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Jet-Origin Identification and Its Application at an Electron-Positron Higgs Factory
/ Liang, Hao (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Zhu, Yongfeng (Peking U., SKLNPT) ; Wang, Yuexin (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS ; CCAST World Lab, Beijing) ; Che, Yuzhi (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS) ; Zhou, Chen (Peking U., SKLNPT) ; Qu, Huilin (CERN) ; Ruan, Manqi (Beijing, Inst. High Energy Phys. ; Beijing, GUCAS)
To enhance the scientific discovery power of high-energy collider experiments, we propose and realize the concept of jet origin identification that categorizes jets into 5 quark species $(b,c,s,u,d)$, 5 anti-quarks $(\bar{b},\bar{c},\bar{s},\bar{u},\bar{d})$, and the gluon. Using state-of-the-art algorithms and simulated $\nu\bar{\nu}H, H\rightarrow jj$ events at 240 GeV center-of-mass energy at the electron-positron Higgs factory, the jet origin identification simultaneously reaches jet flavor tagging efficiencies ranging from 67% to 92% for bottom, charm, and strange quarks, and jet charge flip rates of 7% to 24% for all quark species. [...]
arXiv:2310.03440.-
2024-05-31 - 8 p.
- Published in : Phys. Rev. Lett. 132 (2024) 221802
Fulltext: 2310.03440 - PDF; Publication - 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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Forward-backward asymmetry in $B\to D^{*}\ell\nu$: One more hint for scalar leptoquarks?
/ Carvunis, Alexandre (Annecy, LAPTH) ; Crivellin, Andreas (CERN ; Zurich U. ; PSI, Villigen) ; Guadagnoli, Diego (CERN ; Annecy, LAPTH) ; Gangal, Shireen (Annecy, LAPTH)
Experimental data have provided intriguing hints for the violation of lepton flavour universality (LFU), including $B\to D^{(*)}\tau\nu/B\to D^{(*)}\ell\nu$, the anomalous magnetic moment of the muon and $b\!\to\! s\ell^+\ell^-$ with a significance of $\!>3\,\sigma$, $>\!4\,\sigma$ and $>\!5\,\sigma$, respectively. Furthermore, in a recent re-analysis of 2018 Belle data, it was found that the forward-backward asymmetry ($\Delta A_{\rm FB}$) of $B \to D^{*}\mu\bar \nu$ vs $B\to D^{*}e\bar \nu$ disagrees with the SM prediction by $\approx\!\!4\,\sigma$, providing an additional sign of LFU violation. [...]
arXiv:2106.09610; CERN-TH-2021-092; LAPTH-020/21; PSI-PR-21-12; ZU-TH 27/21.-
2022-02-01 - 7 p.
- Published in : Phys. Rev. D 105 (2022) L031701
Fulltext: PhysRevD.105.L031701 - PDF; 2106.09610 - PDF;
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