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2017-06-22
16:48
arXiv [PUBDB-2017-05897] Preprint/Report
; ; ; et al
Search for $CP$ violation and measurement of the branching fraction in $D^{0} \to K^0_S K^0_S$ decay
[arXiv:1705.05966; Belle-Preprint-2017-03; KEK-Preprint-2016-64]
We report a study of the decay $D^0 \to K^0_S K^0_S$ using 921~fb$^{-1}$ of data collected at or near the $\Upsilon(4S)$ and $\Upsilon(5S)$ resonances with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. The measured time-integrated CP asymmetry is $ A_{CP}(D^0 \to K^0_S K^0_S) = (-0.02 \pm 1.53 \pm 0.02 \pm 0.17) \%$ and the branching fraction is $\mathcal{B} (D^{0}\rightarrow K_{S}^{0}K_{S}^{0})$ = (1.32 $\pm$ 0.02 $\pm$ 0.04 $\pm$ 0.04) $\times$ 10$^{-4}$, where the first uncertainty is statistical, the second is systematic, and the third is due to the normalization mode ($D^0 \to K_S^0 \pi^0$) used in the analysis. [...]
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2017-06-22
16:33
arXiv [PUBDB-2017-05893] Report/Journal Article
; ; ; et al
Observation of an alternative $\chi_{c0}(2P)$ candidate in $e^+ e^- \rightarrow J/\psi D \bar{D}$
[BELLE-PREPRINT-2017-07; KEK-PREPRINT-2017-3; arXiv:1704.01872] ddc:530
We perform a full amplitude analysis of the process $e^+ e^- \rightarrow J/\psi D \bar{D}$, where $D$ refers to either $D^0$ or $D^+$. A new charmoniumlike state $X^*(3860)$ that decays to $D \bar{D}$ is observed with a significance of $6.5\sigma$. [...]
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2017-06-22
16:23
arXiv [PUBDB-2017-05887] Report/Journal Article
; ; ; et al
First measurement of $\boldsymbol{T}$-odd moments in $\boldsymbol{D^{0} \rightarrow K_{S}^{0} \pi^{+} \pi^{-} \pi^{0}}$ decays
[BELLE-PREPRINT-2017-01; KEK-PREPRINT-2016-62; arXiv:1703.05721] ddc:530
We report the first measurement of the T-odd moments in the decay D0→KS0π+π-π0 from a data sample corresponding to an integrated luminosity of 966 fb-1 collected by the Belle experiment at the KEKB asymmetric-energy e+e- collider. From these moments we determine the CP-violation-sensitive asymmetry aCPT-odd=[-0.28±1.38(stat.)-0.76+0.23(syst.)]×10-3, which is consistent with no CP violation. [...]
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2017-06-22
16:12
arXiv [PUBDB-2017-05882] Report/Journal Article
; ; ; et al
Measurement of the $\tau$ lepton polarization and $R(D^*)$ in the decay $\bar{B} \to D^* \tau^- \bar{\nu}_\tau$
[KEK-PREPRINT-2016-53; BELLE-PREPRINT-2016-14; arXiv:1612.00529] ddc:550
We report the first measurement of the τ lepton polarization Pτ(D*) in the decay B¯→D*τ-ν¯τ as well as a new measurement of the ratio of the branching fractions R(D*)=B(B¯→D*τ-ν¯τ)/B(B¯→D*ℓ-ν¯ℓ), where ℓ- denotes an electron or a muon, and the τ is reconstructed in the modes τ-→π-ντ and τ-→ρ-ντ. We use the full data sample of 772×106 BB¯ pairs recorded with the Belle detector at the KEKB electron-positron collider. [...]
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2017-06-22
14:25
[PUBDB-2017-05847] Report/Journal Article
; ; ; et al
A second Higgs doublet in the early universe: baryogenesis and gravitational waves
[DESY-16-213] ddc:530
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2017-06-20
18:26
[PUBDB-2017-05670] Journal Article
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Structural stability of high entropy alloys under pressure and temperature
ddc:530
The stability of high-entropy alloys (HEAs) is a key issue before their selection for industrial appli-cations. In this study,in-situhigh-pressure and high-temperature synchrotron radiation X-raydiffraction experiments have been performed on three typical HEAs Ni20Co20Fe20Mn20Cr20,Hf25Nb25Zr25Ti25, and Re25Ru25Co25Fe25(at. [...]
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2017-06-20
13:38
[PUBDB-2017-05557] Journal Article
; ; ; et al
Design and control of microstructure and texture by thermomechanical processing of a multi-phase TiAl alloy
ddc:600
Sheets made of intermetallic γ-TiAl based alloys possess promising engineering properties for lightweight hightemperatureapplications. Due to the complexity of their manufacturing, however, they are still not fullycommercialised. [...]
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2017-06-20
13:22
[PUBDB-2017-05548] Journal Article
; ; ; et al
High-speed fixed-target serial virus crystallography
ddc:570
We report a method for serial X-ray crystallography at X-ray free-electron lasers (XFELs), which allows for full use of the current 120-Hz repetition rate of the Linear Coherent Light Source (LCLS). Using a micropatterned silicon chip in combination with the high-speed Roadrunner goniometer for sample delivery, we were able to determine the crystal structures of the picornavirus bovine enterovirus 2 (BEV2) and the cytoplasmic polyhedrosis virus type 18 polyhedrin, with total data collection times of less than 14 and 10 min, respectively. [...]
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2017-06-20
10:08
[PUBDB-2017-05480] Journal Article
; ; ; et al
Transition and Alkali Metal Complex Ternary Amides for Ammonia Synthesis and Decomposition
ddc:540
A new complex ternary amide Rb2[Mn(NH2)4], whichsimultaneously contains both transition and alkali metal catalyticsites, is developed. This is in line with the recently reported TMLiHcomposite catalysts, which have been shown to effectivelybreak the scaling relations and achieve ammonia synthesisunder mild conditions. [...]
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2017-06-06
15:05
arXiv [PUBDB-2017-04367] Preprint/Report
;
Two-loop top and bottom Yukawa corrections to the Higgs-boson masses in the complex MSSM
[DESY-17-065; arXiv:1705.07909]
Results for the two-loop corrections to the Higgs-boson masses of the MSSM with complex parameters of $\mathcal{O}{\left(\alpha_t^2+\alpha_t\alpha_b+\alpha_b^2\right)}$ from the Yukawa sector in the gauge-less limit are presented. The corresponding self-energies and their renormalization have been obtained in the Feynman-diagrammatic approach. [...]

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