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Dark-matter induced neutron-antineutron oscillations
Published 2025-01-01Subjects: Get full text
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Heavy-quark dominance and fine structure of excited heavy baryons $$\Sigma _{Q}$$ Σ Q , $$\Xi '_{Q}$$ Ξ Q ′ and $$\Omega _{Q}$$ Ω Q
Published 2024-12-01“…Abstract In the framework of the relativized quark model, the calculation of spin-orbit interactions is improved by considering the contribution from the light-quark cluster in a singly heavy baryon. It modifies the energy level splitting of the orbital excitation significantly and causes the emergence of fine structures for $$\Sigma _{Q}$$ Σ Q , $$\Xi '_{Q}$$ Ξ Q ′ and $$\Omega _{Q}$$ Ω Q baryons. …”
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Measurement of the production cross section of prompt $$\Xi ^0_{\textrm{c}}$$ Ξ c 0 baryons in p–Pb collisions at $$\sqrt{s_{{\textrm{NN}}}}=5.02$$ s NN = 5.02 TeV
Published 2025-01-01“…The $$\mathrm {\Xi _{c}^{0}}$$ Ξ c 0 nuclear modification factor ( $$R_{\textrm{pPb}}$$ R pPb ), calculated from the cross sections in pp and p–Pb collisions, is presented and compared with the $$R_{\textrm{pPb}}$$ R pPb of $$\mathrm {\Lambda _{c}^{+}}$$ Λ c + baryons. The ratios between the $$p_{\textrm{T}}$$ p T -differential production cross section of $$\mathrm {\Xi _{c}^{0}}$$ Ξ c 0 baryons and those of $$\mathrm {D^0}$$ D 0 mesons and $$\mathrm {\Lambda _{c}^{+}}$$ Λ c + baryons are also reported and compared with results at forward and backward rapidity from the LHCb Collaboration. …”
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Parameterizing the SFC Baryogenesis Model
Published 2015-01-01“…We have investigated the evolution of the baryon charge carrying field, the evolution of the baryon charge contained in the scalar field condensate, and the final value of the generated baryon charge on the model’s parameters: the gauge coupling constant α, the Hubble constant at the inflationary stage HI, the mass m, and the self-coupling constants λi.…”
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Backreacted Coulomb energy in the Skyrme model
Published 2025-01-01“…The Coulomb energies are slightly larger than phenomenological fits suggest, but only by about 3 – 22%, whereas the radii are within 15% errors, with the largest errors on the smallest baryon number (B = 4) and the smallest errors on the large baryon numbers.…”
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Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
Published 2010-01-01“…Due to the cosmic ultraviolet background radiation low-mass haloes show generally a reduced baryon fraction. We determine the characteristic mass below which dwarf galaxies are baryon deficient. …”
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Charm and Bottom hadron production with a coalescence plus fragmentation hadronization approach: AA system size scan down to pp collisions
Published 2025-01-01“…Heavy baryon production in pp, pA, and AA collisions at RHIC and LHC energies provides new challenges to the theoretical understanding of heavy-quark hadronization. …”
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Statistical and Dynamical Decoupling of the IGM from Dark Matter
Published 2011-01-01“…The dynamical reason of the decoupling is the difference of the nonlinear evolution of baryon fluid from that of collisionless dark matter. …”
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Calculation of Binding Energy and Wave Function for Exotic Hidden-Charm Pentaquark
Published 2021-01-01“…In this study, pentaquark Pc4380 composed of a baryon Σc, and a D¯∗ meson is considered. Pentaquark is as a bound state of two-body systems composed of a baryon and a meson. …”
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5σ tension between Planck cosmic microwave background and eBOSS Lyman-alpha forest and constraints on physics beyond ΛCDM
Published 2025-01-01“…We find that combined Planck cosmic microwave background, baryon acoustic oscillations, and supernovae data analyzed under Λ cold dark matter (ΛCDM) are in 4.9σ tension with the extended Baryon Oscillation Spectroscopic Survey (eBOSS) Lyα forest in inference of the linear matter power spectrum at wave number ∼1hMpc^{−1} and redshift = 3. …”
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Modular A4 invariance and leptogenesis
Published 2020-01-01“…It is shown that masses of right-handed neutrinos are about 1013 GeV in order to account for the observed baryon asymmetry of the universe. Furthermore, the positive sign of the baryon asymmetry is obtained only for the limited ranges of mixing angles and CP violation phases of active neutrinos, which can be tested by future neutrino experiments.…”
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Form factors of $$\varLambda _b^0 \rightarrow \varLambda _c(2595)^+$$ Λ b 0 → Λ c ( 2595 ) + within light-cone QCD sum rules
Published 2024-12-01“…Abstract In this work, we calculated the form factors of the weak decay process $$\varLambda _b^0 \rightarrow \varLambda _c(2595)^+$$ Λ b 0 → Λ c ( 2595 ) + , where the final charm baryon represents an excited state with spin-parity $$\frac{1}{2}^-$$ 1 2 - . …”
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Constraints on the parameters of the neutrino extension of the Standard Model
Published 2025-02-01“…Abstract Heavy neutral leptons (HNLs) are hypothetical particles proposed as a potential explanation for neutrino oscillations and the generation of the baryon asymmetry in the Universe. This paper focuses on HNLs with masses significantly above the electroweak scale. …”
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Clusters as a probe of the equation-of-state of strongly interacting matter
Published 2025-01-01“…In this study, we incorporate a momentum-dependent potential for the baryon-baryon interaction, derived from the soft EoS. …”
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One-dimensional QCD at finite density and its ’t Hooft-Veneziano limit
Published 2025-01-01“…Calculated are the partition function, free energy, the Polyakov loop expectation values, baryon density, quark condensate, meson and baryon correlation functions. …”
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A note on mass formula and Quark structure
Published 1988-01-01“…A simple proof of the Gelmann-Okubo mass formula for the baryon octet and decuplet is given in this note.…”
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Flavoured leptogenesis and CPμτ symmetry
Published 2020-01-01“…We deduce conditions under which the baryon asymmetry produced by the second RH neutrino plays an important role. …”
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Cosmic Microwave Background as a Thermal Gas of SU(2) Photons: Implications for the High-z Cosmological Model and the Value of H0
Published 2017-01-01“…Observationally, we rely on precise low-frequency intensity measurements in the CMB spectrum and on a recent model independent (low-z) extraction of the relation between the comoving sound horizon rs at the end of the baryon drag epoch and H0 (rsH0=const). We point out that the commonly employed condition for baryon-velocity freeze-out is imprecise, judged by a careful inspection of the formal solution to the associated Euler equation. …”
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