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CERN Document Server Encontrados 2,040 registros  1 - 10siguientefinal  ir al registro: La búsqueda tardó 1.32 segundos. 
1.
(100)
Leading Particle Production in Light Flavour Jets / OPAL Collaboration
The energy distribution and type of the particle with the highest momentum in quark jets are determined for each of the five quark flavours making only minimal model assumptions. The analysis is based on a large statistics sample of hadronic Z0 decays collected with the OPAL detector at the LEP e+e- collider. [...]
hep-ex/0001054; CERN-EP-99-164; CERN-EP-99-164.- Geneva : CERN, 2000 - 34 p. - Published in : Eur. Phys. J. C 16 (2000) 407-421 Fulltext: arXiv:hep-ex_0001054 - PDF; 0001054 - PDF; External link: hep-ex/0001054 PDF - Please contact the library if you need to access this document.
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2.
(91)
Charged Multiplicities in Z Decays into u, d, and s Quarks / OPAL Collaboration
About 4.4 million hadronic decays of Z bosons, recorded by the OPAL detector at LEP at a centre-of-mass energy of around sqrt(s) = 91.2 GeV, are used to determine the mean charged particle multiplicities for the three light quark flavours. Events from primary u, d, and s quarks are tagged by selecting characteristic particles which carry a large fraction of the beam energy. [...]
hep-ex/0011022; CERN-EP-2000-128; CERN-EP-2000-128.- Geneva : CERN, 2001 - 24 p. - Published in : Eur. Phys. J. C 19 (2001) 257-268 Fulltext: arXiv:hep-ex_0011022 - PDF; 0011022 - PDF; External links: Fulltext; Rivet analyses reference - Please contact the library if you need to access this document.
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3.
(83)
Measurement of Bose-Einstein Correlations in $e^{+}e^{-}\to W^{+}W^{-}$ Events at LEP / L3 Collaboration
Bose-Einstein correlations in W-pair production at LEP are investigated in a data sample of 629 pb$^{-1}$ collected by the L3 detector at $\sqrt{s}=$ 189--209\,GeV. Bose-Einstein correlations between pions within a W decay are observed and found to be in good agreement with those in light-quark Z decay. [...]
hep-ex/0209016; CERN-EP-2002-062; CERN-EP-2002-062; CERN-L3-257.- Geneva : CERN, 2002 - 16 p. - Published in : Phys. Lett. B 547 (2002) 139-150 Fulltext: arXiv:hep-ex_0209016 - PDF; ep-2002-062 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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4.
(82)
Identified Charged Particles in Quark and Gluon Jets / DELPHI Collaboration
A sample of 2.2 million hadronic \z decays, selected fythe {\sc Delphi} detector at {\sc Lep} during 1994-199nimprovedmeasurement of inclusive distributions of \pie, \kp anrantiparticles in gluon and quark jets. The production l identified particles were found to be softer in gluon kjets, with a higher multiplicity in gluon jets as obseecharged particles. [...]
hep-ex/0106063; CERN-EP-2000-007; CERN-EP-2000-007.- Geneva : CERN, 2000 - 26 p. - Published in : Eur. Phys. J. C 17 (2000) 207-222 Fulltext: ep-2000-007_version1 - PDF; ep-2000-007_version3 - PDF; ep-2000-007_version2 - PDF; arXiv:hep-ex_0106063 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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5.
(82)
Two Higgs Doublet Model and Model Independent Interpretation of Neutral Higgs Boson Searches / OPAL Collaboration
Searches for the neutral Higgs bosons h0 and A0, are used to obtain limits on the Type II Two Higgs Doublet Model (2HDM(II)) with no CP-violation in the Higgs sector and no additional particles besides the five Higgs bosons. The analysis combines approximately 170 pb-1 of data collected with the OPAL detector at sqrt{s} ~ 189 GeV with previous runs at sqrt{s} ~ mZ and sqrt{s} ~ 183 GeV. [...]
hep-ex/0007040; CERN-EP-2000-092; CERN-EP-2000-092.- Geneva : CERN, 2001 - 37 p. - Published in : Eur. Phys. J. C 18 (2001) 425-445 Fulltext: 0007040 - PDF; arXiv:hep-ex_0007040 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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6.
(80)
Measurement of the branching fractions and forward-backward asymmetries of the $Z^0$ into light quarks / OPAL Collaboration
Using approximately 4.3 million hadronic Z^0 decays collected with the OPAL detector at LEP between 1990 and 1995, we measure the branching fractions of the Z^0 into up-type and down-type light quarks, R_q, and the forward-backward asymmetries, A_FB(q), using high-momentum stable particles as a tag. Adopting a method that employs double tagged events to determine the flavour tagging efficiencies, and assuming the flavour independence of strong interactions and SU(2) isospin symmetry, we measure: R_{d,s}/(R_d + R_u + R_s) = 0.371 +/- 0.016(stat.) +/- 0.016(syst.) and A_FB(d,s) = 0.068 +/- 0.035(stat.) +/- 0.011(syst.), assuming the branching fractions and forward-backward asymmetries of down and strange quarks to be equal. [...]
hep-ex/9707019; CERN-PPE-97-063; CERN-PPE-97-63; CERN-PPE-97-063.- Geneva : CERN, 1997 - 34 p. - Published in : Z. Phys. C 76 (1997) 387-400 Fulltext: 9707019 - PDF; arXiv:hep-ex_9707019 - PDF; External link: hep-ex/9707019 PDF - Please contact the library if you need to access this document.
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7.
(80)
Update of the search for supersymmetric particles in scenarios with Gravitino LSP and Sleptons NLSP / DELPHI Collaboration
An update of the search for sleptons, neutralinos and charginos in the context of scenarios where the lightest supersymmetric particle is the gravitino and the next-to-lightest supersymmetric particle is a slepton, is presented, together with the update of the search for heavy stable charged particles in light gravitino scenarios and Minimal Supersymmetric Standard Models. Data collected in 1999 with the DELPHI detector at centre-of-mass energies around 192, 196, 200 and 202 GeV were analysed. [...]
hep-ex/0102038; CERN-EP-2001-011; CERN-EP-2001-011.- Geneva : CERN, 2001 - 21 p. - Published in : Phys. Lett. B 503 (2001) 34-48 Fulltext: ep-2001-011 - PDF; arXiv:hep-ex_0102038 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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8.
(80)
Midrapidity antiproton-to-proton ratio in pp collisions at $\sqrt{s} = 0.9$ and $7$~TeV measured by the ALICE experiment / ALICE collaboration
The ratio of the yields of antiprotons to protons in pp collisions has been measured by the ALICE experiment at $\sqrt{s} = 0.9$ and $7$~TeV during the initial running periods of the Large Hadron Collider(LHC). The measurement covers the transverse momentum interval $0.45 < p_{\rm{t}} < 1.05$~GeV/$c$ and rapidity $|y| < 0.5$. [...]
arXiv:1006.5432.- 2010 - 12 p. - Published in : Phys. Rev. Lett. 105 (2010) 072002 APS Open Access article: PDF; Fulltext: PDF; External link: DURHAM
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9.
(80)
Strangeness production at SPS energies / NA49 Collaboration
We present a summary of measurements of strange particles performed by the experiment NA49 in central and minimum bias Pb+Pb collisions in the beam energy range 20A - 158A GeV. New results on Xi production in central Pb+Pb collisions and on Lambda, Xi production in minimum bias collisions are shown. [...]
nucl-ex/0606004.- 2006 - 9 p. - Published in : J. Phys. G 32 (2006) S43-S50 Access to fulltext document: PDF; Fulltext: PDF; External link: nucl-ex/0606004 PDF
In : International Conference On Strangeness In Quark Matter, Los Angeles, CA, USA, 26 - 31 Mar 2006, pp.s43-s50
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10.
(79)
Flavour Independent Searches for Hadronically Decaying Neutral Higgs Bosons / DELPHI Collaboration
This paper describes flavour independent searches for hadronically decaying neutral Higgs bosons in the data collected by the DELPHI experiment at LEP, at centre-of-mass energies between 189 and 209 GeV. The collected data-set corresponds to an integrated luminosity of around 610 pb^{-1}. [...]
hep-ex/0510022; CERN-PH-EP-2004-066; CERN-EP-PH-2004-066-[SIC!]; CERN-PH-EP-2004-066.- Geneva : CERN, 2005 - 26 p. - Published in : Eur. Phys. J. C 44 (2005) 147-159 Fulltext: phep-2004-066 - PDF; arXiv:hep-ex_0510022 - PDF; 0510022 - PDF; External link: Preprint
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