scholarly journals Tidal deformability of strange quark planets and strange dwarfs

2021 ◽  
Vol 104 (12) ◽  
Author(s):  
Xu Wang ◽  
Abudushataer Kuerban ◽  
Jin-Jun Geng ◽  
Fan Xu ◽  
Xiao-Li Zhang ◽  
...  
Keyword(s):  
Strange Quark ◽  
Strange Dwarfs

scholarly journals Neutron Stars, Strange Pulsars and Strange Dwarfs

1996 ◽  
Vol 160 ◽  
pp. 135-136
Author(s):  
Fridolin Weber ◽  
Norman K. Glendenning
Keyword(s):  
Neutron Star ◽  
Neutron Stars ◽  
Strong Interaction ◽  
Ground State ◽  
Strange Quark ◽  
Complete Sequence ◽  
Strange Quark Matter ◽  
Compact Stars ◽  
Strange Dwarfs ◽  
Separate Class

The hypothesis that strange quark matter may be the absolute ground state of the strong interaction (not56Fe) has been raised independently by Boder and Witten. If the hypothesis is true, then a separate class of compact stars could exist, which are calledstrange matter stars. The properties of the complete sequence of such stars, which range from compact neutron-star-like strange stars to strange dwarfs to strange planets. The latter two constitute the strange counterparts of ordinary white dwarfs and planets, respectively. The properties of these objects are discussed in this paper.

ARE NEUTRON-RICH ELEMENTS PRODUCED IN THE COLLAPSE OF STRANGE DWARFS?

2006 ◽  
Vol 15 (02) ◽  
pp. 153-163 ◽  
Author(s):  
G. F. MARRANGHELLO ◽  
J. A. DE FREITAS PACHECO
Keyword(s):  
Strange Quark ◽  
Critical Mass ◽  
Chemical Yield ◽  
Strange Quark Matter ◽  
Hadronic Matter ◽  
Hybrid Star ◽  
Baryonic Number ◽  
The Galaxy ◽  
Strange Dwarfs ◽  
Hybrid Stars

The structure of strange dwarfs and that of hybrid stars with the same baryonic number is compared. There is a critical mass (M ≈ 0.24M⊙) in the strange dwarf branch, below which configurations with the same baryonic number in the hybrid star branch are more stable. If a transition occurs between both branches, the collapse releases an energy of about of 3 × 1050 erg , mostly in the form of neutrinos resulting from the conversion of hadronic matter onto strange quark matter. Only a fraction (~ 4%) is required to expel the outer neutron-rich layers. These events may contribute significantly to the chemical yield of nuclides with A ≥ 80 in the Galaxy, if their frequency is of about one per 1,500 years.

Strange Quark Matter as Dark Matter

2019 ◽  
Vol 22 (4) ◽  
pp. 311-317
Author(s):  
Hidezumi Terazawa
Keyword(s):  
Dark Matter ◽  
Quark Matter ◽  
Strange Quark ◽  
Strange Quark Matter ◽  
Quark Stars

New forms of matter such as super-hypernuclei (strange quark matter) and superhypernuclear stars (strange quark stars) as candidates for dark matter are discussed in some detail, based on the so-called "Bodmer–Terazawa–Witten hypothesis" assuming that they are stable absolutely or quasi-stable (decaying only weakly).

scholarly journals Standard Model prediction of the Bc lifetime

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Jason Aebischer ◽  
Benjamín Grinstein
Keyword(s):  
Standard Model ◽  
Model Prediction ◽  
Strange Quark ◽  
Standard Model Prediction ◽  
New Physics ◽  
Operator Product ◽  
Special Focus ◽  
Third Order ◽  
Clear Cut ◽  
The Standard Model

Abstract Applying an operator product expansion approach we update the Standard Model prediction of the Bc lifetime from over 20 years ago. The non-perturbative velocity expansion is carried out up to third order in the relative velocity of the heavy quarks. The scheme dependence is studied using three different mass schemes for the $$ \overline{b} $$ b ¯ and c quarks, resulting in three different values consistent with each other and with experiment. Special focus has been laid on renormalon cancellation in the computation. Uncertainties resulting from scale dependence, neglecting the strange quark mass, non-perturbative matrix elements and parametric uncertainties are discussed in detail. The resulting uncertainties are still rather large compared to the experimental ones, and therefore do not allow for clear-cut conclusions concerning New Physics effects in the Bc decay.

scholarly journals Was GW190814 a Black Hole–Strange Quark Star System?

2021 ◽  
Vol 126 (16) ◽  
Author(s):  
I. Bombaci ◽  
A. Drago ◽  
D. Logoteta ◽  
G. Pagliara ◽  
I. Vidaña
Keyword(s):  
Black Hole ◽  
Strange Quark ◽  
Quark Star ◽  
Star System

scholarly journals Strange quark star in dilaton gravity

2019 ◽  
Vol 19 (6) ◽  
pp. 078
Author(s):  
Alireza Peivand ◽  
Kazem Naficy ◽  
Gholam Hossein Bordbar
Keyword(s):  
Strange Quark ◽  
Quark Star ◽  
Dilaton Gravity

scholarly journals Bs → Kℓv form factors with 2+1 flavors

2018 ◽  
Vol 175 ◽  
pp. 13008 ◽  
Author(s):  
Yuzhi Liu ◽  
Jon A. Bailey ◽  
A. Bazavov ◽  
C. Bernard ◽  
C. M. Bouchard ◽  
...  
Keyword(s):  
Quark Mass ◽  
Strange Quark ◽  
Lattice Spacing ◽  
Light Quark ◽  
Form Factors ◽  
Ckm Matrix ◽  
Strange Quark Mass ◽  
Light Quark Mass ◽  
B Quark

Using the MILC 2+1 flavor asqtad quark action ensembles, we are calculating the form factors f0 and f+ for the semileptonic Bs → Kℓv decay. A total of six ensembles with lattice spacing from ≈ 0.12 to 0.06 fm are being used. At the coarsest and finest lattice spacings, the light quark mass m’l is one-tenth the strange quark mass m’s. At the intermediate lattice spacing, the ratio m’l/m’s ranges from 0.05 to 0.2. The valence b quark is treated using the Sheikholeslami-Wohlert Wilson-clover action with the Fermilab interpretation. The other valence quarks use the asqtad action. When combined with (future) measurements from the LHCb and Belle II experiments, these calculations will provide an alternate determination of the CKM matrix element |Vub|.

η and η’ scattering: A probe of the strange-quark (ss¯) content of the nucleon?

1990 ◽  
Vol 64 (26) ◽  
pp. 3115-3118 ◽  
Author(s):  
Carl B. Dover ◽  
Paul M. Fishbane
Keyword(s):  
Strange Quark
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