 19:40
Light sub-GeV dark matter particles interacting through a kinetically mixed dark photon may be copiously produced in the far-forward region at the LHC. These dark matter particles may then be detected through their scattering off electrons. We show that thousands of scattering events may be detected in the HL-LHC era by a 10-ton emulsion detector placed on the beam collision axis 500 m ...
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Sumit Ghosh (Texas A & M University)09/11/2020, 19:40
We consider strategies for using new datasets to probe
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scenarios in which light right-handed SM fermions couple
to a new gauge group, $U(1)_{T3R}$. This scenario
provides a natural explanation for the light flavor
sector scale, and a motivation for sub-GeV dark matter.
There is parameter space which is currently allowed, but
we find that much of it can be probed... -
Dr Weidong Bai (University of Iowa)09/11/2020, 19:40
We calculate the prompt muon and tau neutrino (and antineutrino) number of events in the far forward region at the LHC. In a region as such, the heavy quark decay dominates the tau neutrino production. The hadronic charm and bottom hadron production cross section is evaluated at the next-to-leading order in perturbative QCD. The intrinsic transverse momentum of the initial partons becomes...
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Takashi Shimomura (University of Miyazaki), Takashi Shimomura (University of Valencia), Takashi Shimomura09/11/2020, 19:55
FASER is one of the promising experiments which search for long-lived particles in beyond standard models.
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In this paper, we focus on dark photon associating with an additional U(1) gauge symmetry, and also a scalar boson
breaking this U(1) gauge symmetry.
We study the sensitivity to the dark photon originated from U(1)-breaking scalar decays.
We find that sizable number of the dark... -
Krzysztof Jodlowski (National Centre for Nuclear Research)09/11/2020, 19:55
One of the primary aims of the Forward Physics Facility (FPF) would be to search for highly-displaced decays of light and long-lived particles (LLPs) produced in proton-proton collisions at the LHC. These searches are, however, limited to new particles with decay lengths similar to or larger than the baseline of the FPF. We will discuss how this basic constraint can be overcome in models that...
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Yu Seon Jeong (University of Iowa (US))09/11/2020, 19:55
In the very forward region of the LHC, a number of tau neutrinos can be produced mostly from the $D_s^\pm$ decay. For an integrated luminosity of 3000 $\rm fb^{-1}$ at the HL-LHC, thousands of charged current tau neutrino events are expected in a detector of $\rm m^3$ size. It will allow the study of the mixing between sterile neutrinos and tau neutrinos with the fact that the possible...
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Dipan Sengupta (UC San Diego)09/11/2020, 20:10
We propose simple freeze-in models where the observed dark matter abundance is explained via the decay of an electrically charged and/or coloured parent particle into Feebly Interacting Massive Particles (FIMP). The parent particle is long-lived and yields a wide variety of LHC signatures depending on its lifetime and quantum numbers. We assess the current constraints and future high...
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Prof. Yasaman Farzan (IPM)09/11/2020, 20:10
The FASER$\nu$ detector is a newly proposed detector whose main mission is to detect neutrino flux from the collision of the proton beams at the ATLAS Interaction Point (IP) during run III of the LHC in 2021-2023. We show that this detector can also test certain beyond standard model scenarios, especially the ones in which the neutrino interaction with matter fields can produce new unstable...
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Shuailong Li09/11/2020, 20:10
Two Higgs Doublet Model (2HDM) offers a prototype for models with an extended Higgs sector beyond that of the Standard Model. It provides a rich spectrum of scalars, some of them can be relatively light with relatively weak couplings. Complementary to the usual searches for extra scalars at high energy colliders, FASER offers a unique opportunity to study those relatively long lived light...
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Nobuchika Okada (University of Alabama)09/11/2020, 20:25
In the context of a well-motivated gauged U(1) extension of the Standard Model, we introduce a non-thermal dark matter whose interaction is too weak to allow it to be in thermal equilibrium with the Standard Model particles, and its relic density is determined by the freeze-in mechanism through a light mediator that is the extra U(1) gauge boson. We discuss a complementarity between the...
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Sebastian Trojanowski09/11/2020, 20:25
Muons produced at the LHC are the only Standard Model species besides neutrinos that can reach in large numbers the Forward Physics Facility. A combination of their typical high energy and very precise experimental tools to study their flux and interactions will open up a possibility for new exciting searches in this unique low-background environment. In the talk, we will mention a few such...
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Guanghui Zhou (University of Massachusetts Amherst)09/11/2020, 20:25
We study the prospects of a displaced-vertex search of sterile neutrinos at the Large Hadron Collider (LHC) in the framework of the neutrino-extended Standard Model Effective Field Theory. The production and decay of sterile neutrinos can proceed via the standard active-sterile neutrino mixing in the weak current, as well as via higher-dimensional operators arising from potentially new,...
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Dr Digesh Raut (University of Delaware)09/11/2020, 20:40
We consider the nonminimal quartic inflation in a classically conformal U(1)$_X$ extended SM. We show that if the inflaton mass and its mixing angle with the SM Higgs field lie in a suitable range, the FASER experiment can search for the inflaton at the High Luminosity (HL)-LHC. Also because of the classical conformal invariance, the inflationary predictions and the LHC search for the U(1)$_X$...
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Grigorios Chachamis (LIP, Lisbon)09/11/2020, 20:40
We give a short review of recent Mueller-Navelet jets studies at the LHC and we propose new related observables to be used as probes of the BFKL dynamics.
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Yongsoo Jho09/11/2020, 20:40
We investigate features of the sterile neutrinos in the presence of a light gauge boson $X$ that couples to the neutrino sector. The novel bounds on the active-sterile neutrino mixings $| U_{\ell 4} |^2$, especially for muon and tau flavors ($l = \mu, \tau$), from various collider and fixed target experiments in intensity frontiers are explored. Also, taking into account the additional decay...
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Dr juan carlos Helo (Universidad de La Serena)09/11/2020, 20:55
In this talk I will discuss the connection of different neutrino mass models with long-lived particles (LLPs). We will also discuss the prospects of the LHC and several recent experimental proposals to search for these LLPs.
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Dr Hans Peter Dembinski (TU Dortmund)09/11/2020, 20:55
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Pavel Nadolsky (Southern Methodist University)10/11/2020, 16:00
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Maria Vittoria Garzelli10/11/2020, 16:20
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Dr Grigorios Chachamis (LIP, Lisbon)10/11/2020, 16:40
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Torbjorn Sjostrand (Lund University (SE))10/11/2020, 17:00
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Frank Martin Krauss (University of Durham (GB))10/11/2020, 17:20
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Dr Holger Schulz (University of Durham)10/11/2020, 17:40
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Sergey Ostapchenko (Frankfurt Institute for Advanced Studies (FIAS))10/11/2020, 18:00
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Dr Tanguy Pierog (KIT)10/11/2020, 18:20
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Ralph Richard Engel (KIT - Karlsruhe Institute of Technology (DE))10/11/2020, 18:40
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Francis Halzen (University of Wisconsin)10/11/2020, 19:00
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Dennis Soldin (University of Wuppertal)10/11/2020, 19:20
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Mary Hall Reno10/11/2020, 19:40
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Felix Kling (SLAC)10/11/2020, 20:00
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Felix Kling (SLAC)
The tau neutrino is probably the least studied particle in the SM, with only a handful of interaction events being identified so far. This can in part be attributed to their small production rate in the SM, which occurs mainly through D_s meson decay. However, this also makes the tau neutrino flux measurement an interesting laboratory for additional new physics production modes. In this study,...
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