4,512 research outputs found
Modulation of serum concentrations and hepatic metabolism of 17beta-estradiol and testosterone by amitraz in rats.
No full text
Branching fraction and CP asymmetry of the decays B+→K0Sπ+ and B+→K0SK+
Full text linkAn analysis of B+ → K0
Sπ+ and B+ → K0
S K+ decays is performed with the LHCb experiment. The pp
collision data used correspond to integrated luminosities of 1 fb−1 and 2 fb−1 collected at centre-ofmass
energies of
√
s = 7 TeV and
√
s = 8 TeV, respectively. The ratio of branching fractions and the
direct CP asymmetries are measured to be B(B+ → K0
S K+
)/B(B+ → K0
Sπ+
) = 0.064 ± 0.009 (stat.) ±
0.004 (syst.), ACP(B+ → K0
Sπ+
) = −0.022 ± 0.025 (stat.) ± 0.010 (syst.) and ACP(B+ → K0
S K+
) =
−0.21 ± 0.14 (stat.) ± 0.01 (syst.). The data sample taken at
√
s = 7 TeV is used to search for
B+
c
→ K0
S K+ decays and results in the upper limit ( fc · B(B+
c
→ K0
S K+
))/( fu · B(B+ → K0
Sπ+
)) <
5.8 × 10−2 at 90% confidence level, where fc and fu denote the hadronisation fractions of a ¯b
quark
into a B+
c or a B+ meson, respectively
Measurement of the time-dependent CP asymmetry in B0 -> J/ψ KS0 decays
Full text linkThis Letter reports a measurement of the CP violation observables SJ/ψK0S and CJ/ψK0S in the decay channel B0→J/ψK0S performed with 1.0 fb−1 of pp collisions at s√=7 TeV collected by the LHCb experiment. The fit to the data yields SJ/ψK0S=0.73±0.07(stat)±0.04(syst) and CJ/ψK0S=0.03±0.09(stat)±0.01(syst). Both values are consistent with the current world averages and within
expectations from the Standard Model
Measurement of the CP-violating phase \phi s in Bs->J/\psi\pi+\pi- decays
Full text linkMeasurement of the mixing-induced CP-violating phase phi_s in Bs decays is of prime importance in probing new physics. Here 7421 +/- 105 signal events from the dominantly CP-odd final state J/\psi pi+ pi- are selected in 1/fb of pp collision data collected at sqrt{s} = 7 TeV with the LHCb detector. A time-dependent fit to the data yields a value of phi_s=-0.019^{+0.173+0.004}_{-0.174-0.003} rad, consistent with the Standard Model expectation. No evidence of direct CP violation is found
Plant age-related resistance to Ralstonia solanacearum, the causal agent of bacterial wilt.
No full textA study of CP violation in B±→DK±B±→DK± and B±→Dπ±B±→Dπ± decays with D→KS0K±π∓ final states
Full text linkA first study of CP violation in the decay modes B± → [K0S K ±π∓]Dh± and B± → [K0S K ∓π±]Dh±, where h labels a K or π meson and D labels a D0 or D0 meson, is performed. The analysis uses the LHCb data set collected in pp collisions, corresponding to an integrated luminosity of 3 fb−1. The analysis is sensitive to the CP-violating CKM phase γ through seven observables: one charge asymmetry in each of the four modes and three ratios of the charge-integrated yields. The results are consistent with measurements of γ using other decay modes
A Model of CP violation from extra dimension
No full textWe construct a realistic model of CP violation in which CP is broken in the process of dimensional reduction and orbifold compactification from a five dimensional theories with SU(3)×SU(3)×SU(3) gauge symmetry. CP violation is a result of the Hosotani type gauge configuration in the higher dimension.補正完
Measurements of Branching fractions and CP Asymmetries of B→ηh decays
No full text在此篇論文中,我們使用了日本國家高能加速器中心B介子工廠(KEKB) 及其 Belle 偵測器。我們從 772×106 B介子對中分析了 B介子至η介子和h介子之二體稀有衰變與電荷宇稱對稱破壞。其中η介子由兩個光子或三個π介子重組而成。h介子則分別代表了帶電K介子，電π介子和中性K介子。
最後我們在 B->η K 和 B->η π 衰變中找到超過3σ的電荷宇稱對稱破壞徵兆。同時我們也首次量測到 B->η K^0衰變。We present the improved measurements of the B -> ηh branching fraction and CP asymmetries using a data sample of 711 fb−1 that contains 771.58 million BB pairs collected on Υ(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e− collider. Here h means π±, K± and
K0S . And η is selected in η -> γγ and η -> π+π−π0 decays.
The evidence of CP asymmetry for B± -> ηK± is found with 3.8 σ, and 3.0 σ in B± -> ηπ± CP asymmetry. The branching fraction of B0 -> ηK0 is observed with 5.4 σ standard deviation from zero
Antenatal treatment of chylothorax and cyctic hygroma with OK-432 in nonimmune hydrops fetalis.
No full text- …
