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$\tau \to \ell +$ invisible through invisible-savvy collider variables / Guadagnoli, Diego (CERN ; Annecy, LAPTH) ; Park, Chan Beom (IBS, Daejeon, CTPU) ; Tenchini, Francesco (INFN, Pisa ; DESY)
New particles $\phi$ in the MeV-GeV range produced at colliders and escaping detection can be searched for at operating $b-$ and $\tau-$factories such as Belle II. A typical search topology involves pair-produced $\tau$s (or mesons), one of which decaying to visibles plus the $\phi$, and the other providing a tag. [...]
arXiv:2106.16236; CERN-TH-2021-101; LAPTH-023/21; CTPU-PTC-21-28.- 2021-11-10 - 8 p. - Published in : Phys. Lett. B 822 (2021) 136701 Fulltext: PDF; Fulltext from publisher: PDF;

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(85)

Beyond Tree Level with Solar Neutrinos: Towards Measuring the Flavor Composition and CP Violation / Brdar, Vedran (CERN) ; Xu, Xun-Jie (Beijing, Inst. High Energy Phys.)
After being produced as electron neutrinos ($\nu_e$), solar neutrinos partially change their flavor to $\nu_{\mu}$ and $\nu_{\tau}$ en route to Earth. Although the flavor ratio of the $\nu_e$ flux to the total flux has been well measured, the $\nu_{\mu}:\nu_{\tau}$ composition has not yet been experimentally probed. [...]
arXiv:2306.03160; CERN-TH-2023-097.- 2023-10-14 - 5 p. - Published in : Phys. Lett. B 846 (2023) 138255 Fulltext: 2306.03160 - PDF; Publication - PDF;

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(80)

The LHCb state $P_{\psi s}^\Lambda(4338)$ as a triangle singularity / Burns, T.J. (Swansea U.) ; Swanson, E.S. (Pittsburgh U.)
We present a model for the $J/\psi\Lambda$ spectrum in $B^-\to J/\psi \Lambda \bar{p}$ decays, including the $P_{\psi s}^\Lambda(4338)$ baryon recently observed by the LHCb collaboration. We assume production via triangle diagrams which couple to the final state via non-perturbative interactions which are constrained by heavy-quark and $SU_3$-flavor symmetry [...]
arXiv:2208.05106.- 2023-03-10 - 14 p. - Published in : Phys. Lett. B 838 (2023) 137715 Fulltext: 2208.05106 - PDF; 1-s2.0-S0370269323000497-main - PDF;

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(74)

Prospects for ditauonium discovery at colliders / d'Enterria, David (CERN) ; Shao, Hua-Sheng (Paris, LPTHE)
The feasibility of observing ditauonium, the bound state of two tau leptons, at $e^+e^-$ colliders (BES III at $\sqrt{s} = 3.78$ GeV, Belle II at $\sqrt{s} = 10.6$ GeV, a future super tau-charm factory (STCF) at $\sqrt{s} \approx 2m_{\tau}$, and the FCC-ee at $\sqrt{s} = 91.2$ GeV) as well as in hadronic and photon-photon collisions at the LHC, is studied. Cross sections and expected yields for spin-0 para- ($\mathcal{T}_0$) and spin-1 ortho- ($\mathcal{T}_1$) ditauonium are presented for nine different production and decay processes. [...]
arXiv:2302.07365.- 2023-05-17 - 12 p. - Published in : Phys. Lett. B 842 (2023) 137960 Fulltext: Publication - PDF; 2302.07365 - PDF;

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(69)

Neutrino oscillations with atmospheric neutrinos at large liquid argon TPCs / Chatterjee, Animesh (CERN ; Ahmedabad, Phys. Res. Lab) ; De Roeck, Albert (CERN)
We propose to study atmospheric neutrino interactions with a unique event topology to distinguish neutrinos and anti-neutrinos using a liquid argon time projection chamber in an experiment such as DUNE. The detection of CC1P and CC0P events will allow to access neutrino oscillation physics complementary to accelerator based beam neutrinos. [...]
arXiv:2402.16441.- 2024-07-01 - 6 p. - Published in : Phys. Lett. B 855 (2024) 138838 Fulltext: Publication - PDF; 2402.16441 - PDF;

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(69)

Regarding the possibility to observe the LHCb hidden-charm strange pentaquark $P_{cs}$(4459)0 in antikaon-induced $J/\psi$ meson production on protons and nuclei near the $J/\psi \Lambda$ production threshold / Paryev, E.Ya. (Moscow, INR)
We study the near-threshold $J/\psi$ meson production on protons and nuclei by considering incoherent direct non-resonant $K^-p \to {J/\psi}\Lambda$ and two-step resonant ${K^-}p \to P_{cs}(4459)^0 \to {J/\psi}\Lambda$ charmonium production processes. We calculate the absolute excitation functions, energy and momentum distributions for the non-resonant, resonant and for the combined (non-resonant plus resonant) production of $J/\psi$ mesons off protons as well as off carbon and tungsten target nuclei at near-threshold incident antikaon energies by considering these elementary production channels as well as by assuming the spin-parity assignment of the hidden-charm resonance $P_{cs}(4459)^0$ with strangeness as $J^P=(3/2)^-$ within six different scenarios for the branching ratio $Br[P_{cs}(4459)^0 \to {J/\psi}\Lambda]$ of the decay $P_{cs}(4459)^0 \to {J/\psi}\Lambda$. [...]
arXiv:2205.00728.- 2022-07 - 30 p. Fulltext: PDF;

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(65)

$(J/\psi, J/\psi)$, and $(\eta_c, \eta_c)$ production through two intermediate photons in electron-positron annihilation at B-factories / Bhatnagar, Shashank (Delhi U.) ; Negash, Hluf (Samara U.)
We study the processes, $e^- e^+ \rightarrow \gamma^* \gamma^* \rightarrow J/\psi +J/\psi$, and $e^- e^+ \rightarrow \gamma^* \gamma^* \rightarrow \eta_c+ \eta_c$ at $\sqrt{s}=10.6$ GeV in the framework of $4\times 4$ Bethe-Salpeter equation. For $J/\psi+J/\psi$ production, the dominant contribution is through fragmentation process, while for $\eta_c+\eta_c$ production, the quark rearrangement diagrams contribute. [...]
arXiv:2406.07508; CERN-TH-2024-081.- 2024-10-15 - 11 p. - Published in : Nucl. Phys. A 1053 (2025) 122969 Fulltext: PDF;

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(64)

Five-flavor pentaquarks and other light- and heavy-flavor symmetry partners of the LHCb hidden-charm pentaquarks / Peng, Fang-Zheng (Beihang U.) ; Liu, Ming-Zhu (Beihang U.) ; Pan, Ya-Wen (Beihang U.) ; Sánchez Sánchez, Mario (CENBG, Gradignan) ; Pavon Valderrama, Manuel (Beihang U.)
The discovery of three pentaquark peaks -- the $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$-- by the LHCb collaboration has a series of interesting consequences for hadron spectroscopy. If these hidden-charm objects are indeed hadronic molecules, as suspected, they will be constrained by heavy-flavor and SU(3)-flavor symmetries. [...]
arXiv:1907.05322.- 2022-10 - 21 p. - Published in : Nucl. Phys. B 983 (2022) 115936 Fulltext: PDF; Fulltext from publisher: PDF;

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(62)

An Electroweak Monopole, Dirac Quantization and the Weak Mixing Angle / Ellis, John (King's Coll. London ; CERN ; NICPB, Tallinn) ; Hung, P.Q. (Virginia U.) ; Mavromatos, Nick E. (King's Coll. London)
We consider an extension of the Standard Model that was proposed recently by one of the current authors (PQH), which admits magnetic monopoles with a mass of order of a few TeV. We impose, in addition to topological quantization in the SU(2) sector of the model, the Dirac Quantization Condition (DQC) required for consistency of the quantum theory of a charged electron in the presence of the monopole. [...]
arXiv:2008.00464; KCL-PH-TH/2020-42; CERN-TH-2020-131.- 2021-08 - 4 p. - Published in : Nucl. Phys. B 969 (2021) 115468 Fulltext: PDF; Fulltext from publisher: PDF;

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(62)

Complete Lagrangian and set of Feynman rules for scalar leptoquarks / Crivellin, Andreas (CERN ; Zurich U. ; PSI, Villigen) ; Schnell, Luc (Paris, LPTHE ; Zurich, ETH ; Ec. Polytech., Palaiseau (main))
Leptoquarks (LQs) have attracted increasing attention within recent years, mainly since they can explain the flavor anomalies found in $R(D^{(*)})$, $b \rightarrow s \ell^+ \ell^-$ transitions and the anomalous magnetic moment of the muon. In this article, we lay the groundwork for further automated analyses by presenting the complete Lagrangian and the corresponding set of Feynman rules for scalar leptoquarks. [...]
arXiv:2105.04844; CERN-TH-2021-074; PSI-PR-21-08; ZU-TH 19/21.- 2022-02 - 131 p. - Published in : Comput. Phys. Commun. 271 (2022) 108188 Fulltext: PDF;

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