Conveners
High Energy Particle Physics
- Armen Sedrakian
High Energy Particle Physics
- Francesco Longo
High Energy Particle Physics
- Tamas Novak
- Tamas Novak (MATE Institute of Technology Karoly Robert Campus (HU))
High Energy Particle Physics
- Valerio Pia (INFN Bologna)
High Energy Particle Physics
- Valerio Pia (INFN Bologna)
High Energy Particle Physics
- Larisa Bravina
High Energy Particle Physics
- Maria Margherita Obertino (Universita e INFN Torino (IT))
High Energy Particle Physics
- Lais Soares Lavra (The University of Edinburgh (GB))
High Energy Particle Physics
- Trambak Bhattacharyya (Jan Kochanowski University)
High Energy Particle Physics
- Tommaso Dorigo (Universita e INFN, Padova (IT))
High Energy Particle Physics
- Luciano Errico (Università di Napoli "Federico II" - INFN Sezione di Napoli)
High Energy Particle Physics
- Konstantin Zhukovsky (Wigner Research Centre for Physics)
High Energy Particle Physics
- Ting Lin
High Energy Particle Physics
- Stefano Passaggio (INFN e Universita Genova (IT))
High Energy Particle Physics
- Anke Lei (CCNU)
High Energy Particle Physics
- Martina Ressegotti (INFN e Universita Genova (IT))
High Energy Particle Physics
- Carla Aramo (INFN - Napoli)
High Energy Particle Physics
- Jon Paul Lundquist (University of Nova Gorica - Center for Astrophysics and Cosmology)
High Energy Particle Physics
- There are no conveners in this block
The Standard Model states that interactions between electroweak bosons and leptons are independent of lepton flavour, a principle known as lepton flavour universality. However, recent studies of b-hadron decays involving leptons have revealed intriguing hints of deviations from lepton flavour universality. This talk reviews recent results and future prospects of lepton flavour universality...
Studying flavor oscillations and CP violation in charm mesons provides a complementary and unique probe of possible interactions beyond the Standard Model with beauty mesons, and allows exploring even higher energy scales. The LHCb experiment collected the largest sample of charm hadrons ever, and in 2019 reported the first observation of CP violation in and decays, marking a milestone in...
Highlight talk on the results of STAR spin physics
Situated at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory, the PHENIX experiment has for almost two decades been at the forefront of investigations into spin structure and dynamics in high energy nuclear physics. Although decommissioned in 2016, the PHENIX collaboration has released a number of new results over the past several years that continue to inform the...
Many theories beyond the Standard Model (SM) have been proposed to address several of the SM shortcomings, such as explaining why the Higgs boson is so light, the origin of neutrino masses, or the observed pattern of masses and mixing angles in the quark and lepton sectors. Many of these beyond-the-SM extensions predict new particles or interactions directly accessible at the LHC. This talk...
ATLAS experiment has a wide program in heavy-flavour physics. This talks summarizes the recent results on measurements of charmonium and open charm production and various b hadron decay properties, including the B meson lifetime measurements.
The Scattering and Neutrino Detector at the LHC -- SND@LHC is a compact and stand-alone experiment to perform measurements with neutrinos produced at the LHC in a hitherto unexplored pseudo-rapidity region of $7.2 < \eta < 8.4$, complementary to all the other experiments at the LHC. The experiment is located 480 m downstream of IP1 in the unused TI18 tunnel. The detector target region is...
Many scenarios beyond the standard model predict the existence of new particles with long lifetimes. These long-lived particles (LLPs) decay significantly displaced from their initial production vertex, leading to unconventional signatures within the detector. Dedicated data streams and innovative usage of the CMS detector are exploited in this context to significantly boost the sensitivity of...
The Standard Model (SM) of particle physics features a non-Abelian $SU(2)_{L} \times U(1)_{Y}$ gauge structure, necessitating the existence of triple and quartic interactions among the gauge bosons, known as triple gauge couplings (TGC) and quartic gauge couplings (QGC). These interactions are pivotal for testing the SM and exploring potential physics beyond it. The SM allows triple gauge...
The examination of the origins of transverse single-spin asymmetries has catalyzed the advancement of twist-3 formalism and transverse-momentum-dependent parton distribution functions (TMDs). The azimuthal distribution measurements of identified hadrons within a jet in transversely polarized hadronic interactions offer crucial insights into TMD physics, particularly the Collins effect, which...
The Deep Underground Neutrino Experiment (DUNE) is a next-generation, long-baseline neutrino oscillation experiment with the aim of determining the neutrino mass ordering, the possible CP-violating phase in the neutrino mixing matrix as well as the observation of proton decay and the detection of supernova neutrinos. The System for on-Axis Neutrino Detection (SAND) is one of the three...
The violation of baryon number is an essential ingredient for baryogenesis - the preferential creation of matter over antimatter - needed to account for the observed baryon asymmetry in the Universe. However, such a process has yet to be experimentally observed.
The HIBEAM/NNBAR program is a proposed two-stage experiment at the European Spallation Source to search for baryon number violation....
The NP06/ENUBET experiment concluded its ERC funded R&D program demonstrating that the monitoring of charged leptons from meson decays in an instrumented decay tunnel can constrain the systematics on the resulting neutrino flux to 1%, opening the way for a cross section measurement with unprecedented precision. The two milestones of this phase, the end-to-end simulation of a site independent...
Cryo-PoF project is an R&D funded by the Italian Insitute for Nuclear Research (INFN) in Milano-Bicocca (Italy). The technology at the basis of the project is the Power over Fiber (PoF), which delivers electrical power by sending laser light through an optical fiber to a photovoltaic power converter, to power sensors or electrical devices.
This solution offers several advantages: removal of...
The search for neutrinoless double beta (0νββ) decay is ongoing and aims to determine whether the neutrino is Majorana in nature. Discovery of such a process would immediately imply lepton number violation and represent new physics beyond the standard model. This search has been ongoing for a few decades with multiple experimental strategies and choices of isotope. CUPID (CUORE Upgrade with...
This talk presents precise measurement of the properties of the Higgs boson, including its mass, total width, spin, and CP quantum number. The measurements are performed in various Higgs boson production and decay modes, as well as their combinations. Observation of deviations between these measurements and Standard Model (SM) predictions would be a sign of possible new phenomena beyond the SM
Main topic of the LHC program is to determine the Higgs boson properties including its mass and its width. This presentation will
present latest measurements on the Higgs boson mass and width with data collected by the CMS experiment at a centre of mass energy of 13 TeV.
The discovery of the Higgs boson with the mass of about 125 GeV completed the particle content predicted by the Standard Model. Even though this model is well established and consistent with many measurements, it is not capable to solely explain some observations. Many extensions of the Standard Model addressing such shortcomings introduce additional Higgs bosons, beyond-the-Standard-Model...
A multi-TeV Muon Collider produces a significant amounts of Higgs bosons allowing precise measurements of its couplings to Standard Model fundamental particles. Moreover, Higgs boson pairs are produced with a relevant cross-section, allowing the determination of the second term of the Higgs potential by measuring the double Higgs production cross section and therefore the trilinear...
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The Tile Calorimeter (TileCal) is a sampling hadronic calorimeter covering the central region of the ATLAS experiment, with steel as absorber and plastic scintillators as active medium. The High-Luminosity phase of LHC, delivering five times the LHC nominal instantaneous luminosity, is expected to begin in 2029. TileCal will require new electronics to meet the requirements of a 1 MHz trigger,...
CMS selects interesting events using a two-tiered trigger system. The first level (L1), composed of custom hardware processors, uses information from the calorimeters and muon detectors to select events at a rate of around 110 kHz within a fixed latency of about 4 microsecond. The second level, the high-level trigger (HLT), consists of a farm of processors running a version of the full event...
The present and future runs of the Large Hadron Collider (LHC) will provide a unique opportunity to extend the physics reach of the CMS experiment. Therefore, an ambitious upgrade program of the experimental apparatus has been carried out.
The major experimental upgrades implemented before Run3 mainly aim to improve the trigger: additional new stations have been included in the CMS muon...
The electromagnetic calorimeter (ECAL) of the CMS experiment at LHC plays has a crucial role in various physics analyses, spanning from Higgs measurements to the exploration of new physics phenomena. Achieving optimal resolution for electron and photon energy measurements, as well as accurately assessing the electromagnetic component of jets and quantify missing transverse energy, necessitates...
The CMS electromagnetic calorimeter (ECAL) at the CERN Large Hadron Collider (LHC) is a high granularity, homogeneous detector composed of scintillating lead-tungstate crystals. Designed to provide exceptional energy resolution for electrons and photons, the ECAL was pivotal in the discovery of the Higgs boson, particularly in the two-photon and two Z boson decay channels. With the upcoming...
Supersymmetry (SUSY) provides elegant solutions to several problems in the Standard Model, and searches for SUSY particles are an important component of the LHC physics program. With increasing mass bounds on MSSM scenarios other non-minimal variations of supersymmetry become increasingly interesting. This talk will present the latest results of searches conducted by the ATLAS experiment...
In this presentation, an overview of the results recently obtained from the CMS experiment regarding the search for Lepton Flavor Violation (LFV) and Lepton Flavor Universality Violation (LFUV) in proton-proton collisions at a center of mass energy of 13 TeV is presented, with a focus on heavy flavor decays. These results include the search for the LFV in the charged sector through $\tau...
The NEXT collaboration aims to discover neutrinoless double beta decays in Xe-136 using a high-pressure gas time projection chamber using electroluminisce (HPGTPC-EL). This cutting-edge technology leverages the remarkable energy resolution (FWHM <1%) and topological event classification capabilities of electroluminescent HPGTPCs. Building on the success of its predecessor, NEXT-White, the...
The Belle$~$II experiment has collected a $424~\mathrm{fb}^{-1}$ sample of $e^+e^-$ collision data at centre-of-mass energies near the $\Upsilon(nS)$ resonances. This sample contains 389 million $e^+e^-\to \tau^+\tau^{-}$ events, which we use for precision tests of the standard model. We present measurements of leptonic branching fractions, lepton-flavour universality between electrons and...
DarkSide-20k is the next generation multi-ton dark matter experiment in construction at Gran Sasso underground Laboratory (LNGS). Designed upon the successful operations of DS-50 detector, it exploits new key technologies for large scale experiments: the low radioactive underground Ar subsequently depleted of 39Ar; the large area cryogenic SiPMs integrated with a custom and compact...
The Belle II experiment has collected a 364 $fb^{-1}$ sample of $e^+e^-$ collisions at the $\Upsilon (4S)$ resonance. This dataset, with its low particle multiplicity and well-constrained initial state, provides an ideal environment for studying semileptonic and missing energy $B$ decays. In this talk, I will present recent results on these decays, emphasizing their impact on the determination...
The Any Light Particle Search II (ALPS II) experiment located at DESY Hamburg, Germany, is designed to probe the existence of axions and axion-like particles. The existence of these weakly interacting particles is motivated by a solution to the strong CP-problem and being promising dark matter candidates. The ALPS II experiment is ultimately a light-shining-through-wall experiment featuring a...
In this presentation we argue that heavy quarkonia and open-charm pair photoproduction could be used as a probe of the partonic structure of the proton. At moderate energies, the exclusive production of quakronia pairs can be used for studies of the generalized parton distributions (GPDs) of gluons in the proton. For open charm pair production, the cross-section gets comparable contributions...
The nonperturbative processes, the internal transverse motion of partons inside
the hadrons (intrinsic-kt) and the multiple soft gluon emissions which
have to be resummed, are dominant contributions at low transversal momentum of
the Drell-Yan (DY) pair cross section. Therefore, this part of the DY spectra
presents a powerful tool for better understanding of such processes which is...
We calculated the gravitational form factors (GFFs) of pions, $A(t)$ and $D(t)$, using a top-down holographic QCD approach with momentum transfer dependence [1]. The GFFs of hadrons have attracted attention because they contain information on the internal stress distribution, which may provide insights into the mechanisms of hadron formation by QCD. Our results show that the absolute values of...
The Large Hadron Collider beauty (LHCb) detector is a single-arm forward spectrometer at the LHC, designed for the study of heavy flavour physics. With the large dataset collected during Runs 1 and 2 of the LHC, combined with an extensive physics program, LHCb has been successful in producing world-leading measurements in the field of flavour physics. This talk will give an overview of...
A general highlight talk of the physics at ATLAS results(excluding Heavy Ions).
The event rates and kinematics of Higgs boson production and decay processes at the LHC are sensitive probes of possible new phenomena beyond the Standard Model (BSM). This talk presents precise measurements of Higgs boson production and decay rates, obtained using the full Run 2 and partial Run 3 pp collision dataset collected by the ATLAS experiment at 13 TeV and 13.6 TeV. These include...
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...
Supersymmetry (SUSY) models with featuring small mass splittings between one or more particles and the lightest neutralino could solve the hierarchy problem as well as offer a suitable dark matter candidate consistent with the observed thermal-relic dark matter density. However, the detection of SUSY higgsinos at the LHC remains challenging especially if their mass-splitting is O(1 GeV) or...
The CMS tracker, comprised of Silicon Pixel and Silicon Strip detectors, is designed for the precise measurement of charged particle trajectories. The pixel and strip detectors have demonstrated effective and reliable operation during LHC Run 1 and Run 2, significantly contributing to the quality of the experimental data. Since the start of LHC Run 3, both detectors have been operating...
The Super Tau Charm Facility (STCF), a planned symmetric electron-positron collider in China, aims to facilitate $e^+e^−$ collisions across a center-of-mass energy range of 2 to 7 GeV, targeting a peak luminosity of $0.5×10^{35}\mathrm{cm}^{−2}\mathrm{s}^{−1}$. With an anticipated annual integrated luminosity exceeding $1~ab^{−1}$, the STCF is poised to generate vast datasets. These will...
Since the obervation of the X(3872), a large number of multi-quark candidates have been observed in the past 20 years. A thorough spectroscopic search and interpretation of these states is crucial for a profound understanding of quantum chromodynamics (QCD) and the strong interactions. The LHCb experiment, with the largest dataset of beauty and charm hadrons, is uniquely positioned to explore...
Measurements of multiboson production at the LHC are important probes of the electroweak gauge structure of the Standard Model and can constrain anomalous gauge boson couplings. In this talk, recent measurements of diboson and triboson production by the ATLAS experiment at 13 TeV and 13.6 TeV are presented. Studies of gauge-boson polarisation and their correlation are also presented. In WZ...
The strangeness enhancement, defined as the increased relative production of strange hadrons in heavy-ion collisions with respect to the production rate in pp interactions, was originally proposed as a signature of the quark-gluon plasma formation. At the LHC, the ALICE experiment observed that the yield ratios of strange hadrons to charged pions increase with the charged-particle multiplicity...
The CMS experiment plays a key role in flavour physics, particularly in the search for rare decays. This is made possible by its excellent performance and dynamic trigger configurations. The most relevant and recent results on beauty and charmed mesons decaying into muons will be presented.
A new sub-field has emerged in particle physics: borrowing techniques from quantum information science, we can now probe quantum mechanics in collider experiments. The ATLAS Collaboration recently reported the first observation of quantum entanglement between free quarks, in the first dedicated quantum information experiment at a hadron collider. Spin entanglement is observed by selecting...
Searches for resonances decaying to HH, YH and VH final states and their combinations are presented based on recent CMS measurements. The results are interpreted in various models including extended Higgs sectors, warped extra dimensions and heavy vector triplet models. Implications of finite width and interference effects are also discussed.
Di-Higgs (CMS)
Very detailed measurements of Higgs boson coupling and kinematical properties can be performed using the data collected with the ATLAS experiment, exploiting a variety of final states and production modes, and probing different regions of the phase space with increasing precision. These measurements can then be combined to exploit the specific strength of each channel, thus providing the most...
The High Luminosity upgrade of the LHC (HL-LHC) at CERN will provide unprecedented instantaneous and integrated luminosities of around 5 x 10^34 cm-2 s-1 and 3000/fb, respectively. The expected average of 140 to 200 collisions per bunch-crossing (pileup) represents a severe challenge for the detectors. In the barrel region of the CMS electromagnetic calorimeter (ECAL), the lead tungstate...
Rare kaon decays are among the most sensitive probes of both heavy and light new physics beyond the Standard Model description thanks to high precision of the Standard Model predictions, availability of very large datasets, and the relatively simple decay topologies. The NA62 experiment at CERN is a multi-purpose high-intensity kaon decay experiment, and carries out a broad rare-decay and...
The NA62 experiment at CERN took data in 2016–2018 with the main goal of measuring the $K^+ \rightarrow \pi^+ \nu \bar\nu$ decay. In this talk we report on the search for visible decays of exotic mediators from data taken in "beam-dump" mode with the NA62 experiment. NA62 can be run as a "beam-dump" experiment by removing the kaon production target and moving the upstream collimators into a...
The ICARUS-T600 liquid argon time projection chamber (LArTPC) detector is taking data at shallow depth as the far detector of the Short Baseline Neutrino program at Fermilab, to search for a possible sterile neutrino signal at $\Delta m^{2} \approx 1~\text{eV}^{2}$ with the Booster (BNB) and Main Injector (NuMI) neutrino beams at $\sim 0.8 \ \text{GeV}$ and $\sim 2 \ \text{GeV}$ average...
Inspired by the BESIII newest observation of X(2370) glueball-like particle production in e+e- collisions, we study its production in e+e- and proton-proton collisions at \SQRT{ s } = 4.95 and 13 TeV with a parton and hadron cascade model PACIAE, respectively. In this model, the final partonic state (FPS) and final hadronic state (FHS) are consecutively simulated and recorded. The X(2370)...
The unique capabilities of the Relativistic Heavy Ion Collider (RHIC) offer ideal opportunities to explore a wide range of topics in spin physics through polarized proton collisions. The STAR detectors in the forward region (approximately $2.5 < \eta < 4$) enable investigations in forward spin physics, providing deeper insights into fundamental Quantum Chromodynamics (QCD).
This overview...
The BDF/SHiP experiment is a general purpose intensity-frontier experiment for the search of feebly interacting GeV-scale particles and to perform neutrino physics measurements at the HI-ECN3 (high-intensity) beam facility at the CERN SPS, operated in beam-dump mode, taking full advantage of the available 4x10$^{19}$ protons per year at 400 GeV. CERN recently decided in favour of BDF/SHiP for...
Recent SND results on study of exclusive processes of the e+e- annihilation into hadrons below 2 GeV are presented.
The analyses are based on data collected in 2011--2023 at the VEPP-2000 collider.
The measurements of the e+ e- -> pi+ pi- pi0, e+ e- -> pi+ pi- 2pi0 eta, e+ e- -> Ks Kl, e+ e- -> eta' gamma and e+ e- -> n nbar processes are discussed.
The ICARUS collaboration employed the 760-ton T600 detector in a successful three-year physics run at the underground LNGS laboratory, performing a sensitive search for LSND-like anomalous $\nu_e$ appearance in the CERN Neutrino to Gran Sasso beam, which contributed to the constraints on the allowed neutrino oscillation parameters to a narrow region around 1 eV$^2$. After a significant...
Fermilab Muon g-2 Collaboration presented another measurement of the anomalous magnetic moment of the positive muon (a_mu) from the analysis of the data collected in 2019 and 2020. The new result agrees with the first published result from Fermilab while it also shows reduced uncertainty thanks to improved systematics and four times more statistics. Combined data brings the world average of...
The ATLAS experiment has performed a range of QCD measurements in final states with jets. Jet cross-section ratios between inclusive bins of jet multiplicity are measured differentially in variables that are sensitive to either the energy-scale or angular distribution of hadronic energy flow in the final state. Several improvements to the jet energy scale uncertainties are described, which...
The Belle II experiment has collected 424 fb$^{-1}$ sample of $e^+e^-$ collisions produced by the asymmetric SuperKEKB collider, at a centre-of-mass energy equal to or near the mass of the $\Upsilon(4S)$ resonance. Ninety-percent of the sample is at the $\Upsilon(4S)$ resonance, which decays to $B$-meson pairs. The predecessor experiment, Belle, collected nearly 1~ab$^{-1}$ of data from...
