Conveners
Physics and Detectors: Track 1
- Graham Wilson (University of Kansas)
- Jorge de Blas (University of Granada (Spain))
- Aleksander Filip Zarnecki (Faculty of Physics, University of Warsaw)
- Adrian Irles (IFIC (CSIC/UV))
Physics and Detectors: Track 1
- Jorge de Blas (University of Granada (Spain))
- Aleksander Filip Zarnecki (Faculty of Physics, University of Warsaw)
- Graham Wilson (University of Kansas)
- Adrian Irles (IFIC (CSIC/UV))
Physics and Detectors: Track 1: joint with Track 2
- Graham Wilson (University of Kansas)
- Frank Gaede (DESY)
- Adrian Irles (IFIC (CSIC/UV))
- Patrizia Azzi (INFN/CERN)
- Jorge de Blas (University of Granada (Spain))
- Aleksander Filip Zarnecki (Faculty of Physics, University of Warsaw)
- Lindsey Gray (Fermilab)
- Daniel Jeans (KEK IPNS)
- Thomas Madlener (DESY)
Physics and Detectors: Track 1
- Graham Wilson (University of Kansas)
- Jorge de Blas (University of Granada (Spain))
- Aleksander Filip Zarnecki (Faculty of Physics, University of Warsaw)
- Adrian Irles (IFIC (CSIC/UV))
Physics and Detectors: Track 1
- Jorge de Blas (University of Granada (Spain))
- Aleksander Filip Zarnecki (Faculty of Physics, University of Warsaw)
- Adrian Irles (IFIC (CSIC/UV))
- Graham Wilson (University of Kansas)
Physics and Detectors: Track 1
- Aleksander Filip Zarnecki (Faculty of Physics, University of Warsaw)
- Graham Wilson (University of Kansas)
- Jorge de Blas (University of Granada (Spain))
- Adrian Irles (IFIC (CSIC/UV))
Many theories beyond the Standard Model (BSM) have been proposed to address several of the Standard Model shortcomings, such as the origin of dark matter and neutrino masses, the fine-tuning of the Higgs Boson mass, or the observed pattern of masses and mixing angles in the quark and lepton sectors. Many of these BSM extensions predict new particles or interactions directly accessible at the...
The proposed LUXE experiment (LASER Und XFEL Experiment) at DESY, Hamburg, using the 16.5 GeV electron beam from the European XFEL, aims to probe QED in the non-perturbative regime created in collisions between high-intensity laser pulses and high-energy electron or photon beams. In this strong-field regime, where the electromagnetic field of the laser is above the Schwinger limit, physical...
Neutrinos are the most elusive particles known. Heavier sterile neutrinos mixing with the Standard Model partners might solve the mystery of the baryon asymmetry of the universe and take part in the mass generation mechanism for the light neutrinos. From this perspective, if the heavy neutrinos are detected, it is crucial to determine their coupling structure. Future lepton colliders would not...
Intriguing scenarios of new physics provide explanation to several shortcomings of the Standard Model. Such models as extra dimensions, supersymmetric theories or dark sector extensions, are expected to manifest in various topologies including hadronic and leptonic final states. In this talk, we focus on the recent results obtained using the full Run-II dataset collected at the LHC and...
In the Standard Model, the ground state of the Higgs field is not found at zero but instead corresponds to one of the degenerate solutions minimising the Higgs potential. In turn, this spontaneous electroweak symmetry breaking provides a mechanism for the mass generation of nearly all fundamental particles. The Standard Model makes a definite prediction for the Higgs boson self-coupling and...
Abstract: Although the studies of tensor structure of the Higgs boson interactions with vector bosons and fermions at CMS and ATLAS experiments have established that the JPC quantum numbers of the Higgs boson should be 0++, small CP violation in the Higgs sector (i.e. app. 10% contribution of the CP-odd state) cannot be excluded with the current experimental precision. We review possibilities...
The Higgs sector of particle physics is still largely uncovered, where establishing the Higgs mechanism is central to advance the field. The Higgs self-coupling is the key ingredient missing and an important puzzle piece for potentially uncovering new physics beyond the standard model.
With the energy reach and precision reach of linear $e^+e^-$ colliders, the Higgs self-coupling can be...
We present highlights of CMS measurements and searches in the area of Higgs physics, as well as prospects for the HL-LHC era.
Future Higgs Factories will allow the precise study of $e^{-}e^{+}\rightarrow q\bar{q}$ with $q=s,c,b,t$ interactions at different energies, from the Z-pole up to high energies never reached before.
In this contribution, we will discuss the experimental prospects for the measurement of differential observables in $e^{-}e^{+}\rightarrow b\bar{b}$ and $e^{-}e^{+}\rightarrow c\bar{c}$...
The majority of Monte-Carlo (MC) simulation campaigns for future $e^+e^-$ colliders has so far been based on the leading-order (LO) matrix elements provided by Whizard 1.95, followed by parton shower and hadronization in Pythia6, using the tune of the OPAL experiment at LEP. In this contribution, we test and develop the interface between Whizard3 and Pythia8. As a first step, we simulate the...
The proposed physics programs at future lepton colliders will deliver a level of experimental precision that is unseen in our field. To ensure a successful physics program, significant improvements are needed in theoretical calculations to reach or surpass the experimental accuracy. One such theoretical avenue that can be improved is the treatment of electroweak radiative corrections in...
We give a status report on new developments in the WHIZARD event generator,
including NLO electroweak automation for e+e-, loop-induced processes, POWHEG
matching, new features in the UFO interface and the current development for
matching between exclusive photon radiation and fixed-order LO/NLO EW
corrections. We report on several bug fixes relevant for certain aspects of the
ILC250 MC...
The XFEL Compton γγ Collider (XCC) Higgs factory concept is an alternative to e+e colliders which could possibly: (1) begin operation on an earlier time scale due to its lower cost and smaller footprint, and (2) provide comparable Higgs coupling measurements, with some unique advantages With the XCC, 62.8 GeV electron beams collide with 1 keV X-ray free electron laser (XFEL) beams at points...
I give a short summary on scenarios with new physics scalars that could be investigated at future e+e− colliders. I concentrate on cases where at least one of the additional scalar has a mass below 125 GeV, and discuss both models where this could be realized, as well as studies which focus on such scenarios.
New sources of neutral scalar-mediated CP violation that arise in extended Higgs sectors can originate in the Yukawa sector or in the structure of the scalar potential. Most treatments in the literature focus on CP-violating Yukawa interactions of neutral scalars, which is an example of P-odd CP violation since it derives from the mixing of two C-even operators of opposite sign P. In contrast,...
Electroweak baryogenesis is a promising scenario, which relies on electroweak symmetry breaking caused by the Higgs potential.
The detail of the Higgs potential would be revealed by the future high energy colliders, so that these are necessary to test the scenario of electroweak baryogenesis.
We have calculated the baryon number density in aligned two Higgs doublet model, in which coupling...
We discuss signatures of CP-violating (CPV) two Higgs doublet models at LHC and future linear colliders, where CPV appears from Yukawa interactions and the Higgs potential. In particular, we consider the scenario with the Yukawa alignment to avoid tree level flavor changing neutral currents. In addition, we consider the Higgs alignment in which the couplings of the discovered Higgs boson are...
Vectorlike leptons are an intriguing possibility for physics beyond the Standard Model. This talk is concerned with the example of weak isosinglet vectorlike leptons that decay through a small mixing with the tau lepton, for which the discovery and exclusion reach of the Large Hadron Collider and future proposed hadron colliders is limited. For this minimal model, I will argue that an $e^+...
In various new physics models, the Higgs sector is often extended from its minimal form in the standard model (SM), and there are additional Higgs bosons.
Direct searches of the additional Higgs bosons and precision studies of the SM-like Higgs boson play complementary roles to explore the extended Higgs models.
Recently, it has turned out that the properties of the SM-like Higgs boson are...
We study the search for Right Handed Neutrinos (RHN) at ILC. RHN are introduced by several extensions of the SM to explain the tiny neutrino mass. If RHN is a Majorana particle, RHN pair production is allowed in e−e+ collisions. We focus on RHN pair production based on a minimal U(1)B−L model. A distinctive signature is a pair of same sign leptons, a smoking-gun for Lepton Number Violation....
A light Higgs boson, with mass of the order of 100 GeV, is still not excluded by the existing experimental data, provided its coupling to gauge bosons is strongly suppressed compared to a SM-like Higgs boson at the same mass. Also other couplings of such a scalar could be very different from the SM predictions leading to non-standard decay paterns. Considered in the presented study is the...
The colour neutral sector is the one most relevant for the suggestions SUSY presents
to the problems of the the SM - the hierarchy problem, naturalness, dark matter, the
muon g-2 enigma. This sector is both for theoretical reasons, and from the results of
global fits, expected to be light. But, unfortunately, it is also the sector for which
current energy frontier colliders, viz. the LHC,...
The large top quark samples collected with the ATLAS experiment at the LHC have yielded measurements of the production cross section of unprecedented precision and in new kinematic regimes. They have also enabled new measurements of top quark properties that were previously inaccessible, enabled the observation of many rare top quark production processes predicted by the Standard Model and...
The analysis of the long-range particle correlations can
yield valuable insights into the initial state of matter and
potentially reveal the existence of Beyond the Standard Model
scenarios, such as the "Hidden Valley"(HV) one. In this work, we are
interested in QCD-like hidden sectors in which the production of HV
matter would enhance and enlarge azimuthal correlations of...
In this work the prospects for measurements of the top-quark couplings at future colliders are presented. Projections are presented for the high luminosity phase of the Large Hadron Collider and a future Higgs/electroweak/top factory lepton collider. Results are presented for the expected bounds on Wilson coefficients of the relevant SMEFT operators from a global fit to the top-quark physics sector.
Some say SUSY is dead, because LHC has not discovered it yet. But is this
really true? It turns out that the story is more subtle. SUSY can be 'just
around the corner', even if no signs of it has been found and a closer
look is needed to quantify the impact of LHC limits and their implications
for future colliders. In this contribution, a study of prospects for SUSY
based on scanning...
We present the CMS perspective on the legacy of the CMS experiment in the area of electroweak precision measurements, including the latest measurements as well as prospects for the HL-LHC era.
Since the observation of a spin-0 particle at LHC by the ATLAS and CMS collaborations, efforts have been made to confirm that the newly discovered particle is indeed the Standard Model (SM) Higgs boson.
Precise measurements of the Higgs boson couplings are essential for the confirmation of the SM nature of the Higgs boson, the search for physics beyond the SM, and global fits of Effective...
The LHC's high center-of-mass energy has enabled the production of millions of top quarks, providing an opportunity to investigate top quark-related observables with great precision. Discrepancies between experimental measurements and theoretical predictions in the top quark sector may suggest the presence of new physics. This presentation highlights recent investigations conducted by the CMS...
