4,789 research outputs found
Branching fraction and CP asymmetry of the decays B+→K0Sπ+ and B+→K0SK+
No full textAn 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
No full textThis 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
No full textMeasurement 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
A study of CP violation in B±→DK±B±→DK± and B±→Dπ±B±→Dπ± decays with D→KS0K±π∓ final states
No full textA 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
The mass-hierarchy and CP-violation discovery reach of the LBNO long-baseline neutrino experiment
No full textThe next generation neutrino observatory proposed by the LBNO collaboration will address fundamental questions in particle and astroparticle physics. The experiment consists of a far detector, in its first stage a 20 kt LAr double phase TPC and a magnetised iron calorimeter, situated at 2300 km from CERN and a near detector based on a highpressure argon gas TPC. The long baseline provides a unique opportunity to study neutrino flavour oscillations over their 1st and 2nd oscillation maxima exploring the L/E behaviour, and distinguishing effects arising from δ CP and matter.
In this paper we have reevaluated the physics potential of this setup for determining the mass hierarchy (MH) and discovering CP-violation (CPV), using a conventional neutrino beam from the CERN SPS with a power of 750 kW. We use conservative assumptions on the knowledge of oscillation parameter priors and systematic uncertainties. The impact of each systematic error and the precision of oscillation prior is shown. We demonstrate that the first stage of LBNO can determine unambiguously the MH to > 5σ C.L. over the whole phase space. We show that the statistical treatment of the experiment is of very high importance, resulting in the conclusion that LBNO has ~ 100% probability to determine the MH in at most 4-5 years of running. Since the knowledge of MH is indispensable to extract δ CP from the data, the first LBNO phase can convincingly give evidence for CPV on the 3σ C.L. using today’s knowledge on oscillation parameters and realistic assumptions on the systematic uncertainties
Literacy instruction and cerebral palsy (Murphy et al., 2023)
No full textPurpose: Some children with cerebral palsy (CP) have difficulty acquiring conventional reading and writing skills. This systematic review explores the different types of literacy instruction and their effects on the reading and writing skills of children with CP.
Method: Relevant studies published between 2000 and 2020 were identified using electronic databases and terms related to CP and literacy. Data on participant characteristics, instruction characteristics, and instruction outcomes were extracted. A standardized measure of effect size was used to quantify reported treatment effects.
Results: The systematic search identified 2,970 potentially relevant studies, of which 24 met inclusion criteria. These studies included 66 children with CP aged 5–18 years. One of the included studies utilized a group research design, whereas the remaining used single-subject designs. Studies investigated literacy instruction methods designed to teach phonics, sight-word recognition, reading fluency, reading comprehension, spelling, or written expression skills, or multicomponent instruction (instruction methods encompassing three or more of these skills). Most instruction methods were associated with gains in reading and writing skills with medium to large effects; however, our analysis of methodological rigor suggests that these findings need to be interpreted with caution.
Conclusions: We propose that literacy instruction utilizing evidence-based principles can be effective for children with CP, provided instruction is accessible and allows children to demonstrate and receive feedback on their skills; however, further research is greatly needed. Clinical implications and priorities for future research are discussed.
Supplemental Material S1. PRISMA 2020 Checklist.
Supplemental Material S2. Data extraction form.
Murphy, A., Bailey, B., & Arciuli, J. (2023). Exploring the effects of literacy instruction for children with cerebral palsy: A systematic review. Language, Speech, and Hearing Services in Schools, 54(1), 299–321. https://doi.org/10.1044/2022_LSHSS-22-00014</p
Raw or roasted lupin supplementation of grass silage diets for beef steers
No full textLupins were roasted in a flame roaster with an exit temperature of 105 degrees C. The effect of heating on protein solubility and rumen degradability of lupin were evaluated by chemical and Dacron bag procedures. Solubility of nitrogen in buffer was reduced from 69.8% in raw lupin to 35.8% in roasted lupin. Effective degradability of crude protein (CP) and rate of CP degradation predicted by the Dacron bag procedure were lower for roasted lupin (82.3% and 9.2%/h, respectively) than for raw lupin (86.7% and 11.9%/h, respectively). Heat damage measured by acid detergent insoluble N did not differ between raw (3.31% of total N) and roasted lupin (3.46% of total N). 28 Charolais cross steers, 235+or-35 kg, were fed on grass silage only or silage plus supplements containing raw lupin (RL), roasted lupin (ROL) or soyabean meal (SBM) to supply CP at 6.5% of silage DM intake. When steers reached 330 kg liveweight they were given a finishing diet of chopped hay, barley and protein supplements at a rate of 4.5% of barley DMI. In the growing phase, steers fed on RL, ROL or SBM had higher (P http://upei-resolver.asin-risa.ca?sid=SP:CABI&id=pmid:&id=&issn=0377-8401&isbn=&volume=46&issue=1%2f2&spage=23&pages=23-35&date=1994&title=Animal%20Feed%20Science%20and%20Technology&atitle=Raw%20or%20roasted%20lupin%20supplementation%20of%20grass%20silage%20diets%20for%20beef%20steers.&aulast=Murphy&pid=%3Cauthor%3EMurphy%2c%20S%20R%3bMcNiven%2c%20M%20A%3C%2Fauthor%3E%3CAN%3E19941403086%3C%2FAN%3E%3CDT%3EJournal%20article%3C%2FDT%3
Measurement of the CP-violating phase phi(s) in (B)over-bar(s)(0) -> J / psi pi(+)pi(-) decays
No full textThe mixing-induced CP -violating phase ϕs in View the MathML source and View the MathML source decays is measured using the J/ψπ+π− final state in data, taken from 3 fb−1 of integrated luminosity, collected with the LHCb detector in 7 and 8 TeV centre-of-mass pp collisions at the LHC. A time-dependent flavour-tagged amplitude analysis, allowing for direct CP violation, yields a value for the phase ϕs=70±68±8 mrad. This result is consistent with the Standard Model expectation and previous measurements
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CP violation
No full textIn this talk the author briefly reviews the cosmological importance of CP violation and the status of calculations of baryogenisis in the context of the Standard Model. The author then turns to a discussion of Standard Model Predictions for CP violation in B decays, stressing the importance of multiple measurements to overconstrain the model parameters and thus search for indications of beyond-Standard-Model physics
Laser based Low-temperature Lithographyfree High Resolution Inkjet Printed OFET (organic field effect transistor) Fabrication on Polymer Substrate
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