Xiao-Dong Ma

Chiral matching of dimension-7 baryon-number-violating operators and application to $Δ I = 3/2$ nucleon decays

Xiao-Dong Ma

We study chiral matching of dimension-7 (dim-7) baryon-number-violating operators in low-energy effective field theory. We show that all dim-7 operators can be classified into two…

Baryon-number-violating nucleon decays into a dark photon particle

Jin-Han Liang, Yi Liao, Xiao-Dong Ma +1

Baryon-number-violating (BNV) nucleon decays into a light new particle represent an exciting yet experimentally unexplored frontier. In this work, we systematically study nucleon d…

Comprehensive investigation of nucleon decays into one lepton plus two mesons

Wei-Qi Fan, Yi Liao, Xiao-Dong Ma

We systematically investigate baryon number violating (BNV) nucleon decays into one lepton ( $e, μ, ν / ν ˉ$ ) and two pseudoscalar mesons ( $π π, π η, π K$ ) within the low-energy effective…

Renormalization-group-improved constraints on dimension-7 baryon-number-violating operators

Yi Liao, Xiao-Dong Ma, Xiang Zhao

We study constraints on dimension-7 SMEFT baryon-number-violating operators from nucleon decays by incorporating full renormalization group (RG) running effects. At high new physic…

Light fermionic dark matter window in the scotogenic inverse seesaw model

Huan-Can Liang, Yi Liao, Xiao-Dong Ma +2

The origin of neutrino mass and the nature of dark matter (DM) remain unresolved puzzles in particle physics, and an appealing possibility is to address both in a unified picture.…

Systematic study of lepton-flavor-violating dark matter interactions via indirect detection in effective field theories

Sahabub Jahedi, Jin-Han Liang, Yi Liao +2

Lepton-flavor-violating (LFV) interactions involving dark matter (DM) particles remain a largely unexplored area. In this study, we systematically investigate LFV DM interactions w…

Nucleon decays into three leptons: contact contributions

Yi Liao, Xiao-Dong Ma, Xiang Zhao

Baryon number violating (BNV) nucleon decays into three leptons provide a unique probe of BNV interactions beyond the conventional two-body modes involving a single lepton and a li…

Nucleon decays into three leptons: Noncontact contributions

Jing Chen, Yi Liao, Xiao-Dong Ma +1

We investigate baryon number violating (BNV) nucleon decays into three leptons from noncontact contributions that are induced by dimension-6 (dim-6) BNV operators in low-energy eff…

hep-ph2025★ 2 cited

Probing lepton flavor violating dark matter scenarios via astrophysical photons and positrons

Jin-Han Liang, Yi Liao, Xiao-Dong Ma

In this Letter we explore, for the first time, the constraints on lepton flavor violating (LFV) dark matter (DM) scenarios via the astrophysical photons and positrons, including bo…

hep-ph2025★ 3 cited

Charged lepton flavor violating decays with a pair of light dark matter and muonium invisible decay

Sahabub Jahedi, Yi Liao, Xiao-Dong Ma

In this paper, we initiate the study of lepton flavor violating (LFV) dark matter (DM) interactions, expanding our focus beyond the flavor-conserving DM interactions typically cons…

hep-ph2025★ 3 cited

Chiral perturbation theory for baryon-number-violating nucleon decay into a vector meson

Yi Liao, Xiao-Dong Ma, Hao-Lin Wang

In a recent work [New chiral structures for baryon number violating nucleon decays, arXiv:2504.14855], we identified generic baryon-number-violating (BNV) structures containing tri…

hep-ph2025★ 3 cited

RGE solver for the complete dim-7 SMEFT interactions and its application to $0 ν β β$ decay

Yi Liao, Xiao-Dong Ma, Hao-Lin Wang +1

We present an automatic renormalization group equations (RGEs) solver, D7RGESolver, designed for the precise numerical solution of one-loop RGEs of dimension-7 (dim-7) operators wi…

hep-ph2025★ 5 cited

Light dark-matter window constrained by \boldmath $K^{+} \to π^{+}$ $+$ $\neq E$

Xiao-Gang He, Xiao-Dong Ma, Jusak Tandean +1

We explore the constraints on new physics from the recent NA62 observation of the kaon decay $K^{+} \to π^{+}$ + $\neq E$ with missing energy $\neq E$ in the context of a dark-ma…

hep-ph2025★ 4 cited

New chiral structures for baryon number violating nucleon decays

Yi Liao, Xiao-Dong Ma, Hao-Lin Wang

We examine the most general nucleon decay interactions that involve three light quarks without being acted upon by a derivative. We identify four generic operator structures that c…

Effective field theory for type II seesaw model --symmetric phase v.s. broken phase--

Yi Liao, Xiao-Dong Ma, Yoshiki Uchida

Effective field theory is an effective approach to parameterizing effects of high energy scale physics in low energy measurements. The two popular frameworks for physics beyond the…

hep-ph2025★ 14 cited

$B \to K +$ invisible, dark matter, and $C P$ violation in hyperon decays

Xiao-Gang He, Xiao-Dong Ma, Jusak Tandean +1

Recently the Belle II Collaboration has reported a measurement of the $B^{+} \to K^{+} ν ν ˉ$ rate that is higher than the standard-model expectation. Since the emitted neutrinos are un…

A systematic investigation on vector dark matter-nucleus scattering in effective field theories

Jin-Han Liang, Yi Liao, Xiao-Dong Ma +1

In this paper, we systematically investigate the general spin-one dark matter-nucleus interactions within the framework of effective field theories (EFT). We consider both the nonr…

hep-ph2024★ 5 cited

Baryon number violating hydrogen decay

Wei-Qi Fan, Yi Liao, Xiao-Dong Ma +1

Most studies on baryon number violating (BNV) processes in the literature focus on free or bound nucleons in nuclei, with limited attention given to the decay of bound atoms. Given…

Probing dimension-8 SMEFT operators through neutral meson mixing

Yi Liao, Xiao-Dong Ma, Hao-Lin Wang

We investigate the impact of effective interactions of dimension-8 (dim-8) operators in the standard model effective field theory (SMEFT) on neutral meson mixing, focusing on the $…

hep-ph2024★ 1 cited

A systematic investigation on dark matter-electron scattering in effective field theories

Jin-Han Liang, Yi Liao, Xiao-Dong Ma +1

In this paper, we systematically investigate the general dark matter-electron interactions within the framework of effective field theories (EFT). We consider both the non-relativi…

Nucleon Consumption and Mass-Energy Conversion Induced by Dark Matter

Shao-Feng Ge, Xiao-Dong Ma

We propose the nucleon consumption induced by dark matter (DM) as a new scenario to overcome the energy threshold of direct detection. It can be realized with proton ($χ+ p \righta…

hep-ph2024★ 12 cited

Revisiting general dark matter-bound-electron interactions

Jin-Han Liang, Yi Liao, Xiao-Dong Ma +1

In this Letter we revisit general dark matter (DM)-bound-electron interactions studied previously in the influential work [R. Catena {\it et al.,} Atomic responses to general dark…

Scalar dark matter explanation of the excess in the Belle II $B^{+} \to K^{+} +$ invisible measurement

Xiao-Gang He, Xiao-Dong Ma, Michael A. Schmidt +2

Recently Belle II reported the first measurement of $B^{+} \to K^{+} + invisible (inv)$ , which is $2.7 σ$ above the standard model (SM) prediction. If confirmed, this calls for new p…