Li-Ping He

activity

20132026

most citedMasses of Doubly Heavy Tetraquarks with Error Bars

76 citations · 372 across the 20 of their papers we have counts for

collaborators

20 papers

hep-ph2026

Neutrinoless double-beta decay of the $Δ^{-}$ resonance

Li-Ping He, Feng-Kun Guo, Ulf-G. Meißner +3

The subprocess $nn \to pp e^{-} e^{-}$ is a key ingredient in the interpretation of nuclear neutrinoless double-beta decay. Intermediate $Δ$ resonances may provide additional enhancements…

hep-ph2026

Neutrinoless double beta decays of hyperons in covariant chiral perturbation theory

Zi-Ying Zhao, Ze-Rui Liang, Feng-Kun Guo +2

Neutrinoless double beta ( $0 ν β β$ ) decays of spin-1/2 hyperons are investigated in a covariant baryon chiral perturbation theory framework, extended by a $Δ L = 2$ operator proportiona…

hep-ph2026

Hyperon neutrinoless double beta decays in chiral perturbation theory

Zi-Ying Zhao, Ze-Rui Liang, Feng-Kun Guo +2

We study the neutrinoless double beta decays of spin-1/2 hyperons, $B_{1}^{-} \to B_{2}^{+} ℓ^{-} ℓ^{-}$ with $B_{1}^{-} \in {Σ^{-}, Ξ^{-}}$ and $B_{2}^{+} \in {p, Σ^{+}}$ , which violate lepton number…

hep-ph2023

Charm-Meson $t$ -channel Singularities in an Expanding Hadron Gas

Eric Braaten, Roberto Bruschini, Li-Ping He +2

We study the time evolution of the numbers of charm mesons after the kinetic freezeout of the expanding hadron gas produced by the hadronization of the quark-gluon plasma from a ce…

hep-ph2023

Thermal Energy of a Charm-meson Molecule in a Pion Gas

Eric Braaten, Li-Ping He, Kevin Ingles +1

The thermal corrections to the propagator of a loosely bound charm-meson molecule in a pion gas are calculated to next-to-leading order in the heavy-meson expansion using a zero-ra…

hep-ph2022★ 2 cited

Evolution of charm-meson ratios in an expanding hadron gas

Eric Braaten, Roberto Bruschini, Li-Ping He +2

We study the time evolution of the numbers of charm mesons after the kinetic freeze-out of the hadron gas produced by a central heavy-ion collision. The $π D^{*} \to π D^{*}$ react…

hep-ph2022★ 32 cited

Triangle Singularity in the Production of $T_{cc}^{+}$ (3875) and a Soft Pion

Eric Braaten, Li-Ping He, Kevin Ingles +1

The double-charm tetraquark meson $T_{cc}^{+} (3875)$ can be produced in high-energy proton-proton collisions by the creation of the charm mesons $D^{*+} D^{0}$ at short distances follo…

hep-ph2020★ 43 cited

Production of $X (3872)$ at High Multiplicity

Eric Braaten, Li-Ping He, Kevin Ingles +1

The dependence of the production of the $X (3872)$ meson on the hadron multiplicity in $pp$ collisions has been used as evidence against $X$ being a charm-meson molecule. The argume…

hep-ph2020★ 19 cited

Galilean-Invariant XEFT at Next-to-Leading Order

Eric Braaten, Li-Ping He, Jun Jiang

XEFT is a low-energy effective field theory for charm mesons and pions that provides a systematically improvable description of the $X (3872)$ resonance. To simplify calculations be…

hep-ph2020★ 76 cited

Masses of Doubly Heavy Tetraquarks with Error Bars

Eric Braaten, Li-Ping He, Abhishek Mohapatra

In the heavy-quark limit, the two heavy quarks in a doubly heavy baryon or a doubly heavy tetraquark are bound by their color-Coulomb potential into a compact diquark. The doubly h…

hep-ph2020★ 26 cited

Charm-meson Triangle Singularity in $e^{+} e^{-}$ Annihilation into $D^{* 0} D ˉ^{0} + γ$

Eric Braaten, Li-Ping He, Kevin Ingles +1

We calculate the cross section for $e^{+} e^{-}$ annihilation into $D^{* 0} D ˉ^{0} + γ$ at center-of-mass energies near the $D^{* 0} D ˉ^{* 0}$ threshold under the assumption that $X(…

hep-ph2019★ 11 cited