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This short review was prepared as an introduction to the Royal Society's 'Dark Matter' conference. It addresses the embarrassing fact that 95% of the universe is unaccounted for. Favoured dark matter candidates are axions or…

Astrophysics · Physics 2010-12-09 Martin J. Rees

Creation of strange quark stars through strong interaction deconfinement is studied based on modern estimates of hyperon formation in neutron stars. The hyperon abundance is shown to be large enough so that if strange quark matter (SQM) is…

Astrophysics · Physics 2007-05-23 Shmuel Balberg

Stars account for only about 0.5% of the content of the Universe; the bulk of the Universe is optically dark. The dark side of the Universe is comprised of: at least 0.1% light neutrinos; 3.5% +/- 1% baryons; 29% +/- 4% cold dark matter;…

Astrophysics · Physics 2007-05-23 Michael S. Turner

The strange-quark vector current form factors of the nucleon are analyzed within the framework of dispersion relations. Particular attention is paid to contributions made by $K\bar{K}$ intermediate states to the form factor spectral…

High Energy Physics - Phenomenology · Physics 2014-11-17 M. J. Musolf , H. -W. Hammer , D. Drechsel

We summarize three alternative extensions of the quark-valence picture of nucleon strangeness and spin, including (1) gluon spin in QCD, (2) Bjorken sum rule and QCD, (3) D--E meson mixing and tadpole leakage. All three approaches suggest…

High Energy Physics - Phenomenology · Physics 2007-05-23 L. Babukhadia , M. D. Scadron

Dense compact objects like neutron stars or black holes have always been one of Gerry Brown's favorite research topics. This is closely related to the effects of strangeness in nuclear physics. Here, we review the chiral Effective Field…

Nuclear Theory · Physics 2017-03-08 Ulf-G. Meißner , Johann Haidenbauer

In this contribution the role of strangeness in astrophysics is discussed and, more precisely, strange hadronic matter in the interior of neutron stars. A special attention is payed to certain phenomena involving strange hadronic matter,…

Nuclear Theory · Physics 2024-09-11 Laura Tolos

In this lecture we discuss the properties of dense hadronic matter inside neutron stars. In particular, we pay attention to the role of strangeness in the core of neutron stars, by analysing the presence of baryons and mesons with…

Nuclear Theory · Physics 2024-04-18 Laura Tolos

We derive a simple relation between strangeness neutrality and baryon-strangeness correlations. In heavy-ion collisions, the former is a consequence of quark number conservation of the strong interactions while the latter are sensitive…

High Energy Physics - Phenomenology · Physics 2020-01-22 Wei-jie Fu , Jan M. Pawlowski , Fabian Rennecke

There are at least three sources of cosmic quarks in the universe. One, the quark nuggets which may survive beyond a certain baryon number during the phase transition from quarks to hadrons microseconds after the big bang. These quark…

General Physics · Physics 2017-10-16 Bikash Sinha

By means of the quark mass density- and temperature- dependent model, it is found that the negative charge and the higher strangeness fraction are in favor of the stability of strange quark matter at finite temperature. A critical baryon…

Nuclear Theory · Physics 2007-05-23 Y. Zhang

Strangeness plays an important role in the study of quark matter since it indicates the rate at which new particles are being produced and therefore provides information about the degree of chemical equilibration reached in heavy ion…

Nuclear Theory · Physics 2007-05-23 J. Cleymans

The phase diagram of nuclear matter is extended to strangeness and antimatter. It offers fascinating features for heavy ion physics and astrophysics. We will discuss some regions of this phase diagram as strange matter at zero temperature,…

Nuclear Theory · Physics 2007-05-23 Juergen Schaffner

We assess the fragmentation of strange quark matter in astrophysical events, showing that the application of statistical multifragmentation models suggests that most of the fragments (strangelets) should belong to an unstable baryon number…

High Energy Astrophysical Phenomena · Physics 2015-04-15 J. E. Horvath , L. Paulucci Marinho

The discovery of nondiffuse sources of gravitational waves through compact-object mergers opens new prospects for the study of physics beyond the Standard Model. In this paper, we study the effects of a new force between quarks, suggested…

High Energy Physics - Phenomenology · Physics 2021-11-05 Jeffrey M. Berryman , Susan Gardner

In this thesis is studied three of the fundamental properties of clusters of matter made of quarks u, d and s called strangelets: the energy per baryon, the radius and the electric charge, all in the presence of intense magnetic fields and…

High Energy Physics - Phenomenology · Physics 2016-10-25 E. Lopez Fune , A. Perez Martinez

The strange form factors of the nucleon are studied in a two-component model consisting of a three-quark intrinsic structure surrounded by a meson cloud. A comparison with the available experimental world data from the SAMPLE, PVA4, HAPPEX…

Nuclear Theory · Physics 2008-11-26 R. Bijker

In this conference proceeding, we review important theoretical developments related to the production of strangeness in astrophysics. This includes its effects in supernova explosions, neutron stars, and compact-star mergers. We also…

High Energy Astrophysical Phenomena · Physics 2022-02-16 Veronica Dexheimer , Krishna Aryal

The chiral constituent quark model ($\chi$CQM) has been extended to calculate the flavor structure of the nucleon through the meson-nucleon sigma terms which have large contributions from the quark sea and are greatly affected by chiral…

High Energy Physics - Phenomenology · Physics 2015-05-28 Harleen Dahiya , Neetika Sharma

The properties of the nucleons in nuclear medium have been investigated in the context of the flux tube model incorporating strangeness $(s\bar{s})$ contribution to proton structure in conformity with the experimental indication. Proton is…

High Energy Physics - Phenomenology · Physics 2013-02-25 A. Chandar , A Bhattacharya , B. Chakrabarti