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Featured researches published by F. Cindolo.


Physics Letters B | 1992

A measurement of σtot (γp) at √s=210 GeV

M. Derrick; D. Krakauer; S. Magill; B. Musgrave; J. Repond; K. Sugano; R. W. Stanek; R. L. Talaga; J. L. Thron; F. Arzarello; R. Ayed; G. Barbagli; G. Bari; M. Basile; L. Bellagamba; D. Boscherini; G. Bruni; P. Bruni; Gc Romeo; G. Castellini; M. Chiarini; L. Cifarelli; F. Cindolo; F. Ciralli; A. Contin; S. D'Auria; C. Del Papa; F. Frasconi; P. Giusti; G. Iacobucci

Abstract The total photoproduction cross section is determined from a measurement of electroproduction with the ZEUS detector at HERA. The Q 2 values of the virtual photons are in the range 10 −7 Q 2 −2 GeV 2 . The γp total cross section in the γp centre of mass energy range 186–233 GeV is 154 ± 16 (stat.) ± 32 (syst.) μ b.


Physics Letters B | 2004

Muon-pair and tau-pair production in two-photon collisions at LEP

P. Achard; O. Adriani; M. Aguilar-Benitez; J. Alcaraz; G. Alemanni; J. Allaby; A. Aloisio; M. G. Alviggi; H. Anderhub; V. Andreev; F. Anselmo; A. Arefiev; T. Azemoon; T. Aziz; P. Bagnaia; A. Bajo; G. Baksay; L. Baksay; S.V. Baldew; S. Banerjee; Sw. Banerjee; A. Barczyk; R. Barillère; P. Bartalini; M. Basile; N. Batalova; R. Battiston; A. Bay; F. Becattini; U. Becker

The QED processes e^+ e^- ->e^+ e^- \mu^+ \mu^- and e^+ e^- ->e^+ e^- \tau^+ \tau^- are studied with the L3 detector at LEP using an untagged data sample collected at centre-of-mass energies 161 GeV<sqrt{s}<209 GeV. The tau-pairs are observed through the associated decay of one tau into e\nu\nu and the other into \pi\pi\nu . The cross sections are measured as a function of sqrt{s}. For muon pairs, the cross section of the \gamma\gamma ->\mu^+\mu^- process is also measured as a function of the two-photon centre-of-mass energy for 3 GeV<W_{\gamma\gamma}<40 GeV. Good agreement is found between these measurements and the O(\alpha^4) QED expectations. In addition, limits on the anomalous magnetic and electric dipole moments of the tau lepton are extracted.


Physics Letters B | 2004

Measurement of the Z-boson mass using e+e- →Zγ events at centre-of-mass energies above the Z pole

P. Achard; O. Adriani; M. Aguilar-Benitez; J. Alcaraz; G. Alemanni; J. Allaby; A. Aloisio; M. G. Alviggi; H. Anderhub; V. Andreev; F. Anselmo; A. Arefiev; T. Azemoon; T. Aziz; P. Bagnaia; A. Bajo; G. Baksay; L. Baksay; S.V. Baldew; S. Banerjee; Sw. Banerjee; A. Barczyk; R. Barillère; P. Bartalini; M. Basile; N. Batalova; R. Battiston; A. Bay; F. Becattini; U. Becker

Events from the e + e − → Zγ process with hard initial-state radiation collected with the L3 detector at centre-of-mass energies between 183 GeV and 209 GeV are used to measure the mass of the Z boson. Decays of the Z boson into hadrons or muon pairs are considered and the Z mass is determined to be 91.272±0.032 (stat.)± 0.033 (syst.) GeV, in agreement with the value measured at the Z resonance. Alternatively , assuming this measured value of the Z mass, the method determines the LEP centre-of-mass energy, found to be 175 ± 68 (stat.) ± 68 (syst.) MeV lower than the nominal value.


Physics Letters B | 2004

Search for colour singlet and colour reconnection effects in hadronic Z decays at LEP

P. Achard; O. Adriani; M. Aguilar-Benitez; J. Alcaraz; G. Alemanni; J. Allaby; A. Aloisio; M. G. Alviggi; H. Anderhub; V. Andreev; F. Anselmo; A. Arefiev; T. Azemoon; T. Aziz; P. Bagnaia; A. Bajo; G. Baksay; L. Baksay; S.V. Baldew; S. Banerjee; Sw. Banerjee; A. Barczyk; R. Barillère; P. Bartalini; M. Basile; N. Batalova; R. Battiston; A. Bay; F. Becattini; U. Becker

A search is performed in symmetric 3-jet hadronic Z-decay events for evidence of colour singlet production or colour reconnection effects. Asymmetries in the angular separation of particles are found to be sensitive indicators of such effects. Upper limits on the level of colour singlet production or of colour reconnection effects are established for a variety of models.  2003 Published by Elsevier B.V. Open access under CC BY license. 22 L3 Collaboration / Physics Letters B 581 (2004) 19–30


nuclear science symposium and medical imaging conference | 1991

GaAs solid state detectors for physics at the LHC

S.P. Beaumont; R. Bertin; C.N. Booth; C. M. Buttar; L. Carraresi; F. Cindolo; M. Colocci; F. Combley; S. D'Auria; C. delPapa; M. Dogru; M. Edwards; F. Fiori; F. Foster; A. Francescato; R. Gray; G. Hill; Y. Hou; P.A. Houston; B.K. Jones; J.G. Lynch; B. Lisowski; J. Matheson; F. Nava; M. Nuti; V. O'Shea; P. Ottaviani; P.G. Pelfer; C. Raine; J. Santana

The authors report on progress with Schottky diode and p-i-n diode GaAs detectors for minimum ionizing particles. The radiation hardness and potential speed of simple diodes are shown to be more than competitive with silicon detectors. A discussion is given of the present understanding of the charge transport mechanism in the detectors as it influences their charge collection efficiency. Early results from microstrip detectors which are relevant for high radiation regions of Large Hadron Collider (LHC) detectors near the beam pipe and in the forward region are also described. The authors have established the ability of GaAs Schottky diode detectors to tolerate radiation loads at the level expected in more than one year of running at a radial distance of only a few cm from the intersection point of the proposed LHC collider at nominal luminosity. The diode output signal of only a few nanoseconds is very satisfactory for the new colliders.<<ETX>>


Physics Letters B | 2004

Inclusive Lambda production in two-photon collisions at LEP

P. Achard; O. Adriani; M. Aguilar-Benitez; J. Alcaraz; G. Alemanni; J. Allaby; A. Aloisio; M. G. Alviggi; H. Anderhub; V. Andreev; F. Anselmo; A. Arefiev; T. Azemoon; T. Aziz; P. Bagnaia; A. Bajo; G. Baksay; L. Baksay; S.V. Baldew; S. Banerjee; Sw. Banerjee; A. Barczyk; R. Barillère; P. Bartalini; M. Basile; N. Batalova; R. Battiston; A. Bay; F. Becattini; U. Becker

The reactions e^+e^- ->e^+e^- Lambda X and e^+e^- ->e^+e^- Lambda X are studied using data collected at LEP with the L3 detector at centre-of-mass energies between 189 and 209 GeV. Inclusive differential cross sections are measured as a function of the lambda transverse momentum, p_t, and pseudo-rapidity, eta, in the ranges 0.4 GeV<p_t<2.5 GeV and |\eta|<1.2. The data are compared to Monte Carlo predictions. The differential cross section as a function of p_t is well described by an exponential of the form A exp (- p_t /<p_t>)


Nuovo Cimento Della Societa Italiana Di Fisica A-nuclei Particles and Fields | 1993

Acoplanar Di-leptons and Mixed events on the basis of two supergravity model predictions

F. Anselmo; G. Anzivino; F. Arzarello; G. Bari; M. Basile; T. Barillari; G. Bellagamba; J. Berbiers; R. Bertin; F. Block; D. Boscherini; G. Bruni; P. Bruni; G. Cara Romeo; M. Chiarini; Luisa Cifarelli; F. Cindolo; F. Ciralli; A. Contin; I. Crotty; C. D'Ambrosio; M. Dardo; S. De Pasquale; R. De Salvo; L. Fava; F. Frasconi; P. Ford; P. Giusti; T. Gys; D. Hatzifotiadou

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M. Basile

University of Bologna

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A. Bay

University of Lausanne

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G. Alemanni

University of Lausanne

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