Optimization of Italian CMS Computing Centers via MIUR funded Research Projects

In 2012, 14 Italian Institutions participating LHC Experiments (10 in CMS) have won a grant from the Italian Ministry of Research (MIUR), to optimize Analysis activities and in general the Tier2/Tier3 infrastructure. A large range of activities is actively carried on: they cover data distribution over WAN, dynamic provisioning for both scheduled and interactive processing, design and development of tools for distributed data analysis, and tests on the porting of CMS software stack to new highly performing / low power architectures

Relationship between pediatric hospital admissions for respiratory diseases and air pollution (PM10 and TSP) in Milan during the first semester 2007 and first semester 2008

The trend was analysed of hospital admissions to the Department of Pediatrics, San Paolo Hospital, Milan, Italy, with respect to respiratory diseases and daily levels of TSP (Total Suspended Particulate) and PM 10 (Particulate Matter < 10 \u3bcm), and a comparison was made between the first semester of 2007 and 2008. Since January 1, 2008, a municipal order was introduced (ECOPASS pollution charge), reducing vehicular traffic towards the city center. Respiratory disorders included the following: asthma or asthma like disorders; upper respiratory illness (pharyngitis, rhinitis, otitis), lower respiratory illness (bronchitits, bronchiolitis and pneumonia). The following results were obtained: there were 241 days (64,8%) with at least one hospital admission vs 122 (35,2%) with no hospital admission. Daily concentration of TSP significandy differed (p=0,03) between days with or without admission, whereas the difference between PM10 concentrations was not significant. The trend of hospital admissions was significantly different in days with both TSP and PM10 concentrations exceeding 60 \u3bcg/m3 (p < 0,05). In total, there were 226 admissions during the 1st semester 2007 vs 214 in the 1st semester 2008. The mean duration of hospitalization was also reduced (5,1 vs 4,5 days) (p = 0,009). The daily mean concentration of TSP was 48 \ub1 17,8 during 2007 vs 35,6 \ub1 17,5 during 2008 (p < 0,01). Present data support the hypothesis, that exposure to air pollutants causes detrimental effects on children respiratory health. The observed improval could be due to meteorological reasons, but also to the introduction of ECOPASS, which determined a reduction of vehicular traffic. Present data, even if preliminary, seem to suggest that even a modest reduction of pollutant concentration can have beneficial effects on children's respiratory health

Search for the \u3b7c\u2032 (2 1S0) charmonium resonance

We report on a search by Fermilab experiment E835 for the \u3b7c\u2032 (21S0) charmonium resonance in the process p\u305 p\u20d7\u3b7c\u2032\u2192\u3b3\u3b3. No signal was observed and, based on 34 pb-1 integrated luminosity, we determine the following upper limits (90% confidence level) to the product of the branching ratios for a resonance mass in the region 3575\u20133660 MeV/c2: Br(\u3b7c\u2032\u2192p\u305 p) 7Br(\u3b7c\u2032\u2192\u3b3\u3b3)<12.0 710-8 for \u393=5 MeV; <5.9 710-8 for \u393=10 MeV; <4.8 710-8 for \u393=15 MeV. Combining the present data with those of the predecessor experiment, E760, the upper limits become 8.0 710-8, 5.0 710-8, and 4.5 710-8, respectively. In the restricted region 3589\u20133599 MeV/c2, where a candidate was reported by the Crystal Ball experiment, we obtain the following limits from the combined E760\u2013E835 experiments: Br(\u3b7c\u2032\u2192p\u305 p) 7Br(\u3b7c\u2032\u2192\u3b3\u3b3)<5.6 710-8 for \u393=5 MeV; <3.7 710-8 for \u393=8 MeV. A comparison of these with other experimental results is presented

Study of the \u3c7c0(1P03) State of Charmonium Formed in p\uafp Annihilations

n/

Experiment E835 at Fermilab

We provide a comprehensive description of experiment E835 at Fermilab, a high-precision experimental study of charmonium bound states. The c cbar states are formed in p pbar annihilations of cooled antiprotons stored in the Fermilab Antiproton Accumulator using a dense internal hydrogen gas-jet target. We describe the experimental strategies adopted for detecting the tiny c cbar resonant signals in the huge non-resonant hadronic background, and for measuring resonance parameters with high precision