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Though the predictions of the Standard Model (SM) are in excellent agreement with experiments there are still several theoretical problems associated with the Higgs sector of the SM, where it is widely believed that some "new physics"... more
The VINCY Cyclotron is the main part of the TESLA Accelerator Installation. The diameter of the pole of this machine is 2000 mm. Its bending constant is 145 MeV while its focusing constant is 75 MeV. The radiofrequency system of the... more
The CMS muon system has been aligned using cosmic-ray muons collected in 2008 and beam-halo muons from the 2008 LHC circulating beam tests. After alignment, the resolution of the most sensitive coordinate is 80 microns for the relative... more
Using a sample of 14 million $\psip$ events collected with the BESII detector, branching fractions or upper limits on the branching fractions of $\psip$ decays into $\gamma\ppb$, $\gamma 2(\pip\pim)$, $\gamma \kskp$, $\gamma... more
The cross sections for D 0 D0 and D + D -production at 3.773 GeV have been measured with BES-II detector at BEPC. These measurements are made by analyzing a data sample of about 17.3 pb -1 collected at the center-of-mass energy of 3.773... more
The absolute branching fractions for the decays D 0 → K -e + ν e and D 0 → π -e + ν e are determined using 7584 ± 198 ± 341 singly tagged D0 sample from the data collected around 3.773 GeV with the BES-II detector at the BEPC. In the... more
The absolute inclusive semileptonic branching fraction of the D s meson has been measured based on 22.3 pb Ϫ1 of e ϩ e Ϫ collision data collected with the Beijing Spectrometer at ͱsϭ4.03 GeV. At this energy, the
Using the data of about 33 pb -1 collected at and around 3.773 GeV with the BES-II detector at the BEPC collider, we have studied the exclusive semileptonic decays The absolute branching fractions for the decays are measured to be BF (D +... more
We report measurements of the observed cross sections for e + e -→ ωπ + π -, ωK + K -, ωpp, .773 and 3.650 GeV. Upper limits (90% C.L.) are given for observed cross sections and for ψ(3770) decay branching fractions for production of... more
Using 58 million J/ψ events taken with the BESII detector, a search for ηc CP violating decays into ππ and K K has been performed. No clear ηc signal is observed, and upper limits for B(ηc → ππ) and B(ηc
Using 58 million J/ψ events accumulated with the BES II detector, branching fractions for the ηc → V V decays, ηc → ρρ, ηc → K * K * , ηc → ωω, and ηc → φφ, are measured. The branching fractions are Br(ηc → ρρ) = (1.25 ± 0.37 ± 0.51) × 10... more
The reconstructed kinematics of the isotropically emitted $K^0\overline{K}^0$ and their decay vertex following a $p\overline{p}$ annihilation at rest allows to select events with specific neutral kaon topology {\it and} energy. Thus, from... more
Abstract: The implication of the fourth-generation quarks in the B-> K^* l^+ l^-(l= mu, tau) decays, when K^* meson is longitudinally or transversely polarized, is presented. In this context, the dependence of the branching ratio with... more
The most general Two Higgs Doublet Model potential without explicit CP violation depends on 10 real independent parameters . Excluding spontaneous CP violation results in two 7 parameter models. Although both models give rise to 5 scalar... more
Flavour changing neutral currents are absent at tree level in the Standard Model (SM) and are highly suppressed at higher orders due the Glashow-Iliopoulos-Maiani mechanism. Hence, any evidence of such currents related to the top quark... more
We report a search for CP violation in the decay modes s → K 0 S π ± using a data set corresponding to an integrated luminosity of 469 fb -1 collected with the BABAR detector at the PEP-II asymmetric energy e + e -storage rings. The decay... more
We consider the possibility of observing CP violation in quasi-inclusive decays of the type B -→ K -X, B -→ K * -X, B0 → K -X and B0 → K * -X, where X does not contain strange quarks. We present estimates of rates and asymmetries for... more
Recent theoretical predictions suggest that CP violation in charmed baryon decays could be an order of magnitude larger than previously expected. While this is attributed to final-state interactions within the Standard Model, the ultimate... more
We present a comprehensive analysis of dark matter stability under the Unified Resonant Framework (URF), demonstrating that proton decay operators are systematically excluded by resonance-based conservation laws. Using explicit Effective... more
This report presents the calculation of the tau lepton mass using the parameter of the W boson within the Mo framework. By employing the tau parameter t τ , we compute the tau mass and compare it to the Standard Model (SM) value reported... more
We establish the potential existence of natural relations between the Cabibbo angle and the quark mass ratios, in a Standard Model with one Higgs doublet and two quark generations. The argument is based on the calculation of the divergent... more
The aim of this paper is to establish and prove some results on common fixed point for a pair of multi-valued mappings in complex valued $b$-metric spaces. Our results generalize and extend a few results in the literature.
We present a unified, quantitatively testable account of neutrino mass and flavor oscillations within the Helix-Light-Vortex (HLV) framework. In HLV, leptons arise as quantized helical eigenmodes of a discrete, dodecahedral quasicrystal... more
Within the M o framework, the muon magnetic anomaly is expressed through a compact relation connecting the muon and electron magnetic anomalies (a µ , a e) and the fine-structure constant α. Reformulating this relation leads to a... more
We present a closed, fit-free, and first-principles prediction of the neutrino mass hierarchy in normal ordering by extending to the neutral sector the same formalism that explains the charged-lepton hierarchy. The construction follows... more
We derive a parameter-free, shell-level prediction for the electroweak mixing angle θW from the same Relator-shell geometry that fixes the fine-structure constant, without phenomenological tuning. Neutral-sector alignment on the shell... more
The CAST (CERN Axion Solar Telescope) experiment is searching for axions, an hypothetical particle that emerges as a possible solution to the well known CP violation problem in strong interactions. CAST is using a decommissioned LHC... more
We report a search for CP violation in the decay modes s → K 0 S π ± using a data set corresponding to an integrated luminosity of 469 fb -1 collected with the BABAR detector at the PEP-II asymmetric energy e + e -storage rings. The decay... more
We compute the full one-loop Electro-Weak (EW) contributions of O(α S α 3 EM ) entering the electron-positron into a quark-antiquark pair plus one gluon cross section at the Z peak and LC energies in presence of polarisation of the... more
Using a data sample corresponding to an integrated luminosity of 0:35 fb À1 collected by LHCb in 2011, we report the first evidence of CP violation in the decays of B 0 s mesons to K AE Ç pairs, A CP ðB 0 s ! KÞ ¼ 0:27 AE 0:08ðstatÞ AE... more
Submitted for the DNP20 Meeting of The American Physical Society Improving the ft value of 37K via a precision measurement of the branching ratio 1 ASIM OZMETIN, DAN G. MELCONIAN, VICTOR E. IACOB, PRAVEEN SHIDLING, VELI SAKARI KOLHINEN,... more
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or... more
The first observation of the Cabibbo-suppressed decay Λ 0 b → J/ψ pπ -is reported using a data sample of proton-proton collisions at 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb -1 . A prominent signal is observed and... more
A search for CP violation in D + → φπ + decays is performed using data collected in 2011 by the LHCb experiment corresponding to an integrated luminosity of 1.0 fb -1 at a centre of mass energy of 7 TeV. The CP -violating asymmetry is... more
The LHCb experiment is dedicated to precision measurements of CP violation and rare decays of B hadrons at the Large Hadron Collider (LHC) at CERN (Geneva). The initial configuration and expected performance of the detector and associated... more
In this work we propose an extension to the Standard Model in which we consider the model 2HDM type-III plus massive neutrinos and the horizontal flavor symmetry S_3 (ν2HDM⊗ S_3). In the above framework and with the explicit breaking of... more
We discuss the implications of assuming a four-zero Yukawa texture for the properties of the charged Higgs boson within the context of the general 2-Higgs Doublet Model of Type III. We present the charged Higgs boson couplings with heavy... more
We realize a model-independent study of the so-called Tri-Bi-Maximal pattern of leptonic flavor mixing. Different charged lepton mass matrix textures are studied. In particular, we are interested in those textures with a minimum number of... more
The vertices h±W∓h0 and h±W∓a0, involving the gauge bosons W, the lightest charged (h), the lightest CP-even neutral (h0), and the lightest CPodd neutral (a0) Higgs bosons, arise within the context of many extensions of the SM, and they... more
Linking LFV Higgs decays h→ `i`j with CP violation in multi-scalar models E. Barradas-Guevara, 2, ∗ J. Lorenzo Diaz-Cruz, 2, † O. Félix-Beltrán, 3, ‡ and U. J. Saldana-Salazar 2, § Centro de Internacional de F́ısica Fundamental,... more
In our days, CP (Charge Parity) violation in the Standar Model of fundamental interactions still remains as an open problem. It is well known that explicit CP violation may be included by impossing complex Yukawa couplings in the Yukawa... more
Conditions for spontaneous Charge-Parity (CP) violation in the scalar potential sector of general S(3) Higgs-doublet model (3HDM) are analyzed. An analysis of the Higgs sector of the minimal S(3)-invariant extension of the Standard Model... more
In this paper, I have considered the most general Higgs singlet extension of the Standard Model. Complex and real Higgs singlet scenarios are considered separately which contain two extra scalar particles and one extra scalar particle,... more
The preponderance of matter over antimatter in the early Universe, the dynamics of the supernova bursts that produced the heavy elements necessary for life and whether protons eventually decay — these mysteries at the forefront of... more
hietinger 2) , A . S c hopper 4) , P . S c h une 14) , A. Soares 14) , L . T auscher 2) , C. Thibault 12) , F . T ouchard 11) , C . T ouramanis 4) , F . T riantis 8) , D.A. Tr oster 2) , E . V an Beveren 5) , C.W.E. Van Eijk 6) , G . V... more
Reactor and accelerator-based neutrino experiments have played a critical role in the understanding of neutrino oscillations and are currently dominating the high-precision measurements of neutrino oscillation parameters. The discovery of... more