General consequences of mass mixing between the ordinary Z boson and a relatively light Z_d boson, "dark" Z, arising from U(1)_d gauge symmetry, associated with hidden sector such as dark matter, are examined. New effects beyond kinetic emphasized. Z-Z_d introduces new source low energy parity violation well explored by possible future atomic planned polarized electron scattering experiments. Rare K (B) meson decays into pi (K) l^+ l^- (l = e, mu) nu anti-nu found to already place tight...

The muon ${g}_{\ensuremath{\mu}}\ensuremath{-}2$ discrepancy between theory and experiment may be explained by a light vector boson ${Z}_{d}$ that couples to the electromagnetic current via kinetic mixing with photon. We illustrate how existing electron ${g}_{e}\ensuremath{-}2$, pion Dalitz decay, other direct production data disfavor explanation if mainly decays into ${e}^{+}{e}^{\ensuremath{-}}$, ${\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$. Implications of dominant...

We propose that the LHC hints for a Higgs diphoton excess and muon $g\ensuremath{-}2\text{ }\text{ }({g}_{\ensuremath{\mu}}\ensuremath{-}2)$ discrepancy between theory experiment may be related by vectorlike ``leptons'' charged under both $U(1{)}_{Y}$ hypercharge ``dark'' $U(1{)}_{d}$. Quantum loops of such leptons can enhance rate also generically lead to $U(1{)}_{Y}\mathrm{\text{\ensuremath{-}}}U(1{)}_{d}$ kinetic mixing. The induced coupling light $U(1{)}_{d}$ gauge boson ${Z}_{d}$...

The muon anomalous magnetic moment exhibits a 3.6σ discrepancy between experiment and theory. One explanation requires the existence of light vector boson, Z(d) (the dark Z), with mass 10-500 MeV that couples weakly to electromagnetic current through kinetic mixing. Support for such solution also comes from astrophysics conjectures regarding utility U(1)(d) gauge symmetry in matter sector. In scenario, we show mixing ordinary Z boson introduces new source "dark" parity violation, which is...

Abstract Seronegative autoimmune encephalitis is without any identifiable pathogenic antibody. Although it a major subtype of encephalitis, many unmet clinical needs exist in terms characteristics, treatments and prognosis. In this institutional cohort study, patients diagnosed with seronegative available 2-year outcomes were analysed for the disease course, outcome prediction system, effect immunotherapy, necessity further immunotherapy at 6 or 12 months pattern brain atrophy. was...

Extensions of the Minimal Supersymmetric Standard Model (MSSM) with additional singlet scalar fields solve important mu-parameter fine tuning problem MSSM. We compute and compare neutral Higgs boson mass spectra, including one-loop corrections, following MSSM extensions: Next-to-Minimal (NMSSM), nearly-Minimal (nMSSM), U(1)'-extended (UMSSM) by performing scans over model parameters. find that Secluded (sMSSM) is identical to nMSSM if three scalars decouple. The dominant part corrections are...

We study the effects of an extra U(1)′ gauge boson with flavor changing couplings fermion mass eigenstates on certain B meson decays that are sensitive to such new physics contributions. In particular, we examine what extent current data Bd→φK and Bd→η′K may be explained in models, concentrating example which left-chiral. find within reasonable ranges parameters, Z′ contribution can readily account for anomaly SφKS but is not sufficient explain large branching ratio same parameter value....

A light vector boson, Z_d, associated with a "dark sector" U(1)_d gauge group has been introduced to explain certain astrophysical observations as well low energy laboratory anomalies. In such models, the Higgs boson may decay into X+Z_d, where X=Z, Z_d or \gamma. Here, we provide estimates of those rates functions coupling through either mass-mixing (e.g. via an enlarged mechanism) heavy new fermion loops and examine implied LHC phenomenology. Our studies focus on higher m_{Z_d} case, >...

The dark photon and the axion (or axionlike particle) are popular light particles of hidden sector. Each them has been actively searched for through couplings called vector portal portal. We introduce a new connecting (axion-photon-dark photon, axion-dark photon-dark photon), which emerges in presence two particles. This is genuinely couplings, not just from product portal, because internal structure these couplings. present simple model that realizes discuss why it warrants rich phenomenology.

We study the right-handed neutrino (RHN) dark matter candidate in minimal U(1) B−L gauge extension of standard model. The symmetry offers three RHNs which can address origin mass, relic matter, and matter-antimatter asymmetry universe. lightest among is taken as candidate, under B − L interaction. investigate various scenarios for this with correct density by means freeze-out or freeze-in mechanism. A viable RHN mass lies a wide range including keV to TeV scale. emphasize sub-electroweak...

A bstract We propose a novel scenario to explain the matter-antimatter asymmetry by twofold leptogenesis, wherein heavy Majorana neutrinos exhibit temperature-dependent masses and engage in CP -violating decays. This envisages two distinct phases of leptogenesis: one occurring above electroweak scale other below it. The sphaleron process converts first lepton baryon asymmetry, but not second due its decoupling. mechanism potentially explains significant discrepancy between asymmetries, as...

We place constraints on the number of relativistic degrees freedom and baryon asymmetry at epoch Big Bang Nucleosynthesis (BBN) recombination, using cosmic background radiation (CBR) data from Wilkinson Microwave Anisotropy Probe (WMAP), complemented by Hubble Space Telescope (HST) Key Project measurement constant, along with latest compilation deuterium abundances Hii region measurements primordial helium abundance. The agreement between derived values these key cosmological particle...

Abstract The quantity of free malondialdehyde (MDA) in liver tissues rats fed vitamin E‐deficient or‐supplemented diets for 43 wk was measured by a newly developed high performance liquid chromatographic (HPLC) method. Bound MDA quantified the same HPLC method after alkaline hydrolysis tissue homogenates. Tissues from animals showed levels about 15 times higher but bound less than 2 E‐supplemented animals. Free is major form tissues, predominant tissues. Conventional thiobarbituric acid...

We consider a scenario where supersymmetric model has multiple dark matter particles. Adding $U(1{)}^{\ensuremath{'}}$ gauge symmetry is well-motivated extension of the minimal standard (MSSM). It can cure problems MSSM such as $\ensuremath{\mu}$ problem or proton decay with high-dimensional lepton number and baryon violating operators which $R$ parity allows. An extra ($U$ parity) may arise residual discrete after spontaneously broken. The lightest $U$-parity particle (LUP) stable under new...

This study sought to evaluate the effect of simultaneous application arthrocentesis and occlusal splint.A retrospective 43 patients (3 males, 40 females) whose symptoms had improved was conducted at Department Oral Maxillofacial Surgery, Dong-A University Hospital between 2008 2010. Subjects were divided into three groups: Group A (17 with splints simultaneously applied), B (13 did not improve splints, undergoing after splint use for 8 weeks), C that only used splints). We compared these...

We present a model in which an up-type vectorlike quark (VLQ) is charged under new $U(1{)}_{d}$ gauge force kinetically mixes with the Standard Model hypercharge. The boson of dark photon, ${\ensuremath{\gamma}}_{d}$. Traditional searches for VLQs rely on decays into electroweak bosons $W$, $Z$, or Higgs. However, since no evidence has been found at Large Hadron Collider (LHC), it imperative to search other novel signatures beyond their traditional decays. As we show, if photon much less...

Background and Objectives: Malignant glioblastoma (GBM) is caused by abnormal proliferation of glial cells, which are found in the brain. The therapeutic effects surgical treatment, radiation therapy, chemo-therapy against GBM relatively poor compared with their other tumors. Luteolin abundant peanut shells also herbs plants, such as thyme, green pepper, celery. known to be effective obesity metabolic syndrome. anti-inflammatory, anti-cancer activities luteolin have been investigated. Most...

The temperature-dependent mass of the heavy neutrino can lead to second leptogenesis occurring below electroweak scale, potentially explaining large discrepancy between baryon and lepton asymmetries. We investigate this scenario further, exploring intricate interplay weak interaction processes within framework. It includes notable shifts in dominant decay channels neutrinos around symmetry breaking, along with resonance behavior scattering near <a:math...

We assay how inflationary models whose properties are dominated by the dynamics of a single scalar field constrained cosmic microwave background (CMB) data from Wilkinson Microwave Anisotropy Probe (WMAP). classify in plane defined horizon-flow parameters. Our approach differs that WMAP Collaboration we analyze only and take spectral shapes slow-roll inflation rather than power-law parameterizations spectra. The other information use is measurement h Hubble Space Telescope (HST) Key Project....

The left-handed sneutrino in the minimal supersymmetric standard model (MSSM) has been ruled out as a viable thermal dark matter candidate, due to conflicting constraints from direct detection experiments and measurement of relic density. intrinsic fine-tuning problem MSSM, however, motivates an extension with new $U(1{)}^{\ensuremath{'}}$ gauge symmetry. We show that $U(1{)}^{\ensuremath{'}}$-extended MSSM right-handed ${\stackrel{\texttildelow{}}{\ensuremath{\nu}}}_{R}$ becomes good...

The dark axion portal is a recently introduced between the standard model and sector. It connects both photon (or axionlike particle) to simultaneously through an anomaly triangle. While vector have been popular venues search for axion, respectively, new provides detection channels if they coexist. not result of simple combination two portals, its value determined by other values; it should be tested independently. In this paper, we discuss implications leptonic $g\ensuremath{-}2$, $B$...