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CERN Document Server 67 notices trouvées  1 - 10suivantfin  aller vers la notice: La recherche a duré 1.50 secondes. 
1.
Comparison of a deterministic reaction model with an INC model for the production of nucleon in nucleon induced rection on light nuclei / Duarte, H (CEA DAM)
Among many reaction models, the intranuclear cascade (INC) calculates par- ticle production in continuum and other physical quantities for nucleon induced reaction on target nuclei. Since it is based on Monte-Carlo method, the time of computation of the INC model is rather large to get reasonable statistical error on double differential cross sections of outgoing particles in continuum for reaction on very light target nuclei. [...]
Geneva : CERN, 2015 Published version from CERN: PDF;
In : 14th International Conference on Nuclear Reaction Mechanisms, Villa Monastero, Varenna, Italy, 15 - 19 Jun 2015, pp.307
Notice détaillée
2.
Etude du méson Bs et mesure de sa durée de vie avec le détecteur ALEPH / Duarte, Helder
A partir des données de 1991 et 1992 du détecteur ALEPH au LEP, nous obtenons un signal provenant du méson Bos en étudiant ses désintégrations semi-leptoniques en un méson D-s et un lepton de signe opposé [...]
CERN-THESIS-94-012 -
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3.
Nonelastic nuclear reactions induced by light ions with the BRIEFF code / Duarte, H (CEA DAM)
The intranuclear cascade (INC) code BRIC has been extended to compute nonelastic reactions induced by light ions on target nuclei. In our approach the nucleons of the incident light ion move freely inside the mean potential of the ion in its center-of-mass frame while the center-of-mass of the ion obeys to equations of motion dependant on the mean nuclear+Coulomb potential of the target nucleus. [...]
2010 Fulltext: PDF;
In : 12th International Conference on Nuclear Reaction Mechanisms, Villa Monastero, Varenna, Italy, 15 - 19 Jun 2009, pp.355-362
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4.
Measurement of the B_s lifetime
 / Colas, P ; Coyle, P ; Duarte, H ; Roos, L
CERN-ALEPH-93-116; CERN-ALEPH-PHYSIC-93-097.- Geneva : CERN, 1993 Fulltext: PDF;
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5.
Minutes of the D* meeting held at CERN on 2 3 92
 / Duarte, H
CERN-ALEPH-92-038; CERN-ALEPH-PHYSIC-92-035.- Geneva : CERN, 1992 Fulltext: PDF;
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6.
Validation of Spallation Nuclear Models in the SPARTE Code System / Toccoli, C ; Bersillon, O ; Granier, T ; Duarte, H
1998
In : 2nd International Workshop on Nuclear Fission and Fission-Product Spectroscopy, Seyssins, France, 22 - 25 Apr 1998, pp.19-25
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7.
Measurement of the B$^{0}_{s}$ lifetime and production rate with D$^{-}_{s}$ l$^{+}$ combinations in Z decays / ALEPH Collaboration
The lifetime of the \bs meson is measured in approximately 3 million hadronic Z decays accumulated using the ALEPH detector at LEP from 1991 to 1994. Seven different \ds decay modes were reconstructed and combined with an opposite sign lepton as evidence of semileptonic \bs decays. [...]
CERN-PPE-95-125; FSU-SCRI-95-122.- Tallahassee, FL : Florida State Univ., 1995 - 15 p. ALEPH Papers - Published in : Phys. Lett. B 361 (1995) 221-233 Fulltext: PDF; - CERN library copies
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8.
A precise measurement of the average b hadron lifetime / ALEPH Collaboration
An improved measurement of the average b hadron lifetime is performed using a sample of 1.5 million hadronic Z decays, collected during the 1991-1993 runs of ALEPH, with the silicon vertex detector fully operational. This uses the three-dimensional impact parameter distribution of lepton tracks coming from semileptonic b decays and yields an average b hadron lifetime of 1.533 \pm 0.013 \pm 0.022 ps..
CERN-PPE-95-121.- Geneva : CERN, 1996 - 13 p. ALEPH Papers - Published in : Phys. Lett. B 369 (1996) 151-162 Fulltext: PDF; - CERN library copies
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9.
Production of excited beauty states in Z decays / ALEPH Collaboration
A data sample of about 3.0 million hadronic Z decays collected by the ALEPH experiment at LEP in the years 1991 through 1994, is used to make an inclusive selection of B~hadron events. In this event sample 4227 \pm 140 \pm 252 B^* mesons in the decay B^* \to B \gamma and 1944 \pm 108 \pm 161 B^{**} mesons decaying into a B~meson and a charged pion are reconstructed. [...]
CERN-PPE-95-108; FSU-SCRI-96-16.- Geneva : CERN, 1996 - 24 p. ALEPH Papers - Published in : Z. Phys. C 69 (1996) 393-404 Fulltext: PDF; - CERN library copies
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10.
Measurements of the charged particle multiplicity distribution in restricted rapidity intervals / ALEPH Collaboration
Charged particle multiplicity distributions have been measured with the ALEPH detector in restricted rapidity intervals |Y| \leq 0.5,1.0, 1.5,2.0\/ along the thrust axis and also without restriction on rapidity. The distribution for the full range can be parametrized by a log-normal distribution. [...]
CERN-PPE-95-82; FSU-SCRI-95-123.- Tallahassee, FL : Florida State Univ., 1995 - 14 p. ALEPH Papers - Published in : Z. Phys. C 69 (1995) 15-25 Fulltext: PDF; - CERN library copies
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