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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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(91)

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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(83)

Doubly Heavy Tetraquarks in the Born-Oppenheimer approximation / Maiani, Luciano (Rome U. ; INFN, Rome ; CERN) ; Pilloni, Alessandro (Messina U. ; INFN, Catania) ; Polosa, Antonio D. (Rome U. ; INFN, Rome) ; Riquer, Veronica (Rome U. ; INFN, Rome ; CERN)
Tetraquarks QQq*q* are found to be described remarkably well with the Quantum Chromodynamics version of the Hydrogen bond, as treated with the Born-Oppenheimer approximation. We show the robustness of the method by computing the mass of the observed Tcc tetraquark following two different paths. [...]
arXiv:2208.02730.- 2023-01-10 - 8 p. - Published in : Phys. Lett. B 836 (2023) 137624 Fulltext: 2208.02730 - PDF; Publication - PDF;

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(82)

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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(68)

Multi-lepton probes of new physics and lepton-universality in top-quark interactions / Afik, Yoav (CERN) ; Bar-Shalom, Shaouly (Technion) ; Pal, Kuntal (UC, Riverside) ; Soni, Amarjit (Brookhaven) ; Wudka, Jose (UC, Riverside)
We explore the sensitivity to new physics (NP) in the associated production of top-quarks with leptons $pp \to t \bar t \ell^+ \ell^-$, which leads to the multi-leptons signals $pp \to n \ell + {\tt jets} + \not\!\! E_T$, where $n = 2,3,4$. The NP is parameterized via 4-Fermi effective $t\bar{t} \ell^+ \ell^-$ contact interactions of various types, which are generated by multi-TeV heavy scalar, vector or tensor exchanges in $t \bar t \to \ell^+ \ell^-$; we focus on the case of $\ell=e,\mu$. [...]
arXiv:2111.13711.- 2022-07 - 27 p. - Published in : Nucl. Phys. B 980 (2022) 115849 Fulltext: 2111.13711 - PDF; Publication - PDF;

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(67)

Quantum integration of elementary particle processes / Agliardi, Gabriele (Milan Polytechnic) ; Grossi, Michele (CERN) ; Pellen, Mathieu (Freiburg U.) ; Prati, Enrico (CNR, CeFSA ; Parma U.)
We apply quantum integration to elementary particle-physics processes. In particular, we look at scattering processes such as ${\rm e}^+{\rm e}^- \to q \bar q$ and ${\rm e}^+{\rm e}^- \to q \bar q' {\rm W}$. [...]
arXiv:2201.01547; FR-PHENO-2022-01.- 2022-06-07 - 19 p. - Published in : Phys. Lett. B 832 (2022) 137228 Fulltext: 2201.01547 - PDF; Publication - PDF;

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(60)

Open charm tetraquarks in broken SU(3)_F symmetry / Maiani, L. (Rome U. ; CERN) ; Polosa, A.D. (Rome U.) ; Riquer, V. (Rome U. ; CERN)
Prompted by a recent lattice QCD calculation, we review the SU(3) light quark flavor structure of charmed tetraquarks with spin-0 diquarks. Fermi statistics forces the three light quarks to be in the representation 3*x3*= 3+6*. [...]
arXiv:2405.08545.- 2024-08-01 - 6 p. - Published in : Phys. Rev. D 110 (2024) 034014 Fulltext: Publication - PDF; 2405.08545 - PDF;

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(59)

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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(53)

$(J/\psi, J/\psi)$, 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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Probing Neutral Triple Gauge Couplings at the LHC and Future Hadron Colliders / Ellis, John (King's Coll. London ; CERN ; NICPB, Tallinn ; Tsung-Dao Lee Inst., Shanghai ; SKLPPC, Shanghai) ; He, Hong-Jian (Tsung-Dao Lee Inst., Shanghai ; SKLPPC, Shanghai ; Tsinghua U., Beijing ; Tsinghua U., Beijing, CHEP) ; Xiao, Rui-Qing (King's Coll. London ; Tsung-Dao Lee Inst., Shanghai ; SKLPPC, Shanghai)
We study probes of neutral triple gauge couplings (nTGCs) at the LHC and the proposed 100TeV $pp$ colliders, and compare their sensitivity reaches with those of the proposed $e^+ e^-$ colliders. The nTGCs provide a unique window to the new physics beyond the Standard Model (SM) because they can arise from SM effective field theory (SMEFT) operators that respect the full electroweak gauge group $SU(2)_L\otimes U(1)_Y$ of the SM only at the level of dimension-8 or higher. [...]
arXiv:2206.11676; KCL-PH-TH/2022-35; CERN-TH-2022-089.- 2023-02-01 - 57 p. - Published in : Phys. Rev. D 107 (2023) 035005 Fulltext: 2206.11676 - PDF; Publication - PDF;

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