Study of Z boson production in pPb collisions at √sNN=5.02 TeV

The production of Z bosons in pPb collisions at root S-NN = 5.02 TeV is studied by the CMS experiment via the electron and muon decay channels. The inclusive cross section is compared to pp collision predictions, and found to scale with the number of elementary nucleon-nucleon collisions. The differential cross sections as a function of the Z boson rapidity and transverse momentum are measured. Though they are found to be consistent within uncertainty with theoretical predictions both with and without nuclear effects, the forward-backward asymmetry suggests the presence of nuclear effects at large rapidities. These results provide new data for constraining nuclear parton distribution functions

Excellent adherence and no contamination by physiotherapists involved in a randomized controlled trial on reactivation of COPD patients: a qualitative process evaluation study

Contains fulltext : 107813.pdf (publisher's version ) (Open Access)OBJECTIVE: To assess the adherence of physiotherapists to the study protocol and the occurrence of contamination bias during the course of a randomized controlled trial with a recruitment period of 2 years and a 1-year follow-up (COPE-II study). STUDY DESIGN AND SETTING: In the COPE-II study, intervention patients received a standardized physiotherapeutic reactivation intervention (COPE-active) and control patients received usual care. The latter could include regular physiotherapy treatment. Information about the adherence of physiotherapists with the study protocol was collected by performing a single interview with both intervention and control patients. Patients were only interviewed when they were currently receiving physiotherapy. Interviews were performed during two separate time periods, 10 months apart. Nine characteristics of the COPE-active intervention were scored. Scores were converted into percentages (0%, no aspects of COPE-active; 100%, full implementation of COPE-active). RESULTS: Fifty-one patients were interviewed (first period: intervention n = 14 and control n = 10; second period: intervention n = 18 and control n = 9). Adherence with the COPE-active protocol was high (median scores: period 1, 96.8%; period 2, 92.1%), and large contrasts in scores between the intervention and control group were found (period 1: 96.8% versus 22.7%; period 2: 92.1% versus 25.0%). The scores of patients treated by seven physiotherapists who trained patients of both study groups were similar to the scores of patients treated by physiotherapists who only trained patients of one study group. CONCLUSION: The adherence of physiotherapists with the COPE-active protocol was high, remained unchanged over time, and no obvious contamination bias occurred

EVALITA Evaluation of NLP and Speech Tools for Italian - December 17th, 2020

Welcome to EVALITA 2020! EVALITA is the evaluation campaign of Natural Language Processing and Speech Tools for Italian. EVALITA is an initiative of the Italian Association for Computational Linguistics (AILC, http://www.ai-lc.it) and it is endorsed by the Italian Association for Artificial Intelligence (AIxIA, http://www.aixia.it) and the Italian Association for Speech Sciences (AISV, http://www.aisv.it)

Production of antihydrogen in relativistic collisions

The production of antihydrogen atoms H̄0 ≡ p̄e+ has been observed by the PS210 collaboration at LEAR. The method assumes an e+e- -pair creation via the two-photon mechanism in the antiproton-nucleus interaction. Neutral H̄0 atoms are identified by a unique sequence of characteristics. The typical signature of eleven produced antihydrogen atoms is reported including possibly 2±1 background signals. The observed yield agrees with theoretical predictions

Observation of antihydrogen production in flight at CERN

The observation of the production of antihydrogen atoms H̄0 = p̄e+, the simplest atomic bound state of antimatter, is presented. A method has been used by the PS210 collaboration at LEAR which assumes that the production of H̄0 is predominantly mediated by the e+e--pair creation via the two-photon mechanism in the antiproton-nucleus interaction. Neutral H̄0 atoms are indentified by a unique sequence of characteristics. In principle H̄0 is well suited for investigations of fundamental CPT violation studies under different forces, however, in our investigations we concentrate on the production of this antimatter object, since so far it had not been observed. The production of eleven antihydrogen atoms is reported including possibly 2 ± 1 background signals, the observed yield agrees with theoretical predictions

Production of antihydrogen

Results are presented for a measurement for the production of the antihydrogen atom , the simplest atomic bound state of antimatter. A method has been used by the PS210 collaboration at LEAR which assumes that the production of is predominantly mediated by the e+e−-pair creation via the two-photon mechanism in the antiproton-nucleus interaction. Neutral atoms are identified by a unique sequence of characteristics. In principle is well suited for investigations of fundamental CPT violation studies under different forces, however, in our investigations we concentrate on the production of this antimatter object, since so far it has never been observed before. The production of 11 antihydrogen atoms is reported including possibly 2±1 background signals, the observed yield agrees with theoretical predictions

The Muon and KL Detector for the BaBar Experiment: Physics Requirements, Final Design and Start of Construction

none36siF. Anulli;A. Asrnone;R. Baldini Ferroli;R.M. Bionta;A. Buzzo;A. Calcaterra;G.P. Carlino;N. Cavallo;R. Contri;G. Crosetti;R. de Sangro;F. Fabozzi;D. Falciai;T. Franchi;J.R. Johnson;L. Lista; Lo Vetere, M.;M. Macrì;S. Mele;R. Monge;A. Palano;M. Pallavicini;P. Paolucci;P. Parascandolo;C. Patrignani;I. Peruzzi;M.G. Pia;D. Piccolo;M. Piccolo;E. Robutti;A. Santroni;C. Sciacca;K. van Bibber;T.J. Wenaus;D.M. Wright;A. ZalloF., Anulli; A., Asrnone; R., Baldini Ferroli; R. M., Bionta; A., Buzzo; A., Calcaterra; G. P., Carlino; N., Cavallo; R., Contri; G., Crosetti; R., de Sangro; F., Fabozzi; D., Falciai; T., Franchi; J. R., Johnson; L., Lista; LO VETERE, Maurizio; M., Macrì; S., Mele; Monge, MARIA ROBERTA; A., Palano; Pallavicini, Marco; P., Paolucci; P., Parascandolo; Patrignani, Claudia; I., Peruzzi; M. G., Pia; D., Piccolo; M., Piccolo; E., Robutti; Santroni, Alberto; C., Sciacca; K., van Bibber; T. J., Wenaus; D. M., Wright; A., Zall

The muon and K-L detector for the BaBar experiment: Physics requirements, final design and start of construction

Resistive Plate Chambers have been chosen as active elements for the mu and K-L detector in the BaBar experiment. This subsystem, now under construction, represents the most extensive use to date of the RPC technology. The design considerations are presented, together with preliminary results on the operating characteristics