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CERN Document Server Намерени са 2,051 записа  1 - 10следващкрай  отиване на запис: Търсенето отне 1.45 секунди. 
1.
(100)
Mass limit for the lightest neutralino / ALEPH Collaboration
Indirect limits on the mass of the lightest neutralino are derived from the results of searches for charginos, neutralinos, and sleptons performed with data taken by the ALEPH Collaboration at centre-of-mass energies near the Z peak and at 130 and 136 GeV. Within the context of the Minimal Supersymmetric Standard Model and when $M_{\tilde\nu}\ge 200$ GeV/c~2, the bound $M_\chi>12.8$ GeV/c~2 at the 95\% confidence level applies for any $\tan\beta$. [...]
hep-ex/9607009; CERN-PPE-96-83; FSU-SCRI-97-34; hep-ex/9607009.- Geneva : CERN, 1996 - 30 p. ALEPH Papers Fulltext: arXiv:hep-ex_9607009 - PDF; ppe-96-083 - PDF; - Please contact the library if you need to access this document.
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2.
(91)
A Measurement of the b-quark Mass from Hadronic Z Decays / ALEPH Collaboration
Hadronic Z decay data taken with the ALEPH detector at LEP1 are used to measure the three-jet rate as well as moments of various event-shape variables. The ratios of the observables obtained from b-tagged events and from an inclusive sample are determined. [...]
hep-ex/0008013; CERN-EP-2000-093; CERN-EP-2000-093.- Geneva : CERN, 2000 - 24 p. ALEPH Papers - Published in : Eur. Phys. J. C 18 (2000) 1-13 Fulltext: ep-2000-093 - PDF; arXiv:hep-ex_0008013 - PDF; External link: Preprint
In : 30th International Conference on High-energy Physics, Osaka, Japan, 27 Jul - 2 Aug 2000, pp.e-page 226 - Please contact the library if you need to access this document.
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3.
(91)
Measurements of $BR(b \to \tau^{-}\overline{\nu}_{\tau}X)$ and $BR(b \to \tau^{-}\overline{\nu}_{\tau} D^{*\pm}X)$ and Upper Limits on $BR(B^{-} \to \tau^{-}\overline{\nu}_{\tau})$ and $BR(b \to s\nu\overline{\nu})$ / ALEPH Collaboration
Inclusive branching ratios involving b to tau transitions are measured in approximately four million hadronic Z decays collected by the ALEPH detector at LEP. The fully-inclusive branching ratio b -> tau nu X and the semi-inclusive branching ratio b -> tau nu D*+/- X are measured to be (2.43 +/- 0.20 +/- 0.25)% and (0.88 +/- 0.31 +/- 0.28)%, in agreement with the standard model predictions. [...]
hep-ex/0010022; CERN-EP-2000-126; CERN-EP-2000-126.- Geneva : CERN, 2001 - 29 p. ALEPH Papers - Published in : Eur. Phys. J. C 19 (2001) 213 Fulltext: arXiv:hep-ex_0010022 - PDF; ep-2000-126 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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4.
(89)
Search for scalar leptons in $e^+ e^-$ collisions at centre-of-mass energies up to 209 GeV / ALEPH Collaboration
A search for selectron, smuon and stau pair production is performed with the data collected by the ALEPH detector at LEP at centre-of-mass energies up to 209 GeV. The numbers of candidate events are consistent with the background predicted by the Standard Model. [...]
hep-ex/0112011; CERN-EP-2001-086; CERN-EP-2001-086.- Geneva : CERN, 2002 - 15 p. ALEPH Papers - Published in : Phys. Lett. B 526 (2002) 206-220 Fulltext: fig2a_l_col - EPS; fig2b_r_col - EPS; arXiv:hep-ex_0112011 - PDF; fig2c_l_col - EPS; fig3a_r_col - EPS; fig3c_r_col - EPS; ep-2001-086 - PDF; fig2a_r_col - EPS; fig3c_l_col - EPS; fig2c_r_col - EPS; stau_dm - EPS; fig2b_l_col - EPS; fig3a_l_col - EPS; fig3b_r_col - EPS; fig3b_l_col - EPS; External link: Preprint - Please contact the library if you need to access this document.
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5.
(89)
Measurement of $A^{b}_{FB}$ using Inclusive $b$-hadron Decays / ALEPH Collaboration
Based on a sample of four million events collected by ALEPH from 1991 to 1995, a measurement of the forward-backward asymmetry in Z -> b-barb decays using inclusive final states is presented. High-performance tagging of b-barb events in a wide angular range is achieved using neural network techniques. [...]
hep-ex/0107033; CERN-EP-2001-047; CERN-EP-2001-047.- Geneva : CERN, 2001 - 25 p. ALEPH Papers - Published in : Eur. Phys. J. C 22 (2001) 201-215 Fulltext: ep-2001-047 - PDF; arXiv:hep-ex_0107033 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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6.
(88)
Search for R-Parity Violating Production of Single Sneutrinos in $e^{+}e^{-}$ Collisions at $\sqrt{s}$ = 189-209 GeV / ALEPH Collaboration
A search for single sneutrino production under the assumption that $R$-parity is violated via a single dominant $LL\bar{E}$ coupling is presented. This search considers the process ${\rm e} \gamma \;{\smash{\mathop{\rightarrow}}}\;\tilde{\nu}\ell$ and is performed using the data collected by the ALEPH detector at centre-of-mass energies from 189\,GeV up to 209\,GeV corresponding to an integrated luminosity of 637.1\,$\mathrm{pb}^{-1}$. [...]
hep-ex/0201013; CERN-EP-2001-094; CERN-EP-2001-094.- Geneva : CERN, 2002 - 22 p. ALEPH Papers - Published in : Eur. Phys. J. C 25 (2002) 1-12 Fulltext: ep-2001-094 - PDF; arXiv:hep-ex_0201013 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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7.
(88)
Study of the fragmentation of $b$ quarks into $B$ mesons at the $Z$ peak / ALEPH Collaboration
The fragmentation of b quarks into B mesons is studied with four million hadronic Z decays collected by the ALEPH experiment during the years 1991-1995. A semi-exclusive reconstruction of B->l nu D(*) decays is performed, by combining lepton candidates with fully reconstructed D(*) mesons while the neutrino energy is estimated from the missing energy of the event. [...]
hep-ex/0106051; CERN-EP-2001-039; CERN-EP-2001-039.- Geneva : CERN, 2001 - 25 p. ALEPH Papers - Published in : Phys. Lett. B 512 (2001) 30-48 Fulltext: ep-2001-039 - PDF; arXiv:hep-ex_0106051 - PDF; External links: Fulltext; Rivet analyses reference - Please contact the library if you need to access this document.
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8.
(88)
Inclusive semileptonic branching ratios of b hadrons produced in Z decays / ALEPH Collaboration
A measurement of the inclusive semileptonic branching ratios of b hadrons produced in Z decay is presented, using four million hadronic events collected by the ALEPH detector from 1991 to 1995. Electrons and muons are selected opposite to b-tagged hemispheres [...]
hep-ex/0108007; CERN-EP-2001-057; CERN-EP-2001-057.- Geneva : CERN, 2002 - 24 p. ALEPH Papers - Published in : Eur. Phys. J. C 22 (2002) 613-626 Fulltext: arXiv:hep-ex_0108007 - PDF; ep-2001-057 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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9.
(87)
Search for sleptons in $e^+ e^-$ collisions at centre-of-mass energies of 161 GeV and 172 GeV / ALEPH Collaboration
The data recorded by the ALEPH experiment at LEP at centre-of-mass energies of 161 GeV and 172 GeV were analysed to search for sleptons, the supersymmetric partners of leptons. No evidence for the production of these particles was found. [...]
hep-ex/9706006; CERN-PPE-97-056; CERN-PPE-97-56; FSU-SCRI-97-125; CERN-PPE-97-056.- Geneva : CERN, 1997 - 17 p. ALEPH Papers - Published in : Phys. Lett. B 407 (1997) 377-388 Fulltext: arXiv:hep-ex_9706006 - PDF; 9706006 - PDF; External link: hep-ex/9706006 PDF - Please contact the library if you need to access this document.
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10.
(87)
Search for supersymmetry with a dominant R-parity violating $LL\overline{E}$ coupling in $e^+ e^-$ collisions at centre-of-mass energies of 130 GeV to 172 GeV / ALEPH Collaboration
A search for pair-production of supersymmetric particles under the assumption that R-parity is violated via a dominant LLE coupling has been performed using the data collected by ALEPH at centre-of-mass energies of 130-172 GeV. The observed candidate events in the data are in agreement with the Standard Model expectation. [...]
hep-ex/9712013; CERN-PPE-97-151; CERN-PPE-97-151; CERN-ALEPH-98-017.- Geneva : CERN, 1998 - 31 p. ALEPH Papers - Published in : Eur. Phys. J. C 4 (1998) 433-451 Fulltext: 9712013 - PDF; ppe-97-151 - PDF; arXiv:hep-ex_9712013 - PDF; External link: hep-ex/9712013 PDF - Please contact the library if you need to access this document.
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