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相关论文: CP Violation and the Problem Measuring phi_1

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CP-violation in the Higgs sector remains a possible source of the baryon asymmetry of the universe. Recent differential measurements of signed angular distributions in Higgs boson production provide a general experimental probe of the CP…

This proceeding contribution presents the latest measurement of the CP-violation and other physics parameters in the $B_s^0 \to J/\psi \phi$ decay channel performed by the ATLAS, CMS and LHCb experiments. The measurements are based on a…

高能物理 - 实验 · 物理学 2020-08-20 Jhovanny Mejia-Guisao

The asymmetric B-factories have provided valuable information on CP violation so far. In particular, one of the angles of the Unitarity Triangle, phi1(=beta), has been measured by several approaches. Since FPCP2004, some measurements have…

高能物理 - 实验 · 物理学 2007-05-23 T. Hara

A time dependent angular analysis of the decay mode $B_s \rightarrow J/\psi \phi$ allows for the measurement of the mixing induced CP-violating phase $\phi_s$. Within the Standard Model $\phi_s$ is theoretically precisely predicted to be…

高能物理 - 实验 · 物理学 2019-08-13 Stephanie Hansmann-Menzemer

Charm physics has played all along a central role in particle physics, however the level of attention on it has tremendously increased in the last years because of the observation of "fast" $D^0-\bar{D}^0$ flavour oscillations and because…

高能物理 - 实验 · 物理学 2012-10-30 Michael Joseph Morello

The BaBar and Belle experiments have recently presented evidence for D-Dbar mixing. We explain the following points: (i) The measurements imply width difference $y \sim 0.01$. In the limit of small CP violation, the CP-odd state is…

高能物理 - 唯象学 · 物理学 2010-10-27 Yosef Nir

The salient features of CP-violating interactions in the standard electroweak theory and in a few of its popular extensions are discussed. Moreover a brief overview is given on the status and prospects of searches for CP non-conservation…

高能物理 - 唯象学 · 物理学 2009-10-31 W. Bernreuther

Sensitivity studies to the CP-violating parameters of the decay Bs->phi phi with the LHCb experiment are presented. The decay proceeds via a b->s s anti-s gluonic-penguin quark transition, which is sensitive to contributions from beyond the…

高能物理 - 唯象学 · 物理学 2007-05-23 J. F. Libby

We present the first measurement of polarization and CP-violating asymmetries in $B_s^0$ decays into two light vector mesons, $B_s^0 \to \phi\phi$, and an improved determination of its branching ratio using 295 decays reconstructed in a…

高能物理 - 实验 · 物理学 2012-08-27 CDF Collaboration

CP-violating effects in decays of B mesons offer a wide spectrum of probes for testing the phase structure of the quark-flavour sector of the Standard Model. After a brief discussion of the picture emerging from the current LHC data, the…

高能物理 - 唯象学 · 物理学 2015-06-22 Robert Fleischer

We explore charged-Higgs CP-violating effects in an intriguing two-Higgs doublet model which accords special status to the top quark. In this model the heaviness of the top quark originates naturally from the much larger VEV of the second…

高能物理 - 唯象学 · 物理学 2009-10-31 Ken Kiers , Amarjit Soni , Guo-Hong Wu

Recent results on B mixing and CP violation from the B-factory experiments, BABAR and Belle are summarized.

高能物理 - 实验 · 物理学 2014-11-17 Yibin Pan

I report on investigations of physics beyond the Standard Model using experiments designed to investigate $b$ quark and $c$ quark interactions. Generalized searches involving loop diagrams using heavy meson mixing and CP violation…

高能物理 - 唯象学 · 物理学 2013-07-02 Sheldon Stone

We present preliminary measurements of the CP asymmetry parameters in B^0 -> K^0_S K^0_S K^0_S decays, reconstructing two of the K^0_S into pi^+pi^- and one into pi^0pi^0. In a sample of 227M $B\bar B$ pairs collected by the BABAR detector…

高能物理 - 实验 · 物理学 2007-05-23 B. Aubert , BABAR Collaboration

This article summarises measurements of time-dependent CP asymmetries in decays of neutral B mesons to charm final states using data collected by the BaBar detector at the PEP-II asymmetric-energy B-factory. All results are preliminary…

高能物理 - 实验 · 物理学 2017-08-23 Katherine A. George

In these three lectures, I overview the theoretical framework of the flavour physics and CP violation. The first lecture is the introduction to the flavour physics. Namely, I give theoretical basics of the weak interaction. I follow also…

高能物理 - 唯象学 · 物理学 2014-07-01 Emi Kou

This paper has been removed by arXiv administrators because it overlaps gr-qc/0102077 and others. This paper also has excessive overlap with the following papers also written by the authors or their collaborators: gr-qc/0603027,…

广义相对论与量子宇宙学 · 物理学 2019-10-21 Mustafa Salti , Oktay Aydogdu

We present preliminary measurements of the CP asymmetries and branching fractions for B -> pi pi and B -> K pi decays. A total of 347 million BBbar events collected by the BABAR detector at the PEP-II asymmetric-energy e+e- collider at SLAC…

高能物理 - 实验 · 物理学 2007-05-23 The BABAR Collaboration , B. Aubert

A search for CP(T) violation is performed and the fractional difference between the $b$ and $\bar b$ hadron lifetimes is measured using reconstructed secondary vertices in inclusive B hadron decays culled from 3.1 million $Z^0 \to q \bar q$…

高能物理 - 实验 · 物理学 2009-09-25 R. Coxe

In this proceeding, results of searches for CP violation in charm decays using the full BABAR dataset are discussed. The parameter $A_{CP}$ in the decay $D^\pm\to\KS\pi^\pm$ is determined to be $(-0.39 \pm 0.13 \pm 0.10)%$. Meaurements of…

高能物理 - 实验 · 物理学 2011-09-09 R. M. White