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CERN Document Server 找到 2,051 筆記錄  1 - 10下一個最後  跳到記錄: 檢索需時 1.24 秒. 
1.
(100)
A study of the b-quark fragmentation function with the DELPHI detector at LEP I and an averaged distribution obtained at the Z Pole / DELPHI Collaboration
The nature of b-quark jet hadronisation has been investigated using data taken at the Z peak by the DELPHI detector at LEP. Two complementary methods are used to reconstruct the energy of weakly decaying b-hadrons, E^weak_B. [...]
arXiv:1102.4748; CERN-PH-EP-2010-057; CERN-PH-EP-2010-057.- Geneva : CERN, 2011 - 50 p. - Published in : Eur. Phys. J. C 71 (2011) 1557 Fulltext: CERN-PH-EP-2010-057 - PDF; arXiv:1102.4748 - PDF; Preprint: PDF; External link: Rivet analyses reference
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2.
(91)
Measurements of CP-conserving Trilinear Gauge Boson Couplings WWV (V = $\gamma$,Z) in $e^+e^-$ Collisions at LEP2 / DELPHI Collaboration
The data taken by DELPHI at centre-of-mass energies between 189 and 209 GeV are used to place limits on the CP-conserving trilinear gauge boson couplings Delta_g1z, lambda_gamma and Delta_kappag associated to W+W- and single W production at LEP2. Using data from the jjlv, jjjj, jjX and lX final states, where j, l and X represent a jet, a lepton and missing four-momentum, respectively, the following limits are set on the couplings when one parameter is allowed to vary and the others are set to their Standard Model values of zero: Delta_g1z = -0.025^{+0.033}_{-0.030}, lambda_gamma = 0.002^{+0.035}_{-0.035} and Delta_kappag = 0.024^{+0.077}_{-0.081} . [...]
arXiv:1002.0752; CERN-PH-EP-2009-020; CERN-PH-EP-2009-020.- Geneva : CERN, 2010 - 38 p. - Published in : Eur. Phys. J. C 66 (2010) 35-36 Fulltext: arXiv:1002.0752 - PDF; 10052_2010_1254_OnlinePDF - PDF; External link: Preprint
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3.
(91)
Search for single top quark production via contact interactions at LEP2 / DELPHI Collaboration
Single top quark production via four-fermion contact interactions associated to flavour-changing neutral currents was searched for in data taken by the DELPHI detector at LEP2. The data were accumulated at centre-of-mass energies ranging from 189 to 209 GeV, with an integrated luminosity of 598.1 pb^-1. [...]
arXiv:1102.4455; CERN-PH-EP-2010-056; CERN-PH-EP-2010-056.- Geneva : CERN, 2011 - 22 p. - Published in : Eur. Phys. J. C 71 (2011) 1555 Fulltext: CERN-PH-EP-2010-056 - PDF; arXiv:1102.4455 - PDF; Preprint: PDF;
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4.
(88)
Study of the Dependence of Direct Soft Photon Production on the Jet Characteristics in Hadronic $Z^0$ Decays / DELPHI Collaboration
An analysis of the direct soft photon production rate as a function of the parent jet characteristics is presented, based on hadronic events collected by the DELPHI experiment at LEP1. The dependences of the photon rates on the jet kinematic characteristics (momentum, mass, etc.) and on the jet charged, neutral and total hadron multiplicities are reported. [...]
arXiv:1004.1587; CERN-PH-EP-2009-014; CERN-PH-EP-2009-014.- 2010 - 40 p. - Published in : Eur. Phys. J. C 67 (2010) 343-366 Fulltext: arXiv:1004.1587 - PDF; 10052_2010_1315_OnlinePDF - PDF; External link: Preprint
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5.
(81)
A Study of $b\overline{b}$ Production in $e^{+}e^{-}$ Collisions at $\sqrt{s}$ = 130-207 GeV / DELPHI Collaboration
Measurements are presented of R_b, the ratio of the b bbar cross-section to the q qbar cross-section in e+e- collisions, and the forward-backward asymmetry A^b_FB at twelve energy points in the range sqrt(s) = 130-207 GeV. These results are found to be consistent with the Standard Model expectations. [...]
arXiv:0901.4461; CERN-PH-EP-2008-018; CERN-PH-EP-2008-018.- 2009 - 21 p. - Published in : Eur. Phys. J. C 60 (2009) 1-15 Fulltext: arXiv:0901.4461 - PDF; 10052_2009_917_OnlinePDF - PDF; External link: Fulltext
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6.
(72)
Inclusive single-particle production in two-photon collisions at LEP II with the DELPHI detector / DELPHI Collaboration
A study of the inclusive charged hadron production in two-photon collisions is described. The data were collected with the DELPHI detector at LEP II. [...]
arXiv:0906.5302; CERN-PH-EP-2008-017; CERN-PH-EP-2008-017.- Geneva : CERN, 2009 - 15 p. - Published in : Phys. Lett. B 678 (2009) 444-449 Fulltext: arXiv:0906.5302 - PDF; S0370269309007503 - XML;
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7.
(71)
Proposal for taking data with the KLOE-2 detector at the DA$\Phi$NE collider upgraded in energy / Babusci, D. (Frascati) ; Bini, C. (Rome U. ; INFN, Rome) ; Bossi, F. (Frascati) ; Isidori, G. (Frascati) ; Moricciani, D. (Rome U., Tor Vergata ; INFN, Rome2) ; Nguyen, F. (Rome III U. ; INFN, Rome3) ; Raimondi, P. (Frascati) ; Venanzoni, G. (Frascati) ; Alesini, D. (Frascati) ; Archilli, F. (Rome U., Tor Vergata ; INFN, Rome2) et al.
This document reviews the physics program of the KLOE-2 detector at DA$\Phi$NE upgraded in energy and provides a simple solution to run the collider above the $\phi$-peak (up to 2, possibly 2.5 GeV). [...]
arXiv:1007.5219 ; LNF-10-17-P ; LNF-10-17(P). - 2010. - 22 p.
Preprint - Full text
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8.
(68)
Study of b-quark mass effects in multijet topologies with the DELPHI detector at LEP / DELPHI Collaboration
The effect of the heavy b-quark mass on the two, three and four-jet rates is studied using LEP data collected by the DELPHI experiment at the Z peak in 1994 and 1995. The rates of b-quark jets and light quark jets (l = uds) in events with n = 2, 3, and 4 jets, together with the ratio of two and four-jet rates of b-quarks with respect to light-quarks, R_n^bl, have been measured with a double-tag technique using the CAMBRIDGE jet-clustering algorithm. [...]
arXiv:0804.3883; CERN-PH-EP-2007-011; CERN-PH-EP-2007-011.- 2008 - 24 p. - Published in : Eur. Phys. J. C 55 (2008) 525-538 Fulltext: PDF; External link: Fulltext
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9.
(68)
Observation of the Muon Inner Bremsstrahlung at LEP1 / DELPHI Collaboration
Muon bremsstrahlung photons converted in front of the DELPHI main tracker (TPC) in dimuon events at LEP1 were studied in two photon kinematic ranges: 0.2 < E_gamma <= 1 GeV and transverse momentum with respect to the parent muon p_T < 40 MeV/c, and 1 < E_gamma <= 10 GeV and p_T < 80 MeV/c . A good agreement of the observed photon rate with predictions from QED for the muon inner bremsstrahlung was found, contrary to the anomalous soft photon excess that has been observed recently in hadronic Z^0 decays. [...]
arXiv:0901.4488; CERN-PH-EP-2007-012; CERN-PH-EP-2007-012.- 2008 - 24 p. - Published in : Eur. Phys. J. C 57 (2008) 499-514 Fulltext: arXiv:0901.4488 - PDF; 10052_2008_779_OnlinePDF - PDF; External link: Fulltext
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10.
(68)
Correlations between Polarisation States of W Particles in the Reaction $e^- e^+\to W^- W^+$ at LEP2 Energies 189-209 GeV / DELPHI Collaboration
In a study of the reaction e-e+ -> W-W+ with the DELPHI detector, the probabilities of the two W particles occurring in the joint polarisation states transverse-transverse (TT), longitudinal-transverse plus transverse-longitudinal (LT) and longitudinal-longitudinal (LL) have been determined using the final states WW -> l nu q qbar (l = e, mu). The two-particle joint polarisation probabilities, i.e. [...]
arXiv:0908.1023; CERN-PH-EP-2009-003; CERN-PH-EP-2009-003.- Geneva : CERN, 2009 - 20 p. - Published in : Eur. Phys. J. C 63 (2009) 611-623 Fulltext: PDF; External link: Preprint
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