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Leonard S. Kisslinger

Publications and source records attributed to Leonard S. Kisslinger.

At least 19 recordsLinked to original sources
arXiv2025

Heavy Quark State Production via p-p and O-O Collisions

Here we have considered $J/Ψ$ is a normal charmonium meson, while $Ψ(2S)$ is a mixed hybrid charmonium meson. Similarly $Υ(1S)$ and$Υ(2S)$ are normal upsilon mesons, while $Υ(3S)$ is a mixed hybrid upsilon meson. We discuss the differential rapidity cross sections for $J/Ψ$, $Ψ(2S)$, $Υ(1S)$, $Υ(2S)$, $Υ(3S)$ production via p-p, and O-O collisions at proton-proton energy $\equiv \sqrt{s_{pp}}$= 5.44 TeV. The rapidity taken for the present study goes from y=-1 to 1.

hep-ph↗
arXiv2023

Properties of Infinite Nuclear Medium from QCD Sum Rules and the Neutron Star-Black Hole Mass Gap

A non-perturbative framework is provided to connect QCD with nuclear phenomenology in the intermediate and high density regime. Using QCD Sum Rules, in-medium scalar and vector self-energies of nucleons are calculated as functions of the density of an infinite nuclear medium. The self-energies are used in the relativistic mean field theory lagrangian of a high-density nuclear medium to find the binding energy of in-medium nucleons and the value of light quark condensate, $\langle \bar{q} q \rangle_{\rm{vac}} = -~(0.288 ~\rm{GeV})^3$, in the Borel-improved resummation scheme. The critical mass of an ideal neutron star is obtained by coupling a uniform saturation energy density of cold, dense nuclear matter to Einstein equation in hydrostatic equilibrium. Since it is less likely for a neutron star core to avoid deconfinement and enter the rigid vector repulsion phase where the speed of sound can smoothly approach from conformal to causal limit, a gap should exist in the stellar mass spectrum, $[3.48M_\odot, 5.47M_\odot]$, where it would be rare to find any isolated, cold, non-rotating neutron star or a black hole.

hep-ph↗
arXiv2023

Heavy quark state production and suppression via Xe-Xe collisions at $\sqrt{s_{pp}}$=5.44 TeV

We estimate differential rapidity cross sections for $J/Ψ$, $Ψ(2S)$, $Υ(1S)$, $Υ(2S)$, and $Υ(3S)$ production; and $Ψ(2S)$ to $J/Ψ(1S)$, $Υ(3S)$ to $Υ(1S)$ suppression via Xe-Xe collisions at proton-proton energy $\equiv \sqrt{s_{pp}}$ =5.44 TeV. For the $Ψ(2S)$, $Υ(3S)$ states we use the mixed heavy quark hybrid theory, with these states being approximately 50\% standard and 50\% hybrid charmonium, bottomonium meson states.

hep-ph↗
arXiv2020

Gravitational Waves Created During the EWPT

We study gravitational waves generated by bubble expansion created during the Cosmological Electroweak Phase Transition (EWPT). The energy radiated via gravitational waves is produced by the stress-energy tensor created by the magnetic field produced by bubble collisions during the EWPT, which occured about $10{-11}$ seconds after the Big Bang.

physics.gen-ph↗
arXiv2020

$Ψ(2S)$ decay to $J/Ψ(1S)$ +2$π$ or $J/Ψ(1S)$ + $σ$ + 2$π$

The BES Collaboration has measured $Ψ(2S)$ decay to $J/Ψπ^+π^-$. Using the mixed hybrid theory for the $Ψ(2S)$ we estimate the decay to $J/Ψ(1S)$ + $σ$. Using the known $σ\rightarrow 2π$ coupling constant, we estimate the $Ψ(2S)$ to $J/Ψ(1S)$ + $2π$ decay rate and angular distribution. This is an extension of our previous research on $Ψ(2S)$ Decay to $J/Ψ(1S)$ +$σ$ + 2$π^o$, without the production of 2$π^o$, and with an estimate of the $σ\rightarrow π^+ + π^-$ transition.

hep-ph↗
arXiv2020

Z boson production via p-p and Pb-Pb collisions at $\sqrt{s_{pp}}$=5.02 TeV

We estimate the production of $Z^a$ bosons via p-p collisions using previous work on $J/Ψ$, $Ψ(2S)$ production in p-p collisions, with the new aspect being the creation of $Z^a$ bosons via quark interactions, with $a$ the component of a $Z$ vector boson. We then estimate the production of $Z^a$ bosons via Pb-Pb collisions using modification factors from previous publications.

hep-ph↗
arXiv2019

Gravitational Radiation From Pulsar Creation

We estimate the gravitational wave amplitude as a function of frequency produced during the creation of pulsars from the gravitational collapse of a massive star. The three main quantities needed are the magnitude of the magnetic field producing pulsar kicks, the temperature which determines the velocity of the pulsar and the duration time for the gravitational radiation.res

astro-ph.HE↗
arXiv2019

Top Quark Mixed Hybrid Meson and the Quark-Gluon Plasma

Using the method of QCD Sum Rules we estimate the energy of lowest energy top quark meson state with a hybrid admixture. This new estimate uses the previous estimates of hybrid charmonium and upsilon states, but with the mass of the top quark mass being much greater than the charm and bottom quark masses. We discuss production of mixed hybrid top quark mesons and possible detection of the creation of the Quark-Gluon Plasma via Relativistic Heavy Ion Collisions.

physics.gen-ph↗
arXiv2019

Neutrino Excess and Dark Photons

Recently an excess of electron neutrino, $ν_e$, events in a MiniBooNE experiment has been reported. An attempt to explain this anamoly was made in a theoretical analysis by introducing a new light Higgs Boson. In the present work we use a new neutrino interaction Z bosons producing Dark Photons to estimate an excess of $ν_μ\rightarrow ν_e$ events.

physics.gen-ph↗
arXiv2019

Transversly Polarized Proton-Proton Collisions and the Collins Fragmentation Function

The Sivers Function is briefly reviewed and the Collins Fragmentation Function to produce a hadron from a polarized quark is defined. We estimate $π^{+},π^{-}$ +X production, where X represents particles which are not detected, via proton collisions with a polarized proton target using the Collins Fragmentation Function derived using the gluon distribution functions for polarized p-p collisions at E=$\sqrt{s}$=200 GeV.

hep-ph↗
arXiv2019

Sivers Differential Cross Section for $π+X$ Production via $p^{\uparrow}+p$ Collisions, and the Quark Sivers Function

We recently estimated pion+X production via proton collisions with a polarized proton target to enable the Collins fragmentation function to be determined via future experiments. In the present article we first estimate the Silvers differential cross section obtianed from experiments with the target proton having both positive and negative polarizations, and then estimate the Sivers Function using quark distribution functions.

hep-ph↗
arXiv2019

Review of Dark Matter

In this review of Dark Matter we review dark matter as sterile neutrinos, fermions, with their present and possibly future detection via neutrino Oscillations. We review the creation of Dark Matter via interactions with the Dark Energy (quintesence) field. We also review bosons as dark matter, discussing a proposed search for dark photons. Since photons are vector bosons, if dark photons exist at least part of dark matter are vector bosons. Ongoing experimental detection of Dark Matter is reviewed.

physics.gen-ph↗
arXiv2019

$Ψ(2S)$ Decay to $J/Ψ(1S)$ + 2$π$ or $J/Ψ(1S)$ +$σ$ + 2$π$

The BES Collaboration has measured $Ψ(2S)$ decay to $J/Ψπ^+π^-$. Using the mixed hybrid theory for the $Ψ(2S)$ we estimate the decay to $J/Ψ(1S)$ + $σ$. Using the known $σ\rightarrow 2π$ coupling constant, we estimate the $Ψ(2S)$ to $J/Ψ(1S)$ + $2π$ decay rate and angular distribution. This is an extension of our previous research on $Ψ(2S)$ Decay to $J/Ψ(1S)$ +$σ$ + 2$π^o$, without the production of 2$π^o$, and with an estimate of the $σ\rightarrow π^+ + π^-$ transition.

hep-ph↗
arXiv2019

Charmed Baryon Decay to a Strange Baryon Plus a Pion Using QCD Sum Rules

This is an extension of the prediction of strange baryon decays to the decays of charmed baryons using QCD Sum Rules. Using QCD Sum Rules we estimate the decay $Λ^+_c (udc) \rightarrow Λ^o_s(uds)+ π^+$. Although some weak decays of the $Λ^+_c$ have been measured, since it is difficult to measure $Λ^+_c \rightarrow Λ^o_s+ π^+$ our estimates should be useful for future experiments

hep-ph↗
arXiv2017

B Production In p-p and A-A Collisions

This is an extension of our recent work on $D^+(c\bar{d}),D^o(c\bar{u})$ production from p-p and d-Au collisions to $B^+(b\bar{d}),B^o(b\bar{u})$ production from p-p and A-A collisions. The rapidity cross sections for $B^+(c\bar{d}),B^o(b\bar{u})$ production from both p-p and A-A collisions are estimated. Our present work makes use of previous work on $J/Ψ$, $Ψ'(2S)$, $Υ(nS)$ production in p-p and A-A collisions, with the main new aspect being the fragmentation probability, $D_{b \rightarrow b\bar{q}}$, which turns out to be similar to the fragmentation probability $D_{c \rightarrow c\bar{q}}$ used in our recent work.

hep-ph↗
arXiv2017

$Ψ$ and $Υ$ production via $\sqrt{s_{pp}}$=8 TeV p-Pb collisions

We estimate differential rapidity cross sections for $Ψ$ and $Υ$ production via p-Pb collisions at 8 TeV. We use the mixed heavy quark hybrid theory in which the $J/Ψ(1S),Υ(1S),Υ(2S)$ are standard mesons while the $Ψ(2S)$ and $Υ(3S)$ are mixed hybrids, approximately 50% standard $|q \bar{q}>$ states and 50% hybrid $|q \bar{q} g>$ states. This is an extension of previous work on heavy-quark state production via A-A collisions at RHIC.

hep-ph↗
arXiv2017

Heavy quark state production in Pb-Pb collisions at $\sqrt{s_{NN}}$=5.02 TeV

We estimate differential rapidity cross sections for $J/Ψ$, $Ψ(2S)$, $Υ(1S)$, $Υ(2S)$, and $Υ(3S)$ production via Pb-Pb collisions at proton-proton energy $\equiv \sqrt{s_{pp}}$ =5.02 TeV. For the $Ψ(2S)$, $Υ(3S)$ states we use the mixed heavy quark hyrid theory, with these states being approximately 50\% standard and 50\% hybrid charmonium, bottomonium meson states. This is an extension of previous work on heavy quark state production via Cu-Cu and Au-Au collisions at $\sqrt{s_{pp}}$=200 GeV.

hep-ph↗