Measurement of CNGS muon neutrino speed with Borexino

We have measured the speed of muon neutrinos with the Borexino detector using short-bunch CNGS beams. The final result for the difference in time-of-flight between a =17 GeV muon neutrino and a particle moving at the speed of light in vacuum is {\delta}t = 0.8 \pm 0.7stat \pm 2.9sys ns, well consistent with zero.Comment: 6 pages, 5 figure

Measurement of the nuclear multiplicity ratio for Ks0K^0_s hadronization at CLAS

The influence of cold nuclear matter on lepto-production of hadrons in semi-inclusive deep inelastic scattering is measured using the CLAS detector in Hall B at Jefferson Lab and a 5.014 GeV electron beam. We report the $K_s^0$ multiplicity ratios for targets of C, Fe, and Pb relative to deuterium as a function of the fractional virtual photon energy $z$ transferred to the $K_s^0$ and the transverse momentum squared $p_{T}^2$ of the $K_s^0$. We find that the multiplicity ratios for $K^0_s$ are reduced in the nuclear medium at high $z$ and low $p_{T}^2$, with a trend for the $K^0_s$ transverse momentum to be broadened in the nucleus for large $p_{T}^2$.Comment: Submitted to Phys. Lett.

Precise Measurements of Beam Spin Asymmetries in Semi-Inclusive π0\pi^0 production

We present studies of single-spin asymmetries for neutral pion electroproduction in semi-inclusive deep-inelastic scattering of 5.776 GeV polarized electrons from an unpolarized hydrogen target, using the CEBAF Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility. A substantial $\sin \phi_h$ amplitude has been measured in the distribution of the cross section asymmetry as a function of the azimuthal angle $\phi_h$ of the produced neutral pion. The dependence of this amplitude on Bjorken $x$ and on the pion transverse momentum is extracted with significantly higher precision than previous data and is compared to model calculations.Comment: to be submitted PL

Absence of day-night asymmetry of 862 keV Be-7 solar neutrino rate in Borexino and MSW oscillation parameters

We report on a search for the day-night asymmetry of the Be-7 solar neutrino rate measured by Borexino at the Laboratori Nazionali del Gran Sasso (LNGS), Italy. The measured value, Adn=0.001 +- 0.012 (stat) +- 0.007 (syst), shows the absence of a significant asymmetry. This result alone rejects the so-called LOW solution at more than 8.5 sigma. Combined with the other solar neutrino data, it isolates the Large Mixing Angle (LMA) -- MSW solution at DeltaChi2 > 190 without relying on the assumption of CPT symmetry in the neutrino sector. We also show that including the day-night asymmetry, data from Borexino alone restricts the MSW neutrino oscillations to the LMA solution at 90% confidence level.Comment: 5 figures, published on Phys. Lett

Evidence for the Onset of Color Transparency in ρ0\rho^0 Electroproduction off Nuclei

We have measured the nuclear transparency of the incoherent diffractive $A(e,e'\rho^0)$ process in $^{12}$C and $^{56}$Fe targets relative to $^2$H using a 5 GeV electron beam. The nuclear transparency, the ratio of the produced $\rho^0$'s on a nucleus relative to deuterium, which is sensitive to $\rho A$ interaction, was studied as function of the coherence length ($l_c$), a lifetime of the hadronic fluctuation of the virtual photon, and the four-momentum transfer squared ($Q^2$). While the transparency for both $^{12}$C and $^{56}$Fe showed no $l_c$ dependence, a significant $Q^2$ dependence was measured, which is consistent with calculations that included the color transparency effects.Comment: 6 pages and 4 figure

Characteristics of Pediatric Patient Transferred From Hospital-Based General Emergency Departments to Acute-Care Facilities: An Analysis of the Healthcare Cost and Utilization Project Nationwide Emergency Department Sample.

STUDY OBJECTIVE: The objective of this study was to analyze the characteristics of pediatric patients transferred from a hospital-based general emergency department (ED) to an acute care facility. METHODS: Study data were abstracted from the 2010 Healthcare Cost and Utilization Project Nationwide Emergency Department Sample database. A multivariate logistic regression was constructed for pediatric patients (old) who require a transfer to an acute care facility from a general ED. Independent variables included in the model were age ( RESULTS: In the Healthcare Cost and Utilization Project/Nationwide Emergency Department Sample, 5.5 million ED visits were for children less than 18 years. About 1.5% of visits resulted in transfer. Children younger than 1 year had higher transfer rates as compared with 15 to 17 year old group (odds ratio [OR], 1.17; 95% confidence interval [CI], 1.089-1.146). Patients with Medicaid and self-pay compared with private insurance/health maintenance organization had 4% (OR, 0.96; 95% CI, 0.944-0.976) and 9% (OR, 0.91; 95% CI, 0.886-0.945), respectively, lower likelihood of being transferred. Patients with circulatory (OR, 8.43; 95% CI, 7.8-9.1), endocrine (OR, 5.9; 95% CI, 5.6-6.2), mental (OR, 5.44; 95% CI, 5.3-5.6), nervous system (OR, 5.2; 95% CI, 4.9-5.5), congenital anomalies (OR, 5.14; 95% CI, 4.5-5.9), hematology-oncology (OR, 4.49; 95% CI, 4.2-4.8), digestive, (OR, 1.52; 95% CI, 1.5-1.6), and other disorders (OR, 1.33; 95% CI, 1.3-1.4) had a higher odds of being transferred as compared with trauma/injury and poisoning, whereas patients with disorders related to genitourinary (OR, 0.96; 95% CI, 0.91-1.0), respiratory (OR, 0.79; 95% CI, 0.77-0.81), musculoskeletal (OR, 0.63; 95% CI, 0.58-0.68), skin (OR, 0.47; 95% CI, 0.45-0.50), infectious and parasitic (OR, 0.23; 95% CI, 0.22-0.25), and eyes/ears/nose/throat (OR, 0.09; 95% CI, 0.079-0.094) had a lower odds of being transferred as compared with trauma/injury and poisoning. CONCLUSIONS: Children younger than 1 year had relatively higher transfer rates. Patients covered by Medicaid and self-pay had the lowest likelihood of transfer. Transfer rates varied significantly by condition and the high-transfer diagnostic categories were related to circulatory, endocrine, nervous, hematology-oncology, and mental disorders as well as congenital anomalies, which may be related to a lack of ED or inpatient resources to care for children with problems that require more complex care

Physiological and agonistic behavioural response of Procambarus clarkii to an acoustic stimulus

This study examined the effects of an acoustic stimulus on the haemolymph and agonistic behaviour of the red swamp crayfish, Procambarus clarkii. The experiment was conducted in a tank equipped with a video recording system using six groups (three control and three test groups) of five adult crayfish (30 specimens in total). After 1h of habituation, the behaviour of the crayfish was monitored for 2h. During the second hour, the animals in the test groups were exposed to a linear sweep (frequency range 0.1–25kHz; peak amplitude 148dBrmsre.1μPa at 12kHz) acoustic stimulus for 30min. Exposure to the noise produced significant variations in haemato-immunological parameters as well as a reduction in agonistic behaviour