A5029966386- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Computational Physics and Python Applications
- Radiation Detection and Scintillator Technologies
- Particle Accelerators and Free-Electron Lasers
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Superconducting Materials and Applications
- Medical Imaging Techniques and Applications
- Distributed and Parallel Computing Systems
- Atomic and Subatomic Physics Research
- International Science and Diplomacy
- X-ray Spectroscopy and Fluorescence Analysis
- Diverse Scientific and Economic Studies
- CCD and CMOS Imaging Sensors
- Aerodynamics and Acoustics in Jet Flows
- Gamma-ray bursts and supernovae
- Geophysics and Gravity Measurements
- Advanced Data Storage Technologies
- Electron and X-Ray Spectroscopy Techniques
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
2013-2024
University of Siena
2008-2021
Istituto Nazionale di Fisica Nucleare
2005-2017
University of Florence
2017
Polytechnic University of Bari
2015
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
2015
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
2013
Children's Defense Fund
1997-2012
Institute of Physics, Academia Sinica
2001-2012
University of California, Los Angeles
2005-2012
TOTEM has measured the differential cross-section for elastic proton-proton scattering at LHC energy of {\srud}s = 7TeV analysing data from a short run with dedicated large {\beta} * optics. A single exponential fit slope B (20:1{\pm}0:2stat {\pm}0:3syst)GeV-2 describes range four-momentum transfer squared |t| 0.02 to 0.33 GeV2. After extrapolation 0, total (24:8{\pm}0:2stat {\pm}1:2syst) mb was obtained. Applying optical theorem and using luminosity measurement CMS, (98:3{\pm}0:2stat...
At the LHC energy of , under various beam and background conditions, luminosities, Roman Pot positions, TOTEM has measured differential cross-section for proton-proton elastic scattering as a function four-momentum transfer squared t. The results different analyses are in excellent agreement demonstrating no sizeable dependence on conditions. Due to very close approach detectors center (≈5σbeam) dedicated run with β* = 90 m, |t|-values down 5·10−3 GeV2 were reached. exponential slope this...
The TOTEM collaboration has measured the proton-proton total cross section at √s=8 TeV using a luminosity-independent method. In LHC fills with dedicated beam optics, Roman pots have been inserted very close to allowing detection of ~90% nuclear elastic scattering events. Simultaneously inelastic rate by T1 and T2 telescopes. By applying optical theorem, (101.7±2.9) mb determined, well in agreement extrapolation from lower energies. This method also allows one derive sections:...
The TOTEM experiment at the LHC has performed first luminosity-independent determination of total proton-proton cross-section . This technique is based on optical theorem and requires simultaneous measurements inelastic rate – accomplished with forward charged-particle telescopes T1 T2 in range 3.1 < |η| 6.5 elastic by detecting outcoming protons Roman Pot detectors. data presented here were collected a dedicated run 2011 special beam optics (β* = 90 m) Pots approaching close enough to...
The TOTEM Experiment will measure the total pp cross-section with luminosity-independent method and study elastic diffractive scattering at LHC. To achieve optimum forward coverage for charged particles emitted by collisions in interaction point IP5, two tracking telescopes, T1 T2, be installed on each side pseudorapidity region 3.1 ⩽ |η| 6.5, Roman Pot stations placed distances of ±147 m ±220 from IP5. Being an independent experiment but technically integrated into CMS, first operate...
The TOTEM experiment has made a precise measurement of the elastic proton-proton differential cross-section at centre-of-mass energy sqrt(s) = 8 TeV based on high-statistics data sample obtained with beta* 90 optics. Both statistical and systematic uncertainties remain below 1%, except for t-independent contribution from overall normalisation. This unprecedented precision allows to exclude purely exponential in range four-momentum transfer squared 0.027 < |t| 0.2 GeV^2 significance greater...
Proton-proton elastic scattering has been measured by the TOTEM experiment at CERN Large Hadron Collider in dedicated runs with Roman Pot detectors placed as close seven times transverse beam size (σbeam) from outgoing beams. After careful study of accelerator optics and detector alignment, |t|, square four-momentum transferred process, determined an uncertainty . In this letter, first results differential cross-section are presented covering a |t|-range 0.36 to 2.5 GeV2. The range < |t|...
The TOTEM collaboration has measured the proton–proton total cross section at $$\sqrt{s}=13~\hbox {TeV}$$ with a luminosity-independent method. Using dedicated $$\beta ^{*}=90~\hbox {m}$$ beam optics, Roman Pots were inserted very close to beam. inelastic scattering rate been by T1 and T2 telescopes during same LHC fill. After applying optical theorem is $$\sigma _\mathrm{tot}=(110.6~\pm ~3.4$$ ) mb, well in agreement extrapolation from lower energies. This method also allows one derive...
Abstract The TOTEM experiment at the LHC has performed first measurement $$\sqrt{s} = 13\,\mathrm{TeV}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>13</mml:mn><mml:mspace /><mml:mi>TeV</mml:mi></mml:mrow></mml:math> of $$\rho $$ xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>ρ</mml:mi></mml:math> parameter, real to imaginary ratio nuclear elastic scattering amplitude $$t=0$$...
The TOTEM collaboration has measured the proton-proton total cross section at $\sqrt{s}=13$ TeV with a luminosity-independent method. Using dedicated $β^{*}=90$ m beam optics, Roman Pots were inserted very close to beam. inelastic scattering rate been by T1 and T2 telescopes during same LHC fill. After applying optical theorem is $σ_{\rm tot}=(110.6 \pm 3.4$) mb, well in agreement extrapolation from lower energies. This method also allows one derive elastic sections: el} = (31.0 1.7)$ mb...
The TOTEM experiment at the LHC has measured inelastic proton-proton cross-section in a β* = 90 m run with low pile-up. measurement was based on events least one charged particle T2 telescope acceptance of 5.3 < |η| 6.5 pseudorapidity. Combined data from T1 telescope, covering 3.1 4.7, for ⩽ final-state determined to be (70.5 ± 2.9) mb. This includes all central diffractive which maximally 0.25 mb is estimated escape detection telescopes. Based models mass diffraction, total deduced (73.7...
Abstract The proton–proton elastic differential cross section $${\mathrm{d}}\sigma /{\mathrm{d}}t$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>d</mml:mi><mml:mi>σ</mml:mi><mml:mo>/</mml:mo><mml:mi>d</mml:mi><mml:mi>t</mml:mi></mml:mrow></mml:math> has been measured by the TOTEM experiment at $$\sqrt{s}=2.76\hbox { TeV}$$...
The TOTEM experiment at the LHC has performed first measurement $\sqrt{s} = 13$ TeV of $ρ$ parameter, real to imaginary ratio nuclear elastic scattering amplitude $t=0$, obtaining following results: $ρ= 0.09 \pm 0.01$ and 0.10 0.01$, depending on different physics assumptions mathematical modelling. unprecedented precision measurement, combined with total cross-section measurements in an energy range larger than 10 (from 2.76 13 TeV), implied exclusion all models classified published by...
The TOTEM experiment has measured the charged-particle pseudorapidity density dNch/dη in pp collisions at for 5.3<|η|<6.4 events with least one charged particle transverse momentum above 40 MeV/c this range. This extends analogous measurement performed by other LHC experiments to previously unexplored forward η region. refers more than 99% of non-diffractive processes and single double diffractive masses ∼3.4 GeV/c2, corresponding about 95% total inelastic cross-section. been found decrease...
The first double diffractive cross-section measurement in the very forward region has been carried out by TOTEM experiment at LHC with center-of-mass energy of sqrt(s)=7 TeV. By utilizing tracking detectors T1 and T2, which extend up to |eta|=6.5, a clean sample pp events was extracted. From these events, we measured sigma_DD =(116 +- 25) mub for where both systems have 4.7 <|eta|_min < 6.5 .