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Recently reported anomalies in various $B$ meson decays and also in the anomalous magnetic moment of muon $(g-2)_\mu$ motivate us to consider a particular extension of the standard model incorporating new interactions in lepton and quark…

高能物理 - 唯象学 · 物理学 2023-01-18 Kayoung Ban , Yongsoo Jho , Youngjoon Kwon , Seong Chan Park , Seokhee Park , Po-Yan Tseng

In addition to the long-standing anomalies seen in the muon $g-2$, $R_{K^{(*)}}$, and $R_{D^{(*)}}$ observables by various independent experiments, the CDF Collaboration has found another significant one in the $W$-boson mass. These…

高能物理 - 唯象学 · 物理学 2022-12-16 Arvind Bhaskar , Anirudhan A. Madathil , Tanumoy Mandal , Subhadip Mitra

We show that a single vector leptoquark can explain both the muon $g-2$ anomaly recently measured by the Muon g-2 experiment at Fermilab, and the various $B$ decay anomalies, including the $R_{D^{(*)}}$ and $R_{K^{(*)}}$ anomalies which…

高能物理 - 唯象学 · 物理学 2021-04-13 Mingxuan Du , Jinhan Liang , Zuowei Liu , Van Que Tran

The CDF collaboration recently announced a new measurement result of the $W$ boson mass, and it is in tension with the standard model (SM) prediction. In this paper, we explain this anomaly in the vector-like quark (VLQ) $(X,T,B)_{L,R}$ and…

高能物理 - 唯象学 · 物理学 2023-02-20 Shi-Ping He

We present a unified explanation for the $B$-decay anomalies in $R_{D^{(\ast)}}$ and $R_{K}$ together with the anomalous muon magnetic moment, consistent with the constraints from the current measurements of leptonic decay rates and…

高能物理 - 唯象学 · 物理学 2016-11-02 Diganta Das , Chandan Hati , Girish Kumar , Namit Mahajan

At present, there are outstanding discrepancies between standard model predictions and measurements of the muon's $g-2$ and several $B$-meson properties. We resolve these anomalies by considering a two-Higgs-doublet model extended to…

高能物理 - 唯象学 · 物理学 2020-02-12 Alakabha Datta , Jonathan L. Feng , Saeed Kamali , Jacky Kumar

We show that, up to plausible uncertainties in BR$(B_c\to \tau \nu)$, the $R_2$ leptoquark can simultaneously explain the observation of anomalies in $R_{K^{(*)}}$ and $R_{D^{(*)}}$ without requiring large couplings. The former is achieved…

高能物理 - 唯象学 · 物理学 2019-09-04 Oleg Popov , Michael A. Schmidt , Graham White

In this study, we investigate muon $g-2$, $R_{K^{(*)}}$, and $R_{D^{(*)}}$ anomalies in a specific model with one doublet, one triplet, and one singlet scalar leptoquark (LQ). When the strict limits from the $\ell' \to \ell \gamma$, $\Delta…

高能物理 - 唯象学 · 物理学 2017-11-22 Chuan-Hung Chen , Takaaki Nomura , Hiroshi Okada

Data from the Muon g-2 experiment and measurements of the fine structure constant suggest that the anomalous magnetic moments of the muon and electron are at odds with standard model expectations. We survey the ability of…

高能物理 - 唯象学 · 物理学 2021-08-04 Wai-Yee Keung , Danny Marfatia , Po-Yan Tseng

Motivated by the long-standing tension in the muon anomalous magnetic moment (AMM) and persistent observations of B-physics anomalies in $R_{D^{(\ast)}}$ and $R_{K^{(\ast)}}$ ratios, we construct a simple two-loop radiative neutrino mass…

高能物理 - 唯象学 · 物理学 2020-07-29 Shaikh Saad

We discuss a model with a SU$(2)_L$ doublet vector leptoquark (LQ), motivated by the recent experimental results relating to the lepton universality of $\overline{B} \to D^{(*)} \tau \overline{\nu}_\tau$. We find that scalar operators…

高能物理 - 唯象学 · 物理学 2023-11-27 Syuhei Iguro , Yuji Omura

We extend the contents of the standard model (SM) by introducing TeV-scale scalar leptoquarks to generate neutrino masses and explain some current observed deviations from the SM predictions, including the anomalous magnetic moments of…

高能物理 - 唯象学 · 物理学 2022-11-23 Shao-Long Chen , Wen-wen Jiang , Ze-Kun Liu

Leptoquark (LQ) models can be the solution to the $(g-2)_{\mu}$ anomaly because of the chiral enhancements. In this work, we consider the models extended by the LQ and vector-like quark (VLQ) simultaneously, which can be used to explain the…

高能物理 - 唯象学 · 物理学 2022-06-24 Shi-Ping He

We propose a leptoquark model simultaneously to explain anomalies of muon anomalous magnetic dipole moment and $b\to s \mu\bar\mu$ in light of experimental reports very recently. Here, we satisfy several stringent constraints such as…

高能物理 - 唯象学 · 物理学 2021-09-08 Takaaki Nomura , Hiroshi Okada

We present an economical model where an $S^{}_1$ leptoquark and an anomaly-free $U(1)^{}_X$ gauge symmetry with $X = B^{}_3-2L^{}_\mu/3-L^{}_\tau/3$ are introduced, to account for the muon anomalous magnetic moment $a^{}_\mu \equiv…

高能物理 - 唯象学 · 物理学 2022-08-26 Xin Wang

Very recently, a substantial $7\sigma$ deviation of the $W$-boson mass from the Standard Model (SM) prediction has been reported by the CDF collaboration. Furthermore, the Muon g-2 Experiment recently confirmed the longstanding tension in…

高能物理 - 唯象学 · 物理学 2022-10-05 Talal Ahmed Chowdhury , Shaikh Saad

The recent precise measurement of the $W$-mass by the CDF II collaboration is indicative of new physics beyond the Standard Model. On the other hand, a resolution of the longstanding muon $g-2$ anomaly also calls for additional dynamics. In…

高能物理 - 唯象学 · 物理学 2022-06-24 Nabarun Chakrabarty

The latest results of CDF-II collaboration show a discrepancy of $7\sigma$ with standard model expectations. There is, also, a $4.2\sigma$ discrepancy in the measurement of muon magnetic moment reported by Fermilab. We study the connection…

高能物理 - 唯象学 · 物理学 2022-07-19 Simran Arora , Monal Kashav , Surender Verma , B. C. Chauhan

We entertain the option of scalar leptoquarks to explain the anomalies in the semi-leptonic decays of $B$-mesons and the discrepancies in the lepton $(g-2)_l$'s including the recent results at Fermilab E989. The $R_{K^{(*)}}$ and…

高能物理 - 唯象学 · 物理学 2021-07-14 Hyun Min Lee

We examine electron and muon anomalous magnetic dipole moments within a radiative neutrino mass model featuring TeV-scale scalar leptoquarks $S(3,1,-1/3)$ and $R(3,2,1/6)$. We utilize textures with decoupling electron and muon sectors, so…

高能物理 - 唯象学 · 物理学 2026-02-19 Bayu Dirgantara , J. Julio
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