G. Introzzi - Academia.edu (original) (raw)

Papers by G. Introzzi

Research paper thumbnail of Performance of double gap resistive plate counters with high gain non-flammable gases

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1995

ABSTRACT

Research paper thumbnail of The super fixed target beauty facility at the SSC

Research paper thumbnail of Production of , ψ′ and γ in 800 GeV/c proton-silicon interactions

Physics Letters B, 1996

We report on the analysis of Charmonium and Bottomium states produced in p-Si interactions at fi ... more We report on the analysis of Charmonium and Bottomium states produced in p-Si interactions at fi = 38.7 GeV. The data have been collected with the open geometry spectrometer of the E771 Experiment at the FNAL High Intensity Lab. J/S, I′andYtotalcrosssectionsaswellastheratioB(@′−−−fpp)c(I' and Y total cross sections as well as the ratio B(@' ---f pp)c(I′andYtotalcrosssectionsaswellastheratioB(@′−−−fpp)c(')/(B(J/y? --+ ,up)a(J/@)) have been measured. Results are compared with theoretical predictions and with results at other energies. PACS: 13.85.Ni; 13.6O.Le

Research paper thumbnail of FNAL E771 RPC muon trigger

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1995

... 1. Introduction 2. The trigger strategy Fermilab E771 is a fixed target beauty hadroproductio... more ... 1. Introduction 2. The trigger strategy Fermilab E771 is a fixed target beauty hadroproduction experiment, the primary objectives of which are the measurement of beauty total cross section, lifetimes and BB mixing by triggering on the muons generated in the final state decays BJ ...

Research paper thumbnail of Measurement of the fraction of t(t)over-bar production via gluon-gluon fusion in p(p)over-bar collisions at root s=1.96 Tev

Research paper thumbnail of Measurement of the fraction of t(t)over-bar production via gluon-gluon fusion in p(p)over-bar collisions at root s=1.96 Tev

Research paper thumbnail of Measurement of t(t)over-cap spin correlation in p(p)over-cap collisions using the CDF II detector at the Tevatron

Physical Review D, 2011

Citation Aaltonen, T. et al. "Measurement of tt[over ¯] spin correlation in pp[over ¯] collisions... more Citation Aaltonen, T. et al. "Measurement of tt[over ¯] spin correlation in pp[over ¯] collisions using the CDF II detector at the Tevatron." Physical Review D 83.3 (2011) : n. pag.

Research paper thumbnail of Measurement of t(t)over-cap spin correlation in p(p)over-cap collisions using the CDF II detector at the Tevatron

Physical Review D, 2011

Citation Aaltonen, T. et al. "Measurement of tt[over ¯] spin correlation in pp[over ¯] collisions... more Citation Aaltonen, T. et al. "Measurement of tt[over ¯] spin correlation in pp[over ¯] collisions using the CDF II detector at the Tevatron." Physical Review D 83.3 (2011) : n. pag.

Research paper thumbnail of Measurement of event shapes in p(p)over-bar collisions at root s=1.96 TeV

Physical Review D, 2011

Citation T. Aaltonen et al. (CDF Collaboration). "Measurement of event shapes in pp[over-bar] col... more Citation T. Aaltonen et al. (CDF Collaboration). "Measurement of event shapes in pp[over-bar] collisions at [sqrt]s=1.96TeV." Phys. Rev. D 83, 112007 (2011) [13 pages].

Research paper thumbnail of Measurement of event shapes in p(p)over-bar collisions at root s=1.96 TeV

Physical Review D, 2011

A study of event-shape observables in proton-antiproton collisions at root s= 1.96 TeV is present... more A study of event-shape observables in proton-antiproton collisions at root s= 1.96 TeV is presented. The data for this analysis were recorded by the CDF II Detector at the Tevatron Collider. The variables studied are the transverse thrust and thrust minor, both defined in the plane perpendicular to the beam direction. The observables are measured using energies from unclustered calorimeter cells. In addition to studies of the differential distributions, we present the dependence of event-shape mean values on the leading-jet transverse ...

Research paper thumbnail of Search for the Standard Model Higgs Boson Decaying to a b(b)over-bar Pair in Events with Two Oppositely Charged Leptons Using the Full CDF Data Set

Physical Review Letters, 2012

Research paper thumbnail of Search for the Standard Model Higgs Boson Decaying to a b(b)over-bar Pair in Events with Two Oppositely Charged Leptons Using the Full CDF Data Set

Physical Review Letters, 2012

Research paper thumbnail of Search for a heavy vector boson decaying to two gluons in p(p)over-bar collisions at root s=1.96 TeV

Physical Review D, 2012

We present a search for a new heavy vector boson Z that decays to gluons. Decays to on-shell gluo... more We present a search for a new heavy vector boson Z that decays to gluons. Decays to on-shell gluons are suppressed, leading to a dominant decay mode of Z → g * g. We study the case where the off-shell gluon g * converts to a pair of top quarks, leading to a final state of ttg. In a sample of events with exactly one charged lepton, large missing transverse momentum and at least five jets, corresponding to an integrated luminosity of 8.7 fb −1 collected by the CDF II detector, we find the data to be consistent with the standard model. We set upper limits on the production cross section times branching ratio of this chromophilic Z at 95% confidence level from 300 fb to 40 fb for Z masses ranging from 400 GeV/c 2 to 1000 GeV/c 2 , respectively.

Research paper thumbnail of Search for a heavy vector boson decaying to two gluons in p(p)over-bar collisions at root s=1.96 TeV

Physical Review D, 2012

We present a search for a new heavy vector boson Z that decays to gluons. Decays to on-shell gluo... more We present a search for a new heavy vector boson Z that decays to gluons. Decays to on-shell gluons are suppressed, leading to a dominant decay mode of Z → g * g. We study the case where the off-shell gluon g * converts to a pair of top quarks, leading to a final state of ttg. In a sample of events with exactly one charged lepton, large missing transverse momentum and at least five jets, corresponding to an integrated luminosity of 8.7 fb −1 collected by the CDF II detector, we find the data to be consistent with the standard model. We set upper limits on the production cross section times branching ratio of this chromophilic Z at 95% confidence level from 300 fb to 40 fb for Z masses ranging from 400 GeV/c 2 to 1000 GeV/c 2 , respectively.

Research paper thumbnail of Measurement of CP-violating asymmetries in D-0 -> pi(+) pi(-) and D-0 -> K+ K- decays at CDF

Physical Review D, 2012

... 52 JR Smith,7 FD Snider,15 A. Soha,15 V. Sorin,4 H. Song,43 P. Squillaciotihh,42 M.Stancari,1... more ... 52 JR Smith,7 FD Snider,15 A. Soha,15 V. Sorin,4 H. Song,43 P. Squillaciotihh,42 M.Stancari,15 R. St ... Institute of Technology, Cambridge, Massachusetts 02139, USA 31Institute of Particle Physics: McGill University, Montréal, Québec, Canada H3A 2T8; Simon Fraser University ...

Research paper thumbnail of Measurement of CP-violating asymmetries in D-0 -> pi(+) pi(-) and D-0 -> K+ K- decays at CDF

Physical Review D, 2012

... 52 JR Smith,7 FD Snider,15 A. Soha,15 V. Sorin,4 H. Song,43 P. Squillaciotihh,42 M.Stancari,1... more ... 52 JR Smith,7 FD Snider,15 A. Soha,15 V. Sorin,4 H. Song,43 P. Squillaciotihh,42 M.Stancari,15 R. St ... Institute of Technology, Cambridge, Massachusetts 02139, USA 31Institute of Particle Physics: McGill University, Montréal, Québec, Canada H3A 2T8; Simon Fraser University ...

Research paper thumbnail of Measurement of the B-c(-) meson lifetime in the decay B-c(-) -> J/psi pi(-)

Physical Review D, 2013

ABSTRACT The lifetime of the Bc- meson is measured using 272 exclusive Bc-→J/ψ(→μμ)π decays recon... more ABSTRACT The lifetime of the Bc- meson is measured using 272 exclusive Bc-→J/ψ(→μμ)π decays reconstructed in data from proton-antiproton collisions corresponding to an integrated luminosity of 6.7 fb1 recorded by the CDF II detector at the Fermilab Tevatron. The lifetime of the Bc- meson is measured to be τ(Bc-)=0.452±0.048(stat)±0.027(syst) ps. This is the first measurement of the Bc- meson lifetime in a fully reconstructed hadronic channel, and it agrees with previous results and has comparable precision. © 2013 American Physical Society.

Research paper thumbnail of Measurement of the inclusive leptonic asymmetry in top-quark pairs that decay to two charged leptons at CDF

Physical review letters, Jan 25, 2014

We measure the inclusive forward-backward asymmetry of the charged-lepton pseudorapidities from t... more We measure the inclusive forward-backward asymmetry of the charged-lepton pseudorapidities from top-quark pairs produced in proton-antiproton collisions and decaying to final states that contain two charged leptons (electrons or muons). The data are collected with the Collider Detector at Fermilab and correspond to an integrated luminosity of 9.1 fb(-1). We measure the leptonic forward-backward asymmetry, A(FB)(ℓ), to be 0.072 ± 0.060 and the leptonic pair forward-backward asymmetry, A(FB)(ℓℓ), to be 0.076 ± 0.082. The measured values can be compared with the standard model predictions of A(FB)(ℓ) = 0.038 ± 0.003 and A(FB)(ℓℓ) = 0.048 ± 0.004, respectively. Additionally, we combine the A(FB)(ℓ) result with a previous determination from a final state with a single lepton and hadronic jets and obtain A(FB)(ℓ) = 0.090(-0.026)(+0.028).

Research paper thumbnail of Measurement of the inclusive leptonic asymmetry in top-quark pairs that decay to two charged leptons at CDF

Physical review letters, Jan 25, 2014

We measure the inclusive forward-backward asymmetry of the charged-lepton pseudorapidities from t... more We measure the inclusive forward-backward asymmetry of the charged-lepton pseudorapidities from top-quark pairs produced in proton-antiproton collisions and decaying to final states that contain two charged leptons (electrons or muons). The data are collected with the Collider Detector at Fermilab and correspond to an integrated luminosity of 9.1 fb(-1). We measure the leptonic forward-backward asymmetry, A(FB)(ℓ), to be 0.072 ± 0.060 and the leptonic pair forward-backward asymmetry, A(FB)(ℓℓ), to be 0.076 ± 0.082. The measured values can be compared with the standard model predictions of A(FB)(ℓ) = 0.038 ± 0.003 and A(FB)(ℓℓ) = 0.048 ± 0.004, respectively. Additionally, we combine the A(FB)(ℓ) result with a previous determination from a final state with a single lepton and hadronic jets and obtain A(FB)(ℓ) = 0.090(-0.026)(+0.028).

Research paper thumbnail of Search for new color-octet vector particle decaying to in collisions at

Physics Letters B, 2010

... t , M. Giunta au , G. Giurgiu z , V. Glagolev p , D. Glenzinski r , M. Gold al , N. Goldschmi... more ... t , M. Giunta au , G. Giurgiu z , V. Glagolev p , D. Glenzinski r , M. Gold al , N. Goldschmidt s , A. Golossanov r , G. Gomez l , G. Gomez-Ceballos ag , M ... au , A. Robson v , T. Rodrigo l , T. Rodriguez at , E. Rogers y , S. Rolli be , R. Roser r , M. Rossi bc , R. Rossin k , P. Roy ah , A ...

Research paper thumbnail of Performance of double gap resistive plate counters with high gain non-flammable gases

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1995

ABSTRACT

Research paper thumbnail of The super fixed target beauty facility at the SSC

Research paper thumbnail of Production of , ψ′ and γ in 800 GeV/c proton-silicon interactions

Physics Letters B, 1996

We report on the analysis of Charmonium and Bottomium states produced in p-Si interactions at fi ... more We report on the analysis of Charmonium and Bottomium states produced in p-Si interactions at fi = 38.7 GeV. The data have been collected with the open geometry spectrometer of the E771 Experiment at the FNAL High Intensity Lab. J/S, I′andYtotalcrosssectionsaswellastheratioB(@′−−−fpp)c(I' and Y total cross sections as well as the ratio B(@' ---f pp)c(I′andYtotalcrosssectionsaswellastheratioB(@′−−−fpp)c(')/(B(J/y? --+ ,up)a(J/@)) have been measured. Results are compared with theoretical predictions and with results at other energies. PACS: 13.85.Ni; 13.6O.Le

Research paper thumbnail of FNAL E771 RPC muon trigger

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1995

... 1. Introduction 2. The trigger strategy Fermilab E771 is a fixed target beauty hadroproductio... more ... 1. Introduction 2. The trigger strategy Fermilab E771 is a fixed target beauty hadroproduction experiment, the primary objectives of which are the measurement of beauty total cross section, lifetimes and BB mixing by triggering on the muons generated in the final state decays BJ ...

Research paper thumbnail of Measurement of the fraction of t(t)over-bar production via gluon-gluon fusion in p(p)over-bar collisions at root s=1.96 Tev

Research paper thumbnail of Measurement of the fraction of t(t)over-bar production via gluon-gluon fusion in p(p)over-bar collisions at root s=1.96 Tev

Research paper thumbnail of Measurement of t(t)over-cap spin correlation in p(p)over-cap collisions using the CDF II detector at the Tevatron

Physical Review D, 2011

Citation Aaltonen, T. et al. "Measurement of tt[over ¯] spin correlation in pp[over ¯] collisions... more Citation Aaltonen, T. et al. "Measurement of tt[over ¯] spin correlation in pp[over ¯] collisions using the CDF II detector at the Tevatron." Physical Review D 83.3 (2011) : n. pag.

Research paper thumbnail of Measurement of t(t)over-cap spin correlation in p(p)over-cap collisions using the CDF II detector at the Tevatron

Physical Review D, 2011

Citation Aaltonen, T. et al. "Measurement of tt[over ¯] spin correlation in pp[over ¯] collisions... more Citation Aaltonen, T. et al. "Measurement of tt[over ¯] spin correlation in pp[over ¯] collisions using the CDF II detector at the Tevatron." Physical Review D 83.3 (2011) : n. pag.

Research paper thumbnail of Measurement of event shapes in p(p)over-bar collisions at root s=1.96 TeV

Physical Review D, 2011

Citation T. Aaltonen et al. (CDF Collaboration). "Measurement of event shapes in pp[over-bar] col... more Citation T. Aaltonen et al. (CDF Collaboration). "Measurement of event shapes in pp[over-bar] collisions at [sqrt]s=1.96TeV." Phys. Rev. D 83, 112007 (2011) [13 pages].

Research paper thumbnail of Measurement of event shapes in p(p)over-bar collisions at root s=1.96 TeV

Physical Review D, 2011

A study of event-shape observables in proton-antiproton collisions at root s= 1.96 TeV is present... more A study of event-shape observables in proton-antiproton collisions at root s= 1.96 TeV is presented. The data for this analysis were recorded by the CDF II Detector at the Tevatron Collider. The variables studied are the transverse thrust and thrust minor, both defined in the plane perpendicular to the beam direction. The observables are measured using energies from unclustered calorimeter cells. In addition to studies of the differential distributions, we present the dependence of event-shape mean values on the leading-jet transverse ...

Research paper thumbnail of Search for the Standard Model Higgs Boson Decaying to a b(b)over-bar Pair in Events with Two Oppositely Charged Leptons Using the Full CDF Data Set

Physical Review Letters, 2012

Research paper thumbnail of Search for the Standard Model Higgs Boson Decaying to a b(b)over-bar Pair in Events with Two Oppositely Charged Leptons Using the Full CDF Data Set

Physical Review Letters, 2012

Research paper thumbnail of Search for a heavy vector boson decaying to two gluons in p(p)over-bar collisions at root s=1.96 TeV

Physical Review D, 2012

We present a search for a new heavy vector boson Z that decays to gluons. Decays to on-shell gluo... more We present a search for a new heavy vector boson Z that decays to gluons. Decays to on-shell gluons are suppressed, leading to a dominant decay mode of Z → g * g. We study the case where the off-shell gluon g * converts to a pair of top quarks, leading to a final state of ttg. In a sample of events with exactly one charged lepton, large missing transverse momentum and at least five jets, corresponding to an integrated luminosity of 8.7 fb −1 collected by the CDF II detector, we find the data to be consistent with the standard model. We set upper limits on the production cross section times branching ratio of this chromophilic Z at 95% confidence level from 300 fb to 40 fb for Z masses ranging from 400 GeV/c 2 to 1000 GeV/c 2 , respectively.

Research paper thumbnail of Search for a heavy vector boson decaying to two gluons in p(p)over-bar collisions at root s=1.96 TeV

Physical Review D, 2012

We present a search for a new heavy vector boson Z that decays to gluons. Decays to on-shell gluo... more We present a search for a new heavy vector boson Z that decays to gluons. Decays to on-shell gluons are suppressed, leading to a dominant decay mode of Z → g * g. We study the case where the off-shell gluon g * converts to a pair of top quarks, leading to a final state of ttg. In a sample of events with exactly one charged lepton, large missing transverse momentum and at least five jets, corresponding to an integrated luminosity of 8.7 fb −1 collected by the CDF II detector, we find the data to be consistent with the standard model. We set upper limits on the production cross section times branching ratio of this chromophilic Z at 95% confidence level from 300 fb to 40 fb for Z masses ranging from 400 GeV/c 2 to 1000 GeV/c 2 , respectively.

Research paper thumbnail of Measurement of CP-violating asymmetries in D-0 -> pi(+) pi(-) and D-0 -> K+ K- decays at CDF

Physical Review D, 2012

... 52 JR Smith,7 FD Snider,15 A. Soha,15 V. Sorin,4 H. Song,43 P. Squillaciotihh,42 M.Stancari,1... more ... 52 JR Smith,7 FD Snider,15 A. Soha,15 V. Sorin,4 H. Song,43 P. Squillaciotihh,42 M.Stancari,15 R. St ... Institute of Technology, Cambridge, Massachusetts 02139, USA 31Institute of Particle Physics: McGill University, Montréal, Québec, Canada H3A 2T8; Simon Fraser University ...

Research paper thumbnail of Measurement of CP-violating asymmetries in D-0 -> pi(+) pi(-) and D-0 -> K+ K- decays at CDF

Physical Review D, 2012

... 52 JR Smith,7 FD Snider,15 A. Soha,15 V. Sorin,4 H. Song,43 P. Squillaciotihh,42 M.Stancari,1... more ... 52 JR Smith,7 FD Snider,15 A. Soha,15 V. Sorin,4 H. Song,43 P. Squillaciotihh,42 M.Stancari,15 R. St ... Institute of Technology, Cambridge, Massachusetts 02139, USA 31Institute of Particle Physics: McGill University, Montréal, Québec, Canada H3A 2T8; Simon Fraser University ...

Research paper thumbnail of Measurement of the B-c(-) meson lifetime in the decay B-c(-) -> J/psi pi(-)

Physical Review D, 2013

ABSTRACT The lifetime of the Bc- meson is measured using 272 exclusive Bc-→J/ψ(→μμ)π decays recon... more ABSTRACT The lifetime of the Bc- meson is measured using 272 exclusive Bc-→J/ψ(→μμ)π decays reconstructed in data from proton-antiproton collisions corresponding to an integrated luminosity of 6.7 fb1 recorded by the CDF II detector at the Fermilab Tevatron. The lifetime of the Bc- meson is measured to be τ(Bc-)=0.452±0.048(stat)±0.027(syst) ps. This is the first measurement of the Bc- meson lifetime in a fully reconstructed hadronic channel, and it agrees with previous results and has comparable precision. © 2013 American Physical Society.

Research paper thumbnail of Measurement of the inclusive leptonic asymmetry in top-quark pairs that decay to two charged leptons at CDF

Physical review letters, Jan 25, 2014

We measure the inclusive forward-backward asymmetry of the charged-lepton pseudorapidities from t... more We measure the inclusive forward-backward asymmetry of the charged-lepton pseudorapidities from top-quark pairs produced in proton-antiproton collisions and decaying to final states that contain two charged leptons (electrons or muons). The data are collected with the Collider Detector at Fermilab and correspond to an integrated luminosity of 9.1 fb(-1). We measure the leptonic forward-backward asymmetry, A(FB)(ℓ), to be 0.072 ± 0.060 and the leptonic pair forward-backward asymmetry, A(FB)(ℓℓ), to be 0.076 ± 0.082. The measured values can be compared with the standard model predictions of A(FB)(ℓ) = 0.038 ± 0.003 and A(FB)(ℓℓ) = 0.048 ± 0.004, respectively. Additionally, we combine the A(FB)(ℓ) result with a previous determination from a final state with a single lepton and hadronic jets and obtain A(FB)(ℓ) = 0.090(-0.026)(+0.028).

Research paper thumbnail of Measurement of the inclusive leptonic asymmetry in top-quark pairs that decay to two charged leptons at CDF

Physical review letters, Jan 25, 2014

We measure the inclusive forward-backward asymmetry of the charged-lepton pseudorapidities from t... more We measure the inclusive forward-backward asymmetry of the charged-lepton pseudorapidities from top-quark pairs produced in proton-antiproton collisions and decaying to final states that contain two charged leptons (electrons or muons). The data are collected with the Collider Detector at Fermilab and correspond to an integrated luminosity of 9.1 fb(-1). We measure the leptonic forward-backward asymmetry, A(FB)(ℓ), to be 0.072 ± 0.060 and the leptonic pair forward-backward asymmetry, A(FB)(ℓℓ), to be 0.076 ± 0.082. The measured values can be compared with the standard model predictions of A(FB)(ℓ) = 0.038 ± 0.003 and A(FB)(ℓℓ) = 0.048 ± 0.004, respectively. Additionally, we combine the A(FB)(ℓ) result with a previous determination from a final state with a single lepton and hadronic jets and obtain A(FB)(ℓ) = 0.090(-0.026)(+0.028).

Research paper thumbnail of Search for new color-octet vector particle decaying to in collisions at

Physics Letters B, 2010

... t , M. Giunta au , G. Giurgiu z , V. Glagolev p , D. Glenzinski r , M. Gold al , N. Goldschmi... more ... t , M. Giunta au , G. Giurgiu z , V. Glagolev p , D. Glenzinski r , M. Gold al , N. Goldschmidt s , A. Golossanov r , G. Gomez l , G. Gomez-Ceballos ag , M ... au , A. Robson v , T. Rodrigo l , T. Rodriguez at , E. Rogers y , S. Rolli be , R. Roser r , M. Rossi bc , R. Rossin k , P. Roy ah , A ...