CERN Accelerating science

Pàgina inicial > Resultats de la cerca: recid:692245
Consells de cerca
Cerca avançada
Add to Search +
Cerca col·leccions:
Ordena'ls per: Mostrar els resultats: Format de visualizació:
CERN Document Server 2,044 registres trobats  1 - 10següentfinal  anar al registre: La cerca s'ha fet en 0.81 segons. 
1.
(100)
Measurement of the partial widths of the Z into up- and down-type quarks / OPAL Collaboration
Using the entire OPAL LEP1 on-peak Z hadronic decay sample, Z -> qbarq gamma decays were selected by tagging hadronic final states with isolated photon candidates in the electromagnetic calorimeter. Combining the measured rates of Z -> qbarq gamma decays with the total rate of hadronic Z decays permits the simultaneous determination of the widths of the Z into up- and down-type quarks. [...]
hep-ex/0312043; CERN-EP-2003-082; CERN-EP-2003-082.- Geneva : CERN, 2004 - 23 p. - Published in : Phys. Lett. B 586 (2004) 167-182 Fulltext: ep-2003-082 - PDF; arXiv:hep-ex_0312043 - PDF; External link: Preprint - Please contact the library if you need to access this document.
Registre complet - Registres semblants
2.
(91)
The $\eta_c$(2980) formation in two-photon collisions at LEP energies / DELPHI Collaboration
eta_c(2980) production in gamma-gamma interactions has been detected via its decays into K0_s K+/- pi-/+, K+ K- K+ K- and K+ K- pi+ pi- in the data taken with the DELPHI detector at LEP1 and LEP2 energies. The two-photon radiative width averaged over all observed decay channels is \Gamma_{\gamma\gamma} = 13.9 +/- 2.0 (stat.) +/- 1.4 (syst.) +/- 2.7 (BR) keV. [...]
hep-ex/0311002; CERN-EP-2003-035; CERN-EP-2003-035.- Geneva : CERN, 2003 - 12 p. - Published in : Eur. Phys. J. C 31 (2003) 481-489 Fulltext: arXiv:hep-ex_0311002 - PDF; ep-2003-035 - PDF; External link: Preprint - Please contact the library if you need to access this document.
Registre complet - Registres semblants
3.
(84)
Measurement of the $B^0_s$ Lifetime and Study of $B^0_s - \overline{B^0_s}$ Oscillations using $D_{s}l$ Events / DELPHI Collaboration
Lifetime and oscillations of $\Bs$ mesons have been studied in eventswith a large transverse momentum lepton and a $\Ds$ of opposite electric charge>the same hemisphere, selected from about 3.6 million hadronic $\Zz$decays accumulated by DELPHI between 1992 and 1995. \\The $\Bs$ lifetime and the fractional width difference between the two physical>
hep-ex/0107077; CERN-EP-2000-043; CERN-EP-2000-043.- Geneva : CERN, 2000 - 47 p. - Published in : Eur. Phys. J. C 16 (2000) 555-578 Fulltext: ep-2000-043 - PDF; arXiv:hep-ex_0107077 - PDF; External link: Preprint - Please contact the library if you need to access this document.
Registre complet - Registres semblants
4.
(83)
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.
Registre complet - Registres semblants
5.
(82)
A Precise Measurement of the Tau Lifetime / DELPHI Collaboration
The tau lepton lifetime has been measured with the e+e- -> tau+tau- events collected by the DELPHI detector at LEP in the years 1991-1995. Three different methods have been exploited, using both one-prong and three-prong tau decay channels. [...]
hep-ex/0410010; CERN-EP-2003-070; CERN-EP-2003-070.- Geneva : CERN, 2004 - 27 p. - Published in : Eur. Phys. J. C 36 (2004) 283-296 Fulltext: ep-2003-070 - PDF; arXiv:hep-ex_0410010 - PDF; External link: Preprint - Please contact the library if you need to access this document.
Registre complet - Registres semblants
6.
(79)
A Measurement of the Tau Topological Branching Ratios / DELPHI Collaboration
Using data collected in the DELPHI detector at LEP-1, measurements of the inclusive tau branching ratios for decay modes containing one, three, or five charged particles have been performed, giving the following results: B_1 = B(\tau^- -> (particle)^- \geq 0pi^0 \geq 0K^0 \nu_\tau(\bar{\nu})) = (85.316 +/- 0.093 +/- 0.049)%; B_3 = B(\tau^- -> 2h^-h^+ \geq 0pi^0 \geq 0K^0 \nu_\tau) = (14.569 +/- 0.093 +/- 0.048)%; B_5 = B(\tau^- -> 3h^-2h^+ \geq 0pi^0 \geq 0K^0 \nu_\tau) = (0.115 +/- 0.013 +/- 0.006)%, where h is either a charged pi or K meson. The first quoted uncertainties are statistical and the second systematic..
hep-ex/0105047; CERN-EP-2001-030; CERN-DELPHI-2001-091-CONF-519; CERN-EP-2001-030; DELPHI-2001-091-CONF-519.- Geneva : CERN, 2001 - 32 p. - Published in : Eur. Phys. J. C 20 (2001) 617-637 Fulltext: 0105047 - PDF; arXiv:hep-ex_0105047 - PDF; External link: Preprint - Please contact the library if you need to access this document.
Registre complet - Registres semblants
7.
(77)
Fine structure in the α decay of At218 / IS534 Collaboration
2019 - Published in : 10.1103/PhysRevC.99.064317
Registre complet - Registres semblants
8.
(76)
Measurement of the semileptonic b branching fractions and average b mixing parameter in Z decays / DELPHI Collaboration
The semileptonic branching fractions for primary and cascade b decays BR(b -> lepton-), BR(b -> c -> lepton+) and BR(b -> cbar -> lepton-) were measured in hadronic Z decays collected by the DELPHI experiment at LEP. The sample was enriched in b decays using the lifetime information and various techniques were used to separate leptons from direct or cascade b decays [...]
hep-ex/0105080; CERN-EP-2000-157; CERN-EP-2000-157.- Geneva : CERN, 2001 - 40 p. - Published in : Eur. Phys. J. C 20 (2001) 455-478 Fulltext: arXiv:hep-ex_0105080 - PDF; ep-2000-157 - PDF; External link: Preprint
In : 30th International Conference on High-energy Physics, Osaka, Japan, 27 Jul - 2 Aug 2000, pp.e-page 408 - Please contact the library if you need to access this document.
Registre complet - Registres semblants
9.
(76)
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.
Registre complet - Registres semblants
10.
(76)
Study of Dimuon Production in Photon-Photon Collisions and Measurement of QED Photon Structure Functions at LEP / DELPHI Collaboration
Muon pair production in the process $e^+e^-\to e^+e^-\mu^+\mu^-$ is studied using the data taken at LEP1 ($\sqrt{s}\simeq m_Z$) with the DELPHI detector during the years 1992-1995. The corresponding integrated luminosity is 138.5~pb$^{-1}$. [...]
hep-ex/0105084; CERN-EP-2000-150; CERN-EP-2000-150.- Geneva : CERN, 2001 - 23 p. - Published in : Eur. Phys. J. C 19 (2001) 15-28 Fulltext: ep-2000-150 - PDF; arXiv:hep-ex_0105084 - PDF; External link: Preprint
In : 30th International Conference on High-energy Physics, Osaka, Japan, 27 Jul - 2 Aug 2000, pp.e-page 391 - Please contact the library if you need to access this document.
Registre complet - Registres semblants

No heu trobat el que estaveu cercant? Proveu la vostra cerca a:
recid:692245 dins Amazon
recid:692245 dins CERN EDMS
recid:692245 dins CERN Intranet
recid:692245 dins CiteSeer
recid:692245 dins Google Books
recid:692245 dins Google Scholar
recid:692245 dins Google Web
recid:692245 dins IEC		recid:692245 dins IHS
recid:692245 dins INSPIRE
recid:692245 dins ISO
recid:692245 dins KISS Books/Journals
recid:692245 dins KISS Preprints
recid:692245 dins NEBIS
recid:692245 dins SLAC Library Catalog