The theoretical predictions for the $D-\bar{D}$ mixing parameters fall significantly short of experimental measurements, with discrepancies spanning several orders of magnitude. This divergence is largely attributed to the GlashowโIliopoulosโMaiani (GIM) mechanism, which suppresses leading-order contributions. However, higher-order corrections and nonperturbative effects have the potential to...
An accurate description of the scalar potential at finite temperature is crucial for studying cosmological first-order phase transitions (FOPT) in the early Universe. At finite temperatures, a precise treatment of thermal resummations is essential, as bosonic fields encounter significant infrared issues that can compromise standard perturbative approaches. The Partial Dressing (or the tadpole...
Ann M Wang, SLAC, for the LZ Collaboration
The LUX-ZEPLIN (LZ) experiment has been collecting data since 2021 to search for evidence of dark matter interactions and other rare physics phenomena using a dual-phase time projection chamber (TPC) filled with 7 tonnes of active xenon. The TPC is surrounded by a veto system designed to reject radioactive and muon backgrounds. The experiment is...
The Particle Physics Project Prioritization Panel (P5), a decadal strategic planning exercise of the Particle Physics Community, has released their final report. The report is based on input from โSnowmass,โ a scientific study to define the most important questions for the field of particle physics and identify promising opportunities to address them. Taking input from Snowmass, P5 lays out a...
A deep understanding of neutrino-target interactions is crucial to reduce the systematic uncertainties for oscillation parameter measurements. We investigate the effect of final-state interactions (FSI) in the charge current quasi-elastic (CCQE) channel by reconstructing the neutrino energy using the calorimetric method. A selection of events with 1 proton, 0 pion, and any number of neutrons...
800 MHz bulk niobium superconducting RF cavities are a fundamental, and sizeable, component of the FCC machine at all operating points. In the Booster, for Z, W, and H operating points, there are 112 cavities in 28 cryomodules. For TTbar operation, there will be a total of 448 cavities in the booster in 112 cryomodules, The FCC cavity performance specifications currently sit at the upper limit...
The exceptionally large dataset collected by the ATLAS detector at the highest proton-proton collision energies provided by the LHC enables precision testing of theoretical predictions using an extensive sample of top quark events. Recent measurements include total and differential top quark cross sections, as well as measurements of associated top quark production. This contribution presents...
Current and future accelerator-based neutrino facilities, leveraging intense neutrino beams and advanced detectors, aim to precisely determine neutrino properties and probe signals of weakly interacting beyond the Standard Model physics. Achieving discovery-level precision and fully exploring the physics potential of these experiments critically depends on the accuracy of our understanding of...
Search for rare decay of SM Higgs to light scalars in the CMS experiment
SABRE is an international collaboration that will operate similar particle detectors in the Northern (SABRE North) and Southern Hemispheres (SABRE South). This innovative approach distinguishes possible dark matter signals from seasonal backgrounds, a pioneering strategy only possible with a southern hemisphere experiment. SABRE South is located at the Stawell Underground Physics Laboratory...
The flavor space of particles produced in collider environments provides informative quantum correlations. However, generally there is no first-principle calculation of the flavor state of the meson pair produced at colliders. In this work we construct a complementary set of measurements on the flavor state ultilizing the oscillation and decay of the meson pair, providing a systematic way to...
Cross section measurements of top quark production
We will report the status of the milliQan experiment at CERN. The milliQan "bar" detector was completed in June 2023 and has been taking physics data since then. The milliQan "slab" detector was completed in Fall of 2024 and is being commissioned. We will give an update on the readiness of the slab detectorfor physics data taking. Finally, we will present first physics results on the search...
The T2K experiment's primary off-axis near detector, ND280, has the essential role of constraining the main systematic uncertainties that affect neutrino oscillation measurements. Among the leading sources of these uncertainties are neutrino-nucleon interaction cross sections, which must be more precisely understood to fully exploit the potential of current and future long-baseline neutrino...
We present a preliminary lattice based on a bottom up design for a rapidly cycling synchrotron (RCS) accelerator chain for a multi-TeV muon collider based at Fermilab. The RCS rings range in circumference from 6.28 km (that of the Tevatron) to 15.5 km (the current estimate for the maximum that can be accommodated at the Fermilab site). Each ring is either a conventional RCS (consisting of...
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 of explaining some observations by itself. Many extensions of the Standard Model addressing such shortcomings introduce beyond-the-Standard-Model couplings to the Higgs...
The non-leptonic $B$-meson decays serve as excellent ground to test the Standard Model for example, how well are flavor symmetries such as isospin and flavor SU(3) realised in data, and their study is also important for new physics searches. As it has been observed, the analysis of $B \to PP$ decays where $B = \{B^0, B^+, B_s^0\}$ and $P = \{ \pi, K \}$ under the flavor SU(3) symmetry...
The top-quark mass is one of the key fundamental parameters of the Standard Model that must be determined experimentally. Its value has an important effect on many precision measurements and tests of the Standard Model. The Tevatron and LHC experiments have developed an extensive program to determine the top quark mass using a variety of methods. In this contribution, the top quark mass...
Particle accelerators are typically constrained in intensity of a beam due to a phenomenon known as the dynamic aperture (DA). ย This DA is typically determinedย by the elemental components of the lattice under consideration and is often constricted by the presence of nonlinear elements, such as sextupoleย magnets. ย However, the lattice may often be represented by an order $n$ Taylor map, which...
The Short-Baseline Near Detector (SBND) is a 112-ton scale Liquid Argon Time Projection Chamber (LArTPC) neutrino detector positioned in the Booster Neutrino Beam at Fermilab, as part of the Short-Baseline Neutrino (SBN) program. The detector is currently collecting neutrino beam data. Located only 110 m from the neutrino production target, SBND is exposed to a very high flux of neutrinos and...
We present searches from the CMS experiment, performed with data collected during LHC Run 2 at a centre-of-mass energy of 13 TeV, for additional Higgs bosons. A variety of states are searched for, at masses both above and below 125 GeV.
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The SUB-Millicharge ExperimenT (SUBMET) is designed to search for sub-millicharged particles produced in proton fixed-target collisions at J-PARC. The detector, positioned 280 meters downstream of the target, consists of two layers of stacked scintillator bars coupled to photomultiplier tubes (PMTs). The dominant background arises from random coincidences between the two detector layers,...
Using $(2259.3 \pm 11.1)\times10^{6}$ $\psi(2S)$ events acquired with the BESIII
detector, the branching fraction of $\psi(2S)\rightarrow\tau^{+}\tau^{-}$ is measured with improved precision to be $\mathcal{B}_{\psi(2S)\rightarrow\tau^{+}\tau^{-}}=(3.240~\pm~0.023~\pm~0.081)\times
10^{-3}$, where the first and second uncertainties are statistical and systematic, respectively, which is...
Recent searches for exotic resonances performed in the ATLAS experiment will be presented. This will include studies of $Z_c$ and $Z_{cs}$ states in $B$ meson decays and searches for exotic resonances in di-charmonium final states.
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...
The tracking performance of the ATLAS detector relies critically on its 4-layer Pixel
Detector, with a sensitive area of ~1.9 m2 and 92 million pixels. Its original part,
consisting in 3 layers of planar pixel sensor is continuously operating since the start
of LHC collisions in 2008, while Its innermost layer, the Insertable B Layer (IBL) at
about 3 cm from the beam line, was installed in...
BESIII has collected 20.3 and 7.33 $fb^{-1}$ of e+e- collision data samples at 3.773 and 4.128-4.226 GeV, respectively, presenting a unique opportunity to test the non-perturbative nature of QCD in the charm sector. We will present the first experimental study of $D_{(s)}^{*+} \to l^+ \nu$ and the improved measurements of |Vcd|, |Vcs|, $D_s^+/D^+$ decay constant in $D_s^+/D^+ \to \mu^+ \nu$...
Stealth and RPV SUSY searches with CMS
In recent years, a number of charmonium-like states have been observed
above the open-charm threshold in various experiments. Their properties often go
against our expectations for regular charmonium states, making their
interpretation difficult. With BESIII, we are a leading contributor to the
experimental studies of the so-called XYZ states โ studying Y-states directly in
e+e-...
Di-Higgs searches at CMS
This talk presents the first CMS measurements of the production fractions of Bโบ, Bโฐ, and Bโฐโ mesons in proton-proton collisions at 13 TeV. The analysis is based on a dedicated 2018 data set collected with high-rate triggers, which enables the reconstruction of hadronic open-charm decays of B mesons (e.g., B โ ฯD), where the D mesons decay fully hadronically. These channels allow precise...
The ATLAS experiment is currently preparing for an upgrade of the Inner Tracking for High-Luminosity LHC operation, scheduled to start in 2030. The radiation damage at the maximum integrated luminosity of 4000/fb implies integrated hadron fluencies over 2x1016neq/cm2 and tracking in a very dense environment call for a replacement of the existing Inner Detector. An all-silicon Inner Tracker...
Recent searches for SUSY particles with CMS with MET
The Belle and Belle II experiments have collected a $1.6 ~\mathrm{ab}^{-1}$ sample of $e^+e^-$ collision data at centre-of-mass energies near the $\Upsilon(nS)$ resonances. In particular, the Belle II experiment collected a 19.2 fb$^{-1}$ sample of data at centre-of-mass energies near the $\Upsilon(10753)$ resonance. We present several results related to the following processes: $e^+e-\to...
The Belle and Belle II experiments have collected a combined sample of 1.2 ab$^{-1}$ of $e^+ e^-\to B\bar{B}$ collisions at a centre-of-mass energy corresponding to the $\Upsilon(4S)$ resonance. These data, with low particle multiplicity and constrained initial state kinematics, are an ideal environment for studying semileptonic and leptonic decays of the $B$ meson. Combined with...
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 the most recent results in the 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...
Many well-motivated extensions of the Standard Model predict light (pseudo)scalars, referred to as ๐ bosons, that couple to the 125 GeV Higgs boson, enabling new exotic decay modes. This study presents a search for Higgs boson decays into a pair of such particles, $H\rightarrow bb$, where one ๐-boson decays into a photon pair and the other into a $\tau$-lepton pair, performed for the first...
The Electron-Ion Collider (EIC), the future facility at Brookhaven National Laboratory (Upton, NY, USA), will enable precision studies of the partonic structure of nucleons and nuclei across a broad range of Bjorken-x and four-momentum transfer squared Q2, with center-of-mass energies from 20 to 140 GeV. Leveraging high luminosity (1034 cmโ2sโ1) and polarized beams (electrons, protons, and...
BESIII has accumulated 4.5 $fb^-1$ of e+e- collision data in the 4.6 to 4.7 GeV energy range, which provide the largest dataset of $\Lambda_c - \bar{\Lambda_c}$ pairs in the world. Our presentation will include the observation of a rare beta decay of the charmed baryon $\Lambda_c^+ \to n e^+ \nu$ with a Graph Neural Network approach and the first measurement of the decay asymmetry in the pure...
This contribution discusses the physics potential of a future muon collider operating at a center-of-mass energy of $\sqrt{s}$ = 10 TeV for precision studies in the Higgs sector. Using a detailed detector simulation that incorporates the dominant sources of machine-induced background, the expected sensitivity to key Higgs processes is evaluated. These include the measurement of production...
Physics results with the CMS Precision Proton Spectrometer and projections for the HL-LHC with PPS2
Precision timing at the HL-LHC with the CMS MIP Timing Detector: current progress on validation and production
Semileptonic b-hadron decays proceed via charged-current interactions and provide powerful probes for testing the Standard Model and searching for New Physics effects. The advantages of studying such decays include the large branching fractions and reliable calculations of the hadron matrix elements. Several SM features may be studied, such as the ratios of branching fractions, CKM parameters,...
In recent times, several anomalies have been observed in the semileptonic decays of $B$ meson mediated by FCNC transitions $b \to s \mu^+ \mu^-$. These tantalizing signals point towards the possible existence of New Physics beyond the Standard Model. We explore $U(1)_{L_e-L_\mu}$ gauge extension of the Standard Model with particle content enlarged by three neutral fermions, of which the...
The LHC and the HL-LHC demand detectors that can withstand the hostile radiation and high occupancy environment of hadron colliders. On the surface, Higgs factory detectors are without challenges, but they merely are without these specific challenges โ that does not make them easy to build. From the complex machine-detector interface to the varied role of muon systems, detectors at Higgs...
Measurements of the Higgs boson properties from diboson final states
Searches for Supersymmetry with compressed scenarios
Spin and symmetry properties of all-charm tetraquarks
Searches for processes in which baryon number is violated by 2, as would be observed in neutron-antineutron oscillation, have so far come up empty. Many of these searches involve first-generation quarks leaving open the possibility that these processes preferentially couple to initial or final states involving second- and third-generation quarks. We present the results of a search for $B^+\to...
This talk presents precise measurement of the CP properties of the Higgs boson using the full dataset collected in pp collisions at 13 TeV during Run 2 and at 13.6 TeV during Run 3 of the LHC. 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...
Based on the large samples of 10 billion J/ฯ and 2.7 billion ฯ(3686) events accumulated at the BESIII detector, the recent progresses on baryon spectroscopy, including the amplitude analyses of $ฯ(3686)\to p \bar{p} \pi^0$, $ฯ(3686) \to p \bar{p} \eta$, and $ฯ(3686)\to \Lambda \bar{\Sigma} \pi$, will be presented. The perspectives on the baryon spectroscopy at BESIII will also be discussed.
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. Naturalness arguments favour supersymmetric partners of the gluons and third-generation quarks with masses light enough to be produced at the LHC. With increasing mass bounds on more classical MSSM scenarios other...
The ATLAS experiment at CERN is constructing upgraded system for the "High Luminosity LHC", with collisions due to start in 2030. In order to deliver an order of magnitude more data than previous LHC runs, 14 TeV protons will collide with an instantaneous luminosity of up to 7.5 x 10e34 cm^-2s^-1, resulting in much higher pileup and data rates than the current experiment was designed to...
The emergence of fully electric vehicles and autonomous systems (e.g., cars, drones), combined with advancements in long-distance power transmission (e.g., satellites), has accelerated the development of wireless power transmission technologies. These technologies aim to address critical challenges such as reducing the reliance on extensive cabling and minimizing noise interference, especially...
This talk will present recent results from the ATLAS experiment on measurement of beauty and charm hadron production and decay properties. Measurements of D meson production and of associated production of $J/psi$ with other objects at $\sqrt{s} = 13$ TeV will be reported, as well as measurements of $B^0$ meson lifetime and of properties of $B^0_{(s)}\to\mu^+\mu^-$ rare decays. Parallel...
Using 126 fb-1 of Run 2 data collected with the ATLAS detector, a measurement of the $b\bar b$ decay of the Standard Model Higgs boson produced through vector boson fusion yielded a signal strength corresponding to an observed (expected) significance of 2.6 (2.8) standard deviations from the background only hypothesis. This talk will focus on improving the previous measurement by utilizing new...
Searches in CMS for new physics in final states with leptons
While the excitation spectrum of light mesons, which are composed of up and down quarks, is already mapped out fairly well, the spectrum of strange mesons is still to be mapped out in detail, potentially holding many surprise.
At the COMPASS experiment at CERN, we study the strange-meson spectrum in the diffractive scattering of a high-energy kaon beam.
In this talk we will focus on the...
Constraints on Higgs light Yukawa couplings
Thanks to the exellent detector performance and the unprecedented yield of all sorts of heavy flavour hadrons, LHCb have discovered a plethora of new hadronic states, many of which cannot fall into the conventional picture of quark model. This talk will report on the latest highlights of exotic states at LHCb, including pentaquark and tetraquark candidates.
The Standard Model of Particle Physics explains many natural phenomena yet remains incomplete. Many new physics models (such as leptoquarks, W'/Z', or heavy neutral leptons) could manifest in final states involving multiple leptons. This talk will summarise the latest results from ATLAS in searches involving final states with leptons.
The CMS muon system is undergoing substantial upgrades to meet the challenges of the High-Luminosity LHC (HL-LHC), including the installation of the new Muon Endcap 0 (ME0) detector. Large-scale production started in 2024. ME0 is a six-layer station designed to extend pseudo-rapidity coverage to |\eta| = 2.8 from the previous maximum of |\eta| = 2.4, enhancing sensitivity to forward physics...
The exceptionally large dataset collected by the ATLAS detector at the highest proton-proton collision energies provided by the LHC enables precision testing of theoretical predictions using an extensive sample of top quark events. This wealth of data has opened the door to new measurements of top quark properties including those particularly sensitive to the ttbar threshold region, such as...
The Deep Underground Neutrino Experiment (DUNE) is a long-baseline neutrino experiment aimed at addressing fundamental questions such as the matter-antimatter asymmetry in the universe. Currently, DUNE relies on multiple platforms to store internal documentation, including DocDB, Indico (hosted by Fermilab), and EDMS (hosted by CERN). Retrieving relevant historical informationโespecially from...
Exploring new physics in the Dark Sector at CMS
Among the intriguing scenarios of new physics that provide explanation to several shortcomings of the Standard Model (SM), hidden valley scenarios include a Dark Sector that extends the SM with a non-Abelian gauge group, similar to quantum chromodynamics with new matter and gauge fields analogous to the SM quark and gluon fields. This may...
Using the worldโs largest samples of $J/\psi$ and $\psi(3686)$ events produced in e+e- annihilation, BESIII is uniquely positioned to study light hadrons in radiative and hadronic charmonium decays. In particular, exotic hadron candidates including multiquark states, hybrid mesons and glueballs can be studied in high detail. Recent highlights on the light exotics searches, including...
Searches for new physics in CMS in events with photons in the final state
EFT based searches in the top quark sector
We study the physics potentials of heavy QCD axions at 3/10 TeV muon colliders (MuC). These heavy QCD axions differ from typical ALPs as they solve the Strong CP puzzle, and their phenomenology is driven by the $aG\tilde{G}$ couplings. Different realizations of heavy QCD axions have different implications, and we show comprehensively how muon colliders can uniquely probe them with a huge...
Particle flow reconstruction algorithms are fundamental for physics analysis at collider experiments. Improving these algorithms with deep learning presents a unique chance to enhance experimental sensitivity at the LHC and future facilities. This talk presents HGPflow, a deep learning method using hypergraphs that offers a physics-motivated framework for the energy assignment task in particle...
The worldโs largest sample of J/ฯ events accumulated at the BESIII detector offers a unique opportunity to investigate ฮท and ฮทโฒ physics via two body J/ฯ radiative or hadronic decays. In recent years the BESIII experiment has made significant progresses in ฮท/ฮทโฒ decays. A selection of recent highlights in light meson spectroscopy at BESIII are reviewed in this report, including observation of...
The direct production of electroweak SUSY particles, including sleptons, charginos, and neutralinos, is a particularly interesting area with connections to dark matter and the naturalness of the Higgs mass. The small production cross-sections and challenging experimental signatures, often involving compressed spectra, lead to difficult searches. This talk will highlight the most recent results...
Many-parameter fits to precise measurements in the framework of the Standard Model Effective Field Theory are becoming a standard interpretation of LHC and other collider data. In this contribution an overview is given of state-of-the-art EFT interpretations in ATLAS with particular emphasis on results in the top quark sector.
The strong and electromagnetic interactions are the two main decay mechanisms in charmonium decays.
The relative phase between them is a basic parameter in understanding the decay dynamics, especially for precision measurements. In this talk, we present a direct measurement with resonance scan method. By introducing the EM amplitude from continuum decay, the interference between EM and strong...
Sci. China-Phys. Mech. Astron., 66(1): 211062 (2023)
arXiv:2411.09345 [Conceptual Design Report]
Nucl. Sci. Tech.35,148(2024)
Nucl. Sci. Tech.35,201(2024)
Nucl. Sci. Tech. 36,41(2025)
arXiv:2407.20723 [JINST peer-reviewing]
arXiv:2401.15477 [10.1007/978-981-97-0065-3_19]
PoS ICHEP2024 (2025) 728...
Searches in CMS for long-lived particles and other non-conventional signatures
Reconstructing low-dimensional truth labels from high-dimensional detector data is a central challenge in any experiment that relies on robust mappings across this so-called domain gap, from multi-particle final states in high-energy physics to large-scale early-universe structure in cosmological surveys. We introduce a new method to bridge this domain gap with an intermediate, synthetic...
We present a Retrieval-Augmented Generation (RAG) system designed to assist particle physics analysts by enabling efficient querying of information from a collection of technical documents. The system can process and extract relevant content from PDF files, provide accurate answers to user queries, and include direct reference links to the original sources. We demonstrate the capabilities of...
The study of rare top quark production modes opens the gate to a number of new physics models that introduce large contributions to them. As an example, the production of four top quarks could be affected by the direct or indirect production of top-philic heavy resonances or be modified by anomalous Yukawa interactions between the top quark and the Higgs boson. A set of measurements is...
The BESIII experiment has collected 2.6 billion $\psi(3686)$ events, 10 billion $J/\psi$ events, 20 $fb^{-1}$ of D meson pairs at 3.773 GeV, and 7.33 $fb^{-1}$ of $D_sD_s^*$ events from 4.128 to 4.226 GeV. These huge data samples allow us to search for rare processes in charm hadron decays.
In this talk, we report the search of the FCNC decays $J/\psi \to D^0 \mu^+ \mu^-$ and $D_s^+ \to...
Many theories beyond the Standard Model (BSM) predict the presence of long-lived particles (LLPs) including including long-lived gluinos pair-produced via the strong interaction, long-lived neutralinos decaying to a Higgs boson, an exotic Higgs-portal model, among others. One of the most striking signatures due to the special reconstruction algorithms involved is due to charged particles...
Many new physics models predict the existence of heavy vector bosons which can decay hadronically, making these important signatures in the search for new physics. Searches for such resonances have been performed in various final states. This talk summarises the latest ATLAS searches for this topic.
