Nuclear Theory·nucl-th

Tuesday·October 12, 2021

19 papers—7 primary·12 cross-listed

01
[Submitted on 9 Oct 2021]
Singly heavy baryons in nuclear matter from an SU(3) chiral soliton model
Ho-Yeon Won🇰🇷 · Ulugbek Yakhshiev🇰🇷 · Hyun-Chul Kim🇰🇷
We investigate how the masses of the singly heavy baryons undergo changes in nuclear matter, based on a medium-modified SU(3) chiral soliton model. Having explained the bulk properties of nuclear matter, we discuss the masses of the singly heavy baryons in nuclear matter. We generalize the vector-meson Lagrangian including the heavy-meson soliton interaction. The mass spectrum of the singly heavy baryon are obtained with the effects of explicit SU(3) symmetry breaking considered as a perturbation. The results show that the mass of the singly heavy baryon mass in nuclear medium is rather sensitive to the medium modifications of the heavy meson mass.
Comments:
10 pages, 4 figures
Subjects:
Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph)
arXiv:
2110.04561 [pdf]
J.Phys.G(2022)·3 citations
02
[Submitted on 9 Oct 2021]
Relativistic second-order dissipative hydrodynamics from Zubarev's non-equilibrium statistical operator
Arus Harutyunyan🇦🇲 · Armen Sedrakian🇩🇪 · Dirk H. Rischke🇩🇪
We present a new derivation of relativistic second-order dissipative hydrodynamics for quantum systems using Zubarev's non-equilibrium statistical-operator formalism. This is achieved by a systematic expansion of the energy-momentum tensor and the charge current to second order in deviations from equilibrium. As a concrete example, we obtain the relaxation equations for the shear-stress tensor, the bulk-viscous pressure, and the charge-diffusion currents required to close the set of equations of motion for relativistic second-order dissipative hydrodynamics. We also identify new transport coefficients which describe the relaxation of dissipative processes to second order and express them in terms of equilibrium correlation functions, thus establishing new Kubo-type formulas for second-order transport coefficients.
Comments:
54 pages
Subjects:
Nuclear Theory (nucl-th); High Energy Astrophysical Phenomena (astro-ph.HE); High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Theory (hep-th)
arXiv:
2110.04595 [pdf]
Annals Phys.(2022)·28 citations
03
[Submitted on 10 Oct 2021]
Complementary Two-Particle Correlation Observables for Relativistic Nuclear Collisions
Mary Cody🇺🇸 · Sean Gavin🇺🇸 · Brendan Koch🇺🇸 · Mark Kocherovsky🇺🇸 · Zoulfekar Mazloum🇺🇸 · George Moschelli🇺🇸
Two-particle correlations are a widely used tool for studying relativistic nuclear collisions. Multiplicity fluctuations comparing charge and particle species have been studied as a possible signal for Quark-Gluon Plasma (QGP) and the QCD critical point. These fluctuation studies all make use of particle variances which can be shown to originate with a two-particle correlation function. Momentum correlations and covariances of momentum fluctuations, which arise from the same correlation function, have also been used to extract properties of the nuclear collision medium such as the shear viscosity to entropy density ratio, the shear relaxation time, and temperature fluctuations. Searches for critical fluctuations are also done with these correlation observables. We derive a mathematical relationship between several number and momentum density correlation observables and outline the different physics mechanisms often ascribed to each. This set of observables also contains a new multiplicity-momentum correlation. Our mathematical relation can be used as a validation tool for measurements, as a method for interpreting the relative contributions of different physics mechanisms on correlation observables, and as a test for theoretical and phenomenological models to simultaneously explain all observables. We compare an independent source model to simulated events from PYTHIA for all observables in the set.
Comments:
18 pages, 10 figures
Subjects:
Nuclear Theory (nucl-th)
arXiv:
2110.04884 [pdf]
PRC(2023)·9 citations
04
[Submitted on 11 Oct 2021]
Single-particle decomposition of nuclear surface diffuseness
Wataru Horiuchi
Nuclear surface diffuseness reflects spectroscopic information near the Fermi level. I propose a way to decompose the surface diffuseness into single-particle (s.p.) contributions in a quantitative way. Systematic behavior of the surface diffuseness of neutron-rich even-even O, Ca, Ni, Sn, and Pb isotopes is analyzed with a phenomenological mean-field approach. The role of the s.p. wave functions near the Fermi level is explored: The nodeless s.p. orbits form a sharp nuclear surface, while the nodal s.p. orbits contribute to diffusing the nuclear surface.
Comments:
18 pages, 14 figures, to appear in Prog. Theor. Exp. Phys
Subjects:
Nuclear Theory (nucl-th)
arXiv:
2110.04982 [pdf]
PTEP(2021)·17 citations
05
[Submitted on 8 Oct 2021]
Hot Neutron Star Matter and Proto-Neutron Stars
D. Farrell (SDSU)🇺🇸 · A. Alp (SDSU)🇺🇸 · W. Spinella (IVC)🇺🇸 · F. Weber (SDSU, UCSD)🇺🇸 · G. Malfatti (U. La Plata)🇦🇷 · M. G. Orsaria (U. La Plata)🇦🇷 · I. F. Ranea-Sandoval (U. La Plata, CONICET)🇦🇷
In this chapter, we investigate the structure and composition of hot neutron star matter and proto-neutron stars. Such objects are made of baryonic matter that is several times denser than atomic nuclei and tens of thousands times hotter than the matter in the core of our Sun. The relativistic finite-temperature Green function formalism is used to formulate the expressions that determine the properties of such matter in the framework of the density-dependent mean field approach. Three different sets of nuclear parametrizations are used to solve the many-body equations and to determine the models for the equation of state of ultra-hot and dense stellar matter. The meson-baryon coupling scheme and the role of the \{Delta}(1232) baryon in proto-neutron star matter are investigated in great detail. In addition, using the non-local three-flavor Nambu-Jona-Lasinio model to describe quark matter, the hadron-quark composition of dense baryonic matter at zero temperature is discussed briefly. General relativistic models of non-rotating as well as rotating proto-neutron stars are presented in part two of our study.
Comments:
62 pages, 34 figures; book chapter to appear in "New Phenomena and New States of Matter in the Universe: From Quarks to Cosmos", World Scientific, eds. Cesar Augusto Zen Vasconcellos, Peter Otto Hess, and Thomas Boller; ISBN 978-981-122-090-6
Subjects:
Nuclear Theory (nucl-th)
arXiv:
2110.05189 [pdf]
2 citations
06
[Submitted on 11 Oct 2021]
Nonperturbative two-pion exchange contributions to the nucleon-nucleon interaction in covariant baryon chiral perturbation theory
Chun-Xuan Wang🇨🇳 · Jun-Xu Lu🇨🇳 · Yang Xiao🇨🇳 · Li-Sheng Geng🇨🇳
We calculate the nonperturbative two-pion exchange (TPE) contributions to the $N N$ interaction in covariant baryon chiral perturbation theory. We study how the nonperturbative resummation affects the $N N$ phase shifts for partial waves with $J \geq 3$ and $L \leq 6$ . No significant differences are observed between the nonperturbative phase shifts and perturbative ones for most partial waves except for $^{3} D_{3}$ , for which the nonperturbative resummation greatly improves the description of the phase shifts. However, a significant cutoff dependence is found for this partial wave and a reasonable description of the phase shifts can only be obtained with a particular cutoff. Furthermore, we compare the so-obtained nonperturbative phase shifts with those obtained in the heavy baryon chiral perturbation theory. We show that the contributions from relativistic nonperturbative TPE are more moderate than those from the nonrelativistic TPE obtained in the dimensional regularization scheme. A proper convergence pattern is observed for most of the partial waves studied except for $^{3} F_{3}$ , $^{3} F_{4}$ , and $^{3} H_{6}$ , for which the subleading TPE contributions are a bit strong. We find that for $H$ and $I$ partial waves, the OPE alone can already describe the phase shifts reasonably well.
Comments:
17 pages, 11 figures, to appear in Physical Review C
Subjects:
Nuclear Theory (nucl-th); High Energy Physics — Experiment (hep-ex); High Energy Physics — Lattice (hep-lat); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)
arXiv:
2110.05278 [pdf]
PRC(2022)·14 citations
07
[Submitted on 11 Oct 2021]
Elastic proton scattering off non-zero spin nuclei
Matteo Vorabbi · Michael Gennari · Paolo Finelli · Carlotta Giusti · Petr Navrátil · Ruprecht Machleidt
In recent years, we constructed a microscopic optical potential (OP) for elastic nucleon-nucleus ( $N A$ ) scattering using modern approaches based on chiral theories for the nucleon-nucleon ( $N N$ ) interaction. The OP was derived at first order of the spectator expansion in Watson multiple scattering theory and its final expression was a folding integral between the $N N$ $t$ matrix and the nuclear density of the target. Two- and three-body forces are consistently included both in the target and in the projectile description. The purpose of this work is to apply our microscopic OP to nuclei characterized by a ground state of spin-parity quantum numbers $J^{π} \neq = 0^{+}$ . We extended our formalism to include the spin of the target nucleus. The full amplitudes of the $N N$ reaction matrix are retained in the calculations starting from two- and three-body chiral forces. We show a remarkable agreement with experimental data for the available observables and, simultaneously, provide reliable estimates for the theoretical uncertainties. This work paves the way toward a full microscopic approach to inelastic $N A$ scattering, showing that the derivation of optical potentials between states with $J^{π} \neq = 0^{+}$ is completely under control.
Subjects:
Nuclear Theory (nucl-th)
arXiv:
2110.05455 [pdf]
PRC(2022)·24 citations
08
[Submitted on 8 Oct 2021] (cross-list from hep-ph)
Quarkonium production in pNRQCD: the $P$ -wave case
Antonio Vairo🇩🇪
We review our recent understanding of quarkonium production at $e^{+} e^{-}$ and hadronic colliders from the point of view of potential non-relativistic QCD, and apply it to $P$ -wave charmonium and bottomonium inclusive production.
Comments:
Contribution to the proceedings of the 10th International Workshop on Charm Physics (CHARM 2020); 20 pages, 12 figures
Subjects:
High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); Nuclear Theory (nucl-th)
arXiv:
2110.04013 [pdf]
PoS(2021)·1 citation
09
[Submitted on 9 Oct 2021] (cross-list from nucl-ex)
Extension of the J-PARC Hadron Experimental Facility: Third White Paper
Kazuya Aoki🇯🇵 · Hiroyuki Fujioka🇯🇵 · Toshiyuki Gogami🇯🇵 · Yoshimasa Hidaka🇯🇵 · Emiko Hiyama🇯🇵 · Ryotaro Honda🇯🇵 · Atsushi Hosaka🇯🇵 · Yudai Ichikawa🇯🇵 · Masaharu Ieiri🇯🇵 · Masahiro Isaka🇯🇵 · Noriyoshi Ishii🇯🇵 · Takatsugu Ishikawa🇯🇵 and 31 other authors
The J-PARC Hadron Experimental Facility was constructed with an aim to explore the origin and evolution of matter in the universe through the experiments with intense particle beams. In the past decade, many results on particle and nuclear physics have been obtained at the present facility. To expand the physics programs to unexplored regions never achieved, the extension project of the Hadron Experimental Facility has been extensively discussed. This white paper presents the physics of the extension of the Hadron Experimental Facility for resolving the issues in the fields of the strangeness nuclear physics, hadron physics, and flavor physics.
Comments:
261 pages, 186 figures
Subjects:
Nuclear Experiment (nucl-ex); High Energy Physics — Experiment (hep-ex); Nuclear Theory (nucl-th); Instrumentation and Detectors (physics.ins-det)
arXiv:
2110.04462 [pdf]
130 citations
10
[Submitted on 9 Oct 2021] (cross-list from hep-ex)
Probing gluon helicity with heavy flavor at the EIC
Daniele Paolo Anderle🇨🇳 · Xin Dong🇺🇸 · Felix Hekhorn🇮🇹 · Matthew Kelsey🇺🇸 · Sooraj Radhakrishnan🇺🇸 · Ernst Sichtermann🇺🇸 · Lei Xia🇨🇳 · Hongxi Xing🇨🇳 · Feng Yuan🇺🇸 · Yuxiang Zhao🇨🇳
We propose a new measurement of the heavy flavor hadron double spin asymmetry in deep-inelastic scattering at a future Electron-Ion Collider (EIC) to constrain the polarized gluon distribution function inside the proton. Statistical projection on $D^{0}$ meson double spin asymmetry is calculated with an EIC central detector using an all-silicon tracker and vertexing subsystem. A first impact study was done by interpreting pseudo-data at next-to-leading order in QCD. The sensitivity of the experimental observable in constraining gluon helicity distribution in a wide range of parton momentum fraction $x$ has been investigated considering different beam energy configurations. This measurement complements the inclusive spin-dependent structure function measurement and provides an opportunity to constrain the gluon helicity distribution in the moderate $x$ region.
Comments:
10 pages, 9 figures
Subjects:
High Energy Physics — Experiment (hep-ex); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
arXiv:
2110.04489 [pdf]
PRD(2021)·11 citations
11
[Submitted on 9 Oct 2021] (cross-list from hep-lat)
Interglueball potential in lattice SU(N) gauge theories
Nodoka Yamanaka🇺🇸 · Atsushi Nakamura🇯🇵 · Masayuki Wakayama🇯🇵
The dynamics of the glueballs is important in the context of the experimental search as well as for understanding the non-Abelian gauge theory. The glueballs of the dark $S U (N_{c})$ Yang-Mills theory are also good candidates of dark matter. In this proceedings contribution, we report on the result of the lattice calculation of the interglueball potential of the Yang-Mills theory with the color numbers $N_{c} = 2, 3, 4$ , with a detailed inspection of the systematics due to the discretization.
Comments:
7 pages, 3 figures, proceedings of the 38th International Symposium on Lattice field theory (Lattice 2021), Zoom/Gather@Massachusetts Institute of Technology, July 2021
Subjects:
High Energy Physics — Lattice (hep-lat); High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
arXiv:
2110.04521 [pdf]
PoS(2022)·13 citations
12
[Submitted on 10 Oct 2021] (cross-list from hep-ph)
Searching for strange hidden-charm pentaquark state $P_{cs} (4459)$ in $γ p \to K^{+} P_{cs} (4459)$ reaction
Cai Cheng🇨🇳 · Feng Yang🇨🇳 · Yin Huang🇨🇳
We investigate the possibility of studying the strange hidden-charm pentaquark state $P_{cs} (4459)$ by photon-induced reactions on a proton target in an effective Lagrangian approach. The production process is described by the $t$ -channel $K^{-}$ exchange, the $u$ -channel $Λ$ exchange, the contract term, and the $s$ - channel nucleon pole. Our theoretical approach is based on the assumption that $P_{cs} (4459)$ with $J^{P} = 1/ 2^{-}$ or $J^{P} = 3/ 2^{-}$ can be interpreted as a molecule composed of $D ˉ^{*} Ξ_{c}$ . Using the coupling constants of the $P_{cs}^{J^{P}}$ to $γ Λ$ and $K^{-} p$ channels obtained from molecule picture of the $P_{cs}^{J^{P}} (4459)$ , the total cross-sections of the process $γ p \to P_{cs}^{J^{P}} K^{+}$ is evaluated. Our calculation indicates that the cross-section for $γ p \to P_{cs}^{1/ 2^{-}} K^{+}$ and $γ p \to P_{cs}^{3/ 2^{-}} K^{+}$ are of the order of 10.0 pb and 5.0 pb, respectively. In addition, we compute the cross-section by assuming $P_{cs} (4459)$ as a compact pentaquark and find it is quite different from the results of $D ˉ^{*} Ξ_{c}$ molecule. Those results can be measured in future experiments, such as the Electron-Ion Collider in China and the United States. And can be used to test the nature of the $P_{cs}$ .
Comments:
arXiv admin note: text overlap with arXiv:2107.03773
Subjects:
High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
arXiv:
2110.04746 [pdf]
PRD(2021)·21 citations
13
[Submitted on 10 Oct 2021] (cross-list from hep-ph)
System evolution of forward-backward multiplicity correlations in a multi-phase transport model
Yi-An Li🇨🇳 · Dong-Fang Wang🇨🇳 · Song Zhang🇨🇳 · Yu-Gang Ma🇨🇳
The initial geometry effect on forward-backward multiplicity correlations $C (N_{f}, N_{b})$ is studied in relativistic collisions between light nuclei by using a multiphase transport model (AMPT). It is found that tetrahedron $^{16}$ O + $^{16}$ O gives a more uniform and symmetrical fireball which produces a more isotropic distribution of final particles after the expansion and evolution, and leads to a small $C (N_{f}, N_{b})$ . Forward-backward multiplicity correlation could be taken as a useful probe to distinguish the pattern of $α$ -clustered $^{16}$ O in experiments by comparing the neighboring colliding nuclear systems like $^{14}$ N + $^{14}$ N and $^{19}$ F + $^{19}$ F.
Comments:
7 pages, 6 figures; accepted by Phys. Rev. C
Subjects:
High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
arXiv:
2110.04784 [pdf]
PRC(2021)·17 citations
14
[Submitted on 10 Oct 2021] (cross-list from hep-lat)
Anderson Metal-to-Critical Transition in QCD
Andrei Alexandru🇺🇸 · Ivan Horváth🇺🇸
A picture of thermal QCD phase change based on the analogy with metal-to-insulator transition of Anderson type was proposed in the past. In this picture, a low- $T$ thermal state is akin to a metal with deeply infrared (IR) Dirac modes abundant and extended, while a high- $T$ state is akin to an insulator with IR modes depleted and localized below a mobility edge $λ_{A} > 0$ . Here we argue that, while $λ_{A}$ exists in QCD, a high- $T$ state is not an insulator in such an analogy. Rather, it is a critical state arising due to a new singular mobility edge at $λ_{I R} = 0$ . This new mobility edge appears upon the transition into the recently proposed IR phase. As a key part of such a metal-to-critical scenario, we present evidence using pure-glue QCD that deeply infrared Dirac modes in the IR phase extend to arbitrarily long distances. This is consistent with our previous suggestion that the IR phase supports scale invariance in the infrared. We discuss the role of Anderson-like aspects in this thermal regime and emphasize that the combination of gauge field topology and disorder plays a key role in shaping its IR physics. Our conclusions are conveyed by the structure of Dirac spectral non-analyticities.
Comments:
5 pages, 5 figures; v2: minor improvements, published version
Subjects:
High Energy Physics — Lattice (hep-lat); cond-mat.dis-nn (cond-mat.dis-nn); High Energy Physics — Theory (hep-th); Nuclear Theory (nucl-th)
arXiv:
2110.04833 [pdf]
PLB(2022)·21 citations
15
[Submitted on 10 Oct 2021] (cross-list from hep-ph)
Nuclear matter effects on jet production at electron-ion colliders
Hai Tao Li🇺🇸 · Ze Long Liu🇺🇸 · Ivan Vitev🇺🇸
In these proceedings we report recent progress on understanding hadron and jet production in electron-nucleus collisions at the future Electron-Ion Collider [1,2]. These processes will play an essential role in the exploration of the partonic structure of nuclei and the study of parton shower evolution in strongly-interacting matter. We employ the framework of soft-collinear effective theory, generalized to include in-medium interactions, to present the first theoretical results for inclusive hadron and jet cross sections, as well as the jet charge modification in deep inelastic scattering on nuclei. We further demonstrate how to separate initial-state and final-state effects.
Comments:
6 pages, 4 figures. DIS2021 proceedings. Small comment on heavy flavor-tagged jets included
Subjects:
High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
arXiv:
2110.04858 [pdf]
SciPost Phys.Proc.(2022)·2 citations
16
[Submitted on 11 Oct 2021] (cross-list from hep-ph)
Generalized parton distributions and spin structures of light mesons from a light-front Hamiltonian approach
Lekha Adhikari🇺🇸 · Chandan Mondal🇨🇳 · Sreeraj Nair🇨🇳 · Siqi Xu🇨🇳 · Shaoyang Jia🇺🇸 · Xingbo Zhao🇨🇳 · James P. Vary🇺🇸
We present the generalized parton distributions (GPDs) for the valence quarks of the pion and the kaon in both momentum space and position space within the basis light-front quantization framework. These GPDs are obtained from the eigenvectors of a light-front effective Hamiltonian consisting of the holographic quantum chromodynamics (QCD) confinement potential, a complementary longitudinal confinement potential, and the color-singlet Nambu-Jona--Lasinio interactions for the valence quarks of mesons. We then calculate the generalized form factors of the pion and the kaon from the moments of these GPDs. Combining the tensor form factors with the electromagnetic form factors, we subsequently evaluate the impact parameter dependent probability density of transversely polarized quarks inside the pion and the kaon. The numerical results for the generalized form factors, tensor charges, as well as those for the probability densities and the transverse shift of the polarized densities are consistent with lattice QCD simulations and with chiral quark models.
Comments:
18 pages, 12 figures, 3 tables; minor modifications in text; accepted by PRD
Subjects:
High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
arXiv:
2110.05048 [pdf]
PRD(2021)·41 citations
17
[Submitted on 11 Oct 2021] (cross-list from nucl-ex)
Observation of a structure in the M $_{p η}$ invariant mass distribution near 1700 MeV/ $c^{2}$ in the $γ p \to p π^{0} η$ reaction
V. Metag🇩🇪 · M. Nanova🇩🇪 · J. Hartmann🇩🇪 · P. Mahlberg🇩🇪 · F. Afzal🇩🇪 · C. Bartels🇩🇪 · D. Bayadilov🇩🇪 · R. Beck🇩🇪 · M. Becker🇩🇪 · E. Blanke🇩🇪 · K.-T. Brinkmann🇩🇪 · S. Ciupka🇩🇪 and 65 other authors
The reaction $γ p \to p π^{0} η$ has been studied with the CBELSA/TAPS detector at the electron stretcher accelerator ELSA in Bonn for incident photon energies from threshold up to 3.1 GeV. This paper has been motivated by the recently claimed observation of a narrow structure in the M $_{N η}$ invariant mass distribution at a mass of 1678 MeV/ $c^{2}$ . The existence of this structure cannot be confirmed in the present work. Instead, for E $_{γ}$ = 1400 - 1500 MeV and the cut M $_{p π^{0}} \leq 1190$ MeV/ $c^{2}$ a statistically significant structure in the M $_{p η}$ invariant mass distribution near 1700 MeV/ $c^{2}$ is observed with a width of $Γ \approx 35$ MeV/ $c^{2}$ while the mass resolution is $σ_{r es}$ = 5 MeV/ $c^{2}$ . Increasing the incident photon energy from 1420 to 1540 MeV this structure shifts in mass from $\approx$ 1700MeV/c $^{2}$ to $\approx$ 1725 MeV/ $c^{2}$ ; the width increases to about 50 MeV/ $c^{2}$ and decreases thereafter. The cross section associated with this structure reaches a maximum of $\approx$ 100 nb around E $_{γ} \approx$ 1490 MeV (W $\approx$ 1920 MeV), which coincides with the $p a_{0}$ threshold. Three scenarios are discussed which might be the origin of this structure in the M $_{p η}$ invariant mass distribution. The most likely interpretation is that it is due to a triangular singularity in the $γ p \to p a_{0} \to p π^{0} η$ reaction
Comments:
16 pages, 18 figure
Subjects:
Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
arXiv:
2110.05155 [pdf]
EPJA(2021)·12 citations
18
[Submitted on 11 Oct 2021] (cross-list from hep-ph)
$η (1295) \to 3 π$ decays
N.N. Achasov🇷🇺 · G.N. Shestakov🇷🇺
The radially excited pseudoscalar state $η (1295)$ is still poorly understood [as well as its $S U (3)$ partners $π (1300)$ and $K (1460)$ ] and we want to attract attention experimenters to its comprehensive study. As for the main three-body decay $η (1295) \to η π π$ , here the main interest is the measurements of the shapes of the $η π$ and $π π$ mass spectra in which the contributions from the $a_{0} (980)$ resonance and the large $π π$ $S$ wave ( $σ$ ) should manifest themselves. To describe these mass spectra, we propose to use a simple isobar model with a single fitting parameter characterizing the relative intensity of the $a_{0} (980)$ and $σ$ state production. Our main goal is to discuss the dynamics of the isospin-breaking decays $η (1295) \to π^{+} π^{-} π^{0}$ and $η (1295) \to 3 π^{0}$ , whose experimental studies could continue the impressive story of isospin violations in the decays of light isoscalar mesons $ω \to 2 π$ , $η \to 3 π$ , $η^{'} \to 3 π$ , $η (1405) \to 3 π$ , and $f_{1} (1285) \to 3 π$ . We estimate the widths of the isospin-breaking decays $η (1295) \to 3 π$ produced via the mixing of the $π^{0} - η$ and $a_{0}^{0} (980) - f_{0} (980)$ states and also due to the $π^{0} (1300) - η (1295)$ mixing. Processes that have the potential for detecting $η (1295) \to 3 π$ decays are discussed.
Comments:
9 pages, 6 figures; v2: published version; abstract, introduction, and summary extended; two corrections inserted; references added
Subjects:
High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); Nuclear Theory (nucl-th)
arXiv:
2110.05209 [pdf]
PRD(2021)·2 citations
19
[Submitted on 11 Oct 2021] (cross-list from quant-ph)
Vortical Quantum Memory
Kazuki Ikeda🇨🇦 · Dmitri E. Kharzeev🇺🇸 · Yuta Kikuchi🇺🇸
Quantum memory is a crucial component of a quantum information processor, just like a classical memory is a necessary ingredient of a conventional computer. Moreover, quantum memory of light would serve as a quantum repeater needed for quantum communication networks. Here we propose to realize the quantum memory coupled to magnetic modes of electromagnetic radiation (e.g. those found in cavities and optical fibers) using vortices in Quantum Hall systems. We describe the response to an external magnetic mode as a quench, and find that it sets an oscillation between vortices and antivortices, with the period controlled by the amplitude of the magnetic mode, and the phase locked to the phase of the magnetic mode. We support our proposal by real-time Hamiltonian field theory simulations.
Comments:
9 pages, 8 figures
Subjects:
Quantum Physics (quant-ph); Mesoscale and Nanoscale Physics (cond-mat.mes-hall); High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Theory (hep-th); Nuclear Theory (nucl-th)
arXiv:
2110.05380 [pdf]
0 citations

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