arXiv subjects

Mario Pelliccioni

Publications and source records attributed to Mario Pelliccioni.

3 recordsLinked to original sources

arXiv2025

First complete characterization of an X-Ray tube through combined measurements and Geant4 simulations

X-ray tubes are sources of X-rays used in various fields, ranging from radiographic imaging in medical physics to the characterization of detectors in particle physics. This article presents a method for the complete characterization of the Mini-X2 X-Ray tube from AMETEK, an X-ray source later used to characterize gas detectors in laboratory. Using data provided by the manual, we derive key operational parameters of the tube, such as the photon emission rate and the relationship between emissive power and supplied current. Based on this characterization, we determine the air dose rate as well as the absorbed dose rate within a given volume at various distances from the source. We derive this dose experimentally, theoretically and through simulations and find good agreement between these. To enable safe operation in a laboratory environment and to support experimental comparisons, a shielding system was developed. Finally, it will be illustrated how the shielding containing the Mini-X2 has been designed, exploiting the simulation power of the Geant4 software.

physics.ins-det↗

arXiv2015

CMS High mass WW and ZZ Higgs search with the complete LHC Run1 statistics

A search for the decay of a heavy Higgs boson in the H$\to$ZZ and H$\to$WW channels is reported, analyzing several final states of the H$\to$ZZ and H$\to$WW decays. The search used proton-proton collision data corresponding to an integrated luminosity of up to 5.1 fb$^{-1}$ at $\sqrt{s} = 7$ TeV and up to 19.7 fb$^{-1}$ at $\sqrt{s} = 8$ TeV recorded with the CMS experiment at the CERN LHC. A Higgs boson with Standard Model-like coupling and decays in the mass range of 145 $< m_H <$ 1000 GeV is excluded at 95\% confidence level, based on the limit on the product of cross section and branching fraction. An interpretation of the results in the context of an electroweak singlet extension of the standard model is reported.

hep-ex↗

arXiv2011

A search for the Higgs Boson in H -> ZZ -> 4l mode

A search for a Higgs boson in the decay channel ${\rm H} \rightarrow {\rm ZZ}^{(*)}$ with each Z boson decaying to an electron or muon pair is presented using pp collisions from the LHC at $\sqrt s$ = 7 TeV. The data analyzed correspond to an integrated luminosity of $1.13 \pm 0.07$ fb$^{-1}$ recorded by the CMS detector in 2010 and 2011. The search covers Higgs boson mass ($m_{\rm H}$) hypotheses of $110 < m_{\rm H} < 600 \GeVcc$. Fifteen events are observed, while $14.4 \pm 0.6$ events are expected from standard model background processes. Upper limits at 95% CL on the cross section$\times$branching ratio for a Higgs boson with standard model-like decays exclude cross sections from about one to two times the expected standard model cross section for masses in the range $180 < m_{\rm H} < 420 \GeVcc$. Reinterpreted in the context of the standard model with four fermion families a Higgs boson with a mass in the range 138 -162 $\GeVcc$ and 178-502 $\GeVcc$ is excluded at 95% CL.

hep-ex↗