English
Related papers

Related papers: Shedding light on dark matter with recent muon $(g…

200 papers

Recent precise measurement of the electron anomalous magnetic moment (AMM) adds to the longstanding tension of the muon AMM and together strongly point towards physics beyond the Standard Model (BSM). In this work, we propose a solution to…

High Energy Physics - Phenomenology · Physics 2020-06-30 Sudip Jana , Vishnu P. K. , Shaikh Saad

The Belle II collaboration recently announced that they observed the $B^+ \!\to K^+\nu\bar{\nu}$ decay process for the first time. This dineutrino mode of $B^+ \!\to K^+\nu\bar{\nu}$ has been theoretically identified as a very clean…

High Energy Physics - Phenomenology · Physics 2025-04-03 Shu-Yu Ho , Jongkuk Kim , Pyungwon Ko

Gauged $U(1)_{L_\mu - L_\tau}$ model has been advocated for a long time in light of muon $g-2$ anomaly, which is a more than $3\sigma$ discrepancy between the experimental measurement and the standard model prediction. We augment this model…

High Energy Physics - Phenomenology · Physics 2017-04-05 Sudhanwa Patra , Soumya Rao , Nirakar Sahoo , Narendra Sahu

We update the constraints on two-Higgs-doublet models (2HDMs) focusing on the parameter space relevant to explain the present muon $g$$-$$2$ anomaly, $\Delta a_{\mu}$, in four different types of models, type I, II, "lepton specific" (or X)…

High Energy Physics - Phenomenology · Physics 2015-06-22 Alessandro Broggio , Eung Jin Chun , Massimo Passera , Ketan M. Patel , Sudhir K. Vempati

The very precise measurement of the anomalous magnetic moment of the muon, recently released by the Muon g-2 experiment at Fermilab, can serve to set stringent constraints on new particles. If the observed 4$\sigma$ discrepancy from the…

High Energy Physics - Phenomenology · Physics 2021-12-24 J. C. Criado , A. Djouadi , N. Koivunen , K. Müürsepp , M. Raidal , H. Veermäe

A brief review is given of the implications of the recent Brookhaven result on the muon anomaly ($a_{\mu}$) for supersymmetry. We focus mainly on the implications of the recent results for the minimal supergravity unified model. We show…

High Energy Physics - Phenomenology · Physics 2011-01-27 Utpal Chattopadhyay , Pran Nath

The 3.6 \sigma discrepancy between the predicted and measured values of the anomalous magnetic moment of positive muons can be explained by the existence of a new dark boson Z_\mu with a mass in the sub-GeV range, which is coupled…

High Energy Physics - Phenomenology · Physics 2015-05-21 S. N. Gninenko , N. V. Krasnikov , V. A. Matveev

Recently the ATLAS collaboration reported a 3 sigma excess in the search for the events containing a dilepton pair from a Z boson and large missing transverse energy. Although the excess is not sufficiently significant yet, it is quite…

High Energy Physics - Phenomenology · Physics 2015-10-05 Xiaochuan Lu , Satoshi Shirai , Takahiro Terada

We revisit a set of dark sector models, motivated by anomalies observed in $B$ decays and the muon anomalous magnetic moment, in the light of a recently reported diphoton excess around 750$\,$GeV. Interpreting the excess as a scalar…

High Energy Physics - Phenomenology · Physics 2016-11-02 Geneviève Bélanger , Cédric Delaunay

More than $3\sigma$ deviations from the standard model are observed in the angular observable $P'_5$ of $B\to K^* \mu^+ \mu^-$ and muon $g-2$. To resolve these anomalies, we extend the standard model by adding two leptoquarks. It is found…

High Energy Physics - Phenomenology · Physics 2016-12-07 Chuan-Hung Chen , Takaaki Nomura , Hiroshi Okada

It is well known that excessively heavy supersymmetric particles (sparticles) are disfavored to explain the $(g-2)_\mu$ anomaly, but some people overlook that moderately light sparticles are also disfavored by the LHC probes of…

High Energy Physics - Phenomenology · Physics 2022-10-18 Junjie Cao , Fei Li , Jingwei Lian , Yusi Pan , Di Zhang

We studied an extension of the standard model with a fourth generation of fermions to explain the discrepancy in the muon $(g-2)$ and explain the positron excess seen in the AMS-02 experiment. We introduce a gauged $SU(2)_{HV}$ horizontal…

High Energy Physics - Phenomenology · Physics 2015-06-19 Gaurav Tomar , Subhendra Mohanty

The exo-Higgs model can accommodate a successful baryogenesis mechanism that closely mirrors electroweak baryogenesis in the Standard Model, but avoids its shortcomings. We extend the exo-Higgs model by the addition of a singlet complex…

High Energy Physics - Phenomenology · Physics 2018-02-01 Hooman Davoudiasl , Pier Paolo Giardino , Cen Zhang

The recent Fermilab measurement of the muon anomalous magnetic moment yields $4.2 \sigma$ deviations from the SM prediction when combined with the BNL E821 experiment results. In the Type-X two Higgs doublet model, we study the consequence…

High Energy Physics - Phenomenology · Physics 2021-11-24 Adil Jueid , Jinheung Kim , Soojin Lee , Jeonghyeon Song

In 2018, the CMS collaboration reported a di-photon excess around 95.3 GeV with a local significance of 2.8 $\sigma$. Interestingly, the CMS collaboration also reported a di-tau excess recently at 95 $\sim$ 100 GeV with a local significance…

High Energy Physics - Phenomenology · Physics 2023-09-19 Weichao Li , Haoxue Qiao , Jingya Zhu

Dark matter particles annihilating into Standard Model fermions may be able to explain the recent observation of a gamma-ray excess in the direction of the Galactic Center. Recently, a hidden photon model has been proposed to explain this…

High Energy Physics - Phenomenology · Physics 2015-06-04 Samuel D. McDermott

The long-standing muon $g-2$ anomaly has been confirmed recently at the Fermilab. The combined discrepancy from Fermilab and Brookhaven results shows a difference from the theory at a significance of 4.2 $\sigma$. In addition, the LHC has…

High Energy Physics - Phenomenology · Physics 2021-06-04 Wen Yin

The new measurement of the anomalous magnetic moment of muon at the Fermilab Muon $g-2$ experiment has strengthened the significance of the discrepancy between the standard model prediction and the experimental observation from the BNL…

High Energy Physics - Phenomenology · Physics 2021-10-11 Kwang Sik Jeong , Junichiro Kawamura , Chan Beom Park

We chose the $\mu$-term extended next-to-minimal supersymmetric standard model ($\mu$NMSSM) for this work, and the phenomenological research is based on the assumption of double Higgs resonance state as the Standard Model (SM)-like Higgs…

High Energy Physics - Phenomenology · Physics 2022-08-30 Liangliang Shang , XiaoFeng Zhang , Zhaoxia Heng

The FNAL+BNL measurements for muon $g-2$ is $4.2\sigma$ above the SM prediction, and the Berkeley $^{133}$Cs measurement for the fine-structure constant $\alpha_{\rm em}$ leads to the SM prediction for electron $g-2$ which is $2.4\sigma$…

High Energy Physics - Phenomenology · Physics 2022-04-01 Song Li , Yang Xiao , Jin Min Yang