第十二届中国 LHC 物理会议（CLHCP2026）

Session

parallel 2: BSM 4

31 Oct 2026, 16:20

湖北省武汉市 (Wuhan, Hubei)

Conveners

parallel 2: BSM 4

• 大川英希

789. Reinterpretation of searches for supersymmetry in models with variable R-parity-violating coupling strength using the full ATLAS Run 2 Dataset

Jiarong Yuan

31/10/2026, 16:20

A collection of thirteen ATLAS searches for supersymmetry (SUSY) models, optimized for R-parity-conserving (RPC) a nd R-parity-violating (RPV) SUSY, are reinterpreted in SUSY models with variable RPV coupling strength, which determines whether the lightest supersymmetric particle decays promptly or is long-lived. The dataset corresponds to an integrated luminosity of 140 fb-1 proton-proton...

790. Probing Light Dark Fermions in $B \to D^{(*)}\ell X_{\rm inv}$ via Rate Distributions

Ria Sain

31/10/2026, 16:35

Experimental analyses of the semileptonic decays $ B \to D^{(*)} \ell \bar{\nu}$ typically rely on the assumption that the missing energy originates from a massless neutrino, as predicted by the Standard Model. However, this assumption may not hold in scenarios where the invisible final-state particle is instead massive, such as a sterile neutrino or a dark-sector fermion. In this work, we...

791. Search for compressed electroweak SUSY production in final states with two 𝝉 -leptons in √𝒔 = 13 and 13.6 TeV 𝒑 𝒑collisions with the ATLAS detector

Chengxin Liao

31/10/2026, 16:50

Searches for the production of $\tau$-sleptons ($\tilde{\tau}$), charginos ($\tilde{\chi}_1^\pm$), and neutralinos ($\tilde{\chi}_2^0$) in events with at least one hadronically decaying $\tau$-lepton are presented, targeting compressed mass spectra scenarios. To enhance sensitivity to compressed mass spectra, production modes with initial-state radiation (ISR) jets are considered. The searches...

792. Pati-Salam model in curved space-time and fermions representation

李德胜

31/10/2026, 17:05

Square root metric geometry has extra U(4')×U(4)-bundle, then a Pati-Salam model in curved space-time and Einstein-Cartan gravity theory can be constructed based on self-parallel transport principle. A fermions representation scheme is suggested, three families quarks and leptons find the place in the fermions representation scheme; flavor mixing matrices, CKM (Cabibbo-Kobayashi-Maskawa) and...

793. PKMu cosmic-ray program: Upward-Going Muons on Earth and the Moon

Qiang Li

31/10/2026, 17:20

We investigate upward-going muons on Earth and the Moon to explore their flux characteristics, production mechanisms, and potential applications. On the Moon, upward-going hadrons escaping the lunar regolith can decay in flight, producing muons detectable by surface or orbital instruments. Using Monte Carlo simulations, we study their energy spectra, angular distributions, and integrated...

794. Axion star bosenova in axion miniclusters

Zihang Wang

31/10/2026, 17:35

Axionic dark matter can form structures known as miniclusters that host an axion star at their center. The axion star feeds on the host, and the axion star mass may grow beyond its stability limit, leading to a potential bosenova. Since a dilute axion star has a stable mass limit only when self-interaction is considered, we include axion self-interaction effects in this paper, and specify the...

795. Searching for axionlike dark matter by quantum technologies

Jing Dong

31/10/2026, 17:50

"The enhancement of weak signals and the detection of hypothetical particles facilitated by quantum amplification are crucial for advancing fundamental physics and its practical applications. Recently, it was experimentally observed that a magnetic field can be amplified by using nuclear spins under Markovian noise [H. Su et al., New constraints on axion-mediated spin interactions using...

913. Probing Dark Shower Models at Colliders using Long-Lived Particle Searches

刘威 (Nanjing University of Science and Technology（南京理工）)

31/10/2026, 18:05

We propose a new class of dark-shower signatures in Standard Model extensions featuring Hidden Valleys or dark sectors coupled through an s-channel mediator. In this framework, unstable dark pions appear as long-lived particles (LLPs), with their lifetimes treated as free parameters. The resulting signatures, which we term semi-visible emerging jets (SVEJ), continuously interpolate between the...