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CERN Document Server 2,051 records found  1 - 10nextend  jump to record: Search took 1.16 seconds. 
1.
(100)
Quark and gluon jet properties in symmetric three-jet events / ALEPH Collaboration
Quark and gluon jets with the same energy, 24GeV, are compared in symmetric three-jet configurations from hadronic Z decays observed by the ALEPH detector. Jets are defined using the Durham algorithm. [...]
CERN-PPE-95-184; FSU-SCRI-96-140.- Geneva : CERN, 1996 - 13 p. ALEPH Papers - Published in : Phys. Lett. B 384 (1996) 353-364 Fulltext: PDF;
In : 28th International Conference on High-energy Physics, Warsaw, Poland, 25 - 31 Jul 1996, pp.PA04-065 - CERN library copies
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2.
(91)
Search for CP violation in the decay Z --> b$\overline{b}$g / ALEPH Collaboration
About three million hadronic decays of the Z collected by ALEPH in the years 1991-1994 are used to search for anomalous CP violation beyond the Standard Model in the decay Z -> b \bar{b} g. The study is performed by analyzing angular correlations between the two quarks and the gluon in three-jet events and by measuring the differential two-jet rate. [...]
hep-ex/9608001; HD-IHEP-96-07.- Geneva : CERN, 1996 - 8 p. ALEPH Papers - Published in : Nucl. Phys. Proc. Suppl. 54 (1997) 29-33 Fulltext: ppe-96-071 - PDF; arXiv:hep-ex_9608001 - PDF;
In : 4th Conference on Quantum Chromodynamics, Montpellier, France, 4 - 12 Jul 1996, pp.29-33 - Please contact the library if you need to access this document.
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3.
(85)
The topology dependence of charged particle multiplicities in three-jet events / ALEPH Collaboration
A study of individual jet and whole-event charged particle multiplicities in three-jet events measured in e+e- annihilation at the Z reveals a significant topology dependence. Mean jet multiplicities are inadequately described by jet energies; interjet angles must also be specified. [...]
CERN-PPE-97-003.- Geneva : CERN, 1997 - 19 p. ALEPH Papers - Published in : Z. Phys. C 76 (1997) 191-199 Fulltext: PDF; - CERN library copies
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4.
(80)
Inclusive Production of $\pi^{0}$, $\eta$, $\eta$'(958), $K^0_s$ and $\Lambda$ in Two- and Three-Jet Events from Hadronic Z Decays / ALEPH Collaboration
The production rates and the inclusive cross sections of the isovector meson $\pi^0$, the isoscalar mesons $\eta$ and $\eta^\prime(958)$, the strange meson $\mathrm{K^0_S}$ and the $\Lambda$ baryon have been measured as functions of scaled energy in hadronic events two-jet events and each jet of three-jet events from hadronic Z decays and compared to Monte Carlo models. The analysis is based on 3.7~million hadronic events collected with the ALEPH detector at LEP at a centre-of-mass energy of $\sqrt{s}=91.2$~GeV. [...]
CERN-EP-99-105; CERN-ALEPH-99-066.- Geneva : CERN, 2001 - 39 p. ALEPH Papers Fulltext: PDF;
In : 30th International Conference on High-energy Physics, Osaka, Japan, 27 Jul - 2 Aug 2000, pp.e-page 141 - Please contact the library if you need to access this document.
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5.
(75)
A measurement of the inclusive $b \to s \gamma$ branching ratio / ALEPH Collaboration
FSU-SCRI-98-78.- Tallahassee, FL : Florida State Univ., 1998 - Published in : Phys. Lett. B 429 (1998) 169-187
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6.
(75)
Measurement of the fraction of hadronic Z decays into charm quark pairs / ALEPH Collaboration
CERN-EP-98-035.- Geneva : CERN, 1998 - 23 p. ALEPH Papers - Published in : Eur. Phys. J. C 4 (1998) 557-570 Fulltext: PDF; - CERN library copies
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7.
(72)
Measurements of the structure of quark and gluon jets in hadronic Z decays / ALEPH Collaboration
An experimental investigation of the structure of identified quark and gluon jets is presented. Observables related to both the global and internal structure of jets are measured; this allows for tests of QCD over a wide range of transverse momentum scales. [...]
CERN-EP-98-016.- Geneva : CERN, 2000 - 21 p. ALEPH Papers - Published in : Eur. Phys. J. C 17 (2000) 1-18 Fulltext: ep-98-016 - PDF; ep-98-016.fig_8 - EPS; ep-98-016.fig_2_b - EPS; ep-98-016.fig_2_a - EPS; ep-98-016.fig_9_a - EPS; ep-98-016.fig_9_b - EPS; ep-98-016.fig_6 - EPS; ep-98-016.fig_1_a - EPS; ep-98-016.fig_1_b - EPS; ep-98-016.fig_5 - EPS; ep-98-016.fig_7 - EPS; ep-98-016.fig_3_b - EPS; ep-98-016.fig_3_a - EPS; ep-98-016.fig_4 - EPS; - CERN library copies
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8.
(71)
Improved measurement of the $B^0_d$--$\overline{B}^0_d$ Oscillation frequency / ALEPH Collaboration
The time dependence of $B^0_d--\bar{B}^0_d$ oscillations is measured by the ALEPH experiment at LEP, using three techniques, two of which are updates of previous measurements. In all cases the charge of the decaying $b$ quark and its decay time are measured in one hemisphere of the event; the quark charge at production is tagged mainly using the opposite hemisphere [...]
CERN-PPE-96-102; CERN-OPEN-99-366.- Geneva : CERN, 1997 - 18 p. ALEPH Papers - Published in : Z. Phys. C 75 (1997) 397-407 Fulltext: open-99-366 - PDF; ppe-96-102 - PDF;
In : 28th International Conference on High-energy Physics, Warsaw, Poland, 25 - 31 Jul 1996, pp.PA05-055
28th International Conference on High-energy Physics, Warsaw, Poland, 25 - 31 Jul 1996, pp.e-proc. only - CERN library copies
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9.
(71)
Determination of $A^{b}_{FB}$ using Jet Charge Measurements in Z Decays / ALEPH Collaboration
An improved measurement of the forward-backward asymmetry in Z-> b b-bar decays is presented, based on a sample of 4.1 million hadronic Z decays collected by Aleph between 1991 and 1995. Data are a nalysed as a function of polar angle of the event axis and b purity. [...]
CERN-EP-98-038; FSU-SCRI-98-77.- Tallahassee, FL : Florida State Univ., 1998 - 13 p. ALEPH Papers - Published in : Phys. Lett. B 426 (1998) 217-230 Fulltext: PDF; - CERN library copies
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10.
(69)
A measurement of the gluon splitting rate into $b\overline{b}$ pairs in hadronic Z decays / ALEPH Collaboration
A measurement of the fraction of hadronic Z decays in which a gluon splits into a $b \bar{b}$ pair, \gbb, is presented using data collected by {\t extsc ALEPH} from 1992 to 1995 at the Z resonance. The selection is based on four-jet events. [...]
CERN-EP-98-103.- Geneva : CERN, 1998 - 15 p. ALEPH Papers - Published in : Phys. Lett. B 434 (1998) 437 Fulltext: PDF; - CERN library copies
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