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CERN Document Server Encontrados 2,051 registros  1 - 10siguientefinal  ir al registro: La búsqueda tardó 1.28 segundos. 
1.
(100)
An upper limit on the $\tau$ neutrino mass from three- and five-prong tau decays / ALEPH Collaboration
A bound on the tau neutrino mass is established using the data collected from 1991 to 1995 at Ecm = M(Z) with the ALEPH detector. Two separate limits are derived by fitting the distribution of visible energy vs invariant mass in tau+ -> pi+ pi+ pi- nu and tau+ -> pi+ pi+ pi- pi- pi+ (pi0) nu decays. [...]
CERN-PPE-97-138.- Geneva : CERN, 1998 - 23 p. ALEPH Papers - Published in : Eur. Phys. J. C 2 (1998) 395-406 Fulltext: PDF; - CERN library copies
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2.
(91)
Measurement of tau branching ratios / ALEPH Collaboration
CERN-PPE-91-186.- Geneva : CERN, 1992 - 40 p. ALEPH Papers - Published in : Z. Phys. C 54 (1992) 211-228 Fulltext: PDF; - CERN library copies
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3.
(91)
$K^{0}_{S}$ production in $\tau$ decays / ALEPH Collaboration
From a sample of about 160k $\mbox{Z}\!\!\to\!\!\tau^+\tau^-$ candidates collected with the ALEPH detector at LEP between 1991 and 1995, $\tau$ lepton decays involving $K^0_S\!\to\!\pi^+\pi^-$ are studied. The $K^0_SK^0_L$ associated production in $\tau$ decays is also investigated. [...]
CERN-PPE-97-167; FSU-SCRI-98-84.- Tallahassee, FL : Florida State Univ., 1998 - 28 p. ALEPH Papers - Published in : Eur. Phys. J. C 4 (1998) 29-45 Fulltext: PDF; - CERN library copies
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4.
(91)
A measurement of the semileptonic branching ratio BR(b-baryon $\rightarrow p l\overline{\nu}X$) and a study of inclusive $\pi^{\pm}$, $K^{\pm}$, ($p,\overline{p}$) production in Z decays / ALEPH Collaboration
Inclusive pi^+/-, K^+/- (p,pbar) production is investigated using data recorded by the ALEPH detector between 1992 and 1994. The momentum spectra and multiplicities are measured separately in Z -->bbar, Z-->ccbar and Z-->uubar,ddbar,ssbar decays. [...]
CERN-PPE-97-153.- Geneva : CERN, 1998 - 37 p. ALEPH Papers - Published in : Eur. Phys. J. C 5 (1998) 205-227 Fulltext: PDF; - CERN library copies
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5.
(87)
Michel parameters and $\tau$ neutrino helicity from decay correlations in $Z \rightarrow \tau^{+}\tau^{-}$ / ALEPH Collaboration
CERN-PPE-94-209.- Geneva : CERN, 1995 - 13 p. ALEPH Papers - Published in : Phys. Lett. B 363 (1995) 265 (Erratum)
- Published in : Phys. Lett. B 346 (1995) 379-388 Fulltext: PDF; - CERN library copies
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6.
(85)
Inclusive $\pi^{\pm}$, K$^{\pm}$ and (p,$\overline{p}$) differential cross-sections at the Z resonance / ALEPH Collaboration
CERN-PPE-94-201; FSU-SCRI-95-62.- Tallahassee, FL : Florida State Univ., 1995 - 22 p. ALEPH Papers - Published in : Z. Phys. C 66 (1995) 355-365 Fulltext: PDF; - CERN library copies
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7.
(84)
Resonant structure and flavour tagging in the $B\pi^{\pm}$ system using fully reconstructed $B$ decays / ALEPH Collaboration
Starting from a sample of four million hadronic $Z$ decays collected with the ALEPH detector at LEP, 404 charged and neutral $B$ mesons are fully reconstructed and used to look for resonant structure in the $B\pi$ system. An excess of events is observed above the expected background in the $B\pi$ mass spectrum at a mass $\approx 5.7$ GeV/c$^2$, consistent with the production and decay to $B^{(*)}\pi$ of the $B^{**}$ states predicted by Heavy Quark Symmetry (HQS). [...]
CERN-EP-98-017; FSU-SCRI-98-76.- Tallahassee, FL : Florida State Univ., 1998 - 13 p. ALEPH Papers - Published in : Phys. Lett. B 425 (1998) 215 Fulltext: PDF;
In : 28th International Conference on High-energy Physics, Warsaw, Poland, 25 - 31 Jul 1996, pp.PA01-070 - CERN library copies
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8.
(83)
An upper limit for the $\tau$ neutrino mass from $\tau \to 5\pi(\pi^{0})\nu_{\tau}$ decays / ALEPH Collaboration
CERN-PPE-95-03; FSU-SCRI-95-69.- Tallahassee, FL : Florida State Univ., 1995 - 17 p. ALEPH Papers - Published in : Phys. Lett. B 349 (1995) 585-596 Fulltext: PDF; - CERN library copies
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9.
(81)
Tau hadronic branching ratios / ALEPH Collaboration
From 64492 selected \tau-pair events, produced at the Z^0 resonance, the measurement of the tau decays into hadrons from a global analysis using 1991, 1992 and 1993 ALEPH data is presented. Special emphasis is given to the reconstruction of photons and \pi^0's, and the removal of fake photons [...]
CERN-PPE-95-140; FSU-SCRI-96-65.- Geneva : CERN, 1996 - 67 p. ALEPH Papers - Published in : Z. Phys. C 70 (1996) 579-608 Fulltext: PDF; - CERN library copies
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10.
(80)
Three-prong $\tau$ decays with charged kaons / ALEPH Collaboration
Final states with charged kaons in three-prong $\tau$ decays are studied by exploiting the particle identification from the dE/dx measurement. The results are based on a sample of about $1.6\times 10^{5}$ detected $\tau$ pairs collected with the ALEPH detector between 1991 and 1995 around the Z peak. [...]
CERN-PPE-97-069.- Geneva : CERN, 1998 - 33 p. ALEPH Papers - Published in : Eur. Phys. J. C 1 (1998) 65-79 Fulltext: PDF; - CERN library copies
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