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CERN Document Server Znaleziono 10 rekordów  Szukanie trwało 0.81 sekund. 
1.
Measurement of the $Z/A$ dependence of neutrino charged-current total cross-sections ; rev. version / CHORUS Collaboration
A relative measurement of total cross-sections is reported for polyethylene, marble, iron, and lead targets for the inclusive charged-current reaction nu_mu + N -> mu^- + X. The targets, passive blocks of ~100kg each, were exposed simultaneously to the CERN SPS wide-band muon-neutrino beam over a period of 18 weeks. [...]
CERN-EP-2002-102.- Geneva : CERN, 2003 - 14 p. - Published in : Eur. Phys. J. C 30 (2003) 159-167 Fulltext: PDF; - CERN library copies
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2.
Measurement of $\Lambda_{c}^{+}$ production in neutrino charged- current interactions / Kayis-Topaksu, A ; Onengüt, G ; Van Dantzig, R ; De Jong, M ; Melzer, O ; Oldeman, R G C ; Pesen, E ; Guler, A M ; Köse, U ; Serin-Zeyrek, M et al.
A measurement of Lambda /sub c//sup +/ production in neutrino nucleon charged-current interactions is presented. in a subsample of about 50 000 interactions located in the emulsion target of the CHORUS detector, exposed to the wide band neutrino beam of the CERN SPS, candidates for decays of short-lived particles were identified using new automatic scanning systems and later confirmed through visual inspection. [...]
2003 - Published in : Phys. Lett. B 555 (2003) 156-66
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3.
Measurement of $\Lambda^{+}_{c}$ production in neutrino charged-current interactions / CHORUS Collaboration
A measurement of $\Lambda_c^+$ production in neutrino nucleon charged-current interactions is presented. In a sub-sample of about 50 000 interactions located in the emulsion target of the CHORUS detector exposed to the wide band neutrino beam of the CERN SPS, candidates for decays of short lived particles were identified using new automatic scanning systems and later confirmed through visual inspection. [...]
CERN-EP-2003-001.- Geneva : CERN, 2003 - 12 p. - Published in : Phys. Lett. B 555 (2003) 156-166 Fulltext: PDF; - CERN library copies
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4.
Determination of the semi-leptonic branching fraction of charm hadrons produced in neutrino charged-current interactions / CHORUS Collaboration
During the years 1994--1997, the emulsion target of the CHORUS detector was exposed to the CERN-SPS Wide Band Neutrino Beam. The improvements of the past few years in the automatic emulsion scanning systems allowed a sample of events located in emulsion to be used for studies of charm production. [...]
CERN-EP-2002-075.- Geneva : CERN, 2002 - 12 p. - Published in : Phys. Lett. B 549 (2002) 48-57 Fulltext: PDF; - CERN library copies
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5.
Observation of one event with the characteristics of associated charm production in neutrino charged-current interactions / CHORUS Collaboration
We report on a search for associated charm production in neutrino charged-current interactions in the CHORUS experiment, based on the visual observation of charmed-particle decays. The search differs from those carried out so far in which the production of $c \bar{c}$ has been inferred from measurements of events with two or three muons in the final state, resulting from the decay of charmed hadrons. [...]
CERN-EP-2002-036.- Geneva : CERN, 2002 - 9 p. - Published in : Phys. Lett. B 539 (2002) 188-196 Fulltext: PDF; - CERN library copies
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6.
Measurement of $D^0$ production in neutrino charged-current interactions / CHORUS Collaboration
During the years 1994--1997, the emulsion target of the CHORUS detector was exposed to the Wide Band Neutrino Beam from the CERN-SPS. About 170,000 neutrino interactions were successfully located in the emulsion. [...]
CERN-EP-2002-005.- Geneva : CERN, 2002 - 9 p. - Published in : Phys. Lett. B 527 (2002) 173-81 Fulltext: PDF; - CERN library copies
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7.
Observation of weak neutral current neutrino production of $J/\psi$ / CHORUS Collaboration
Observation of \jpsi production by neutrinos in the calorimeter of the CHORUS detector exposed to the CERN SPS wide-band \numu beam is reported. A spectrum-averaged cross-section $\sigma^{\mathrm{J/\psi}}$ = (6.3 $\pm$ 3.0) $\times \mathrm{10^{-41}~cm^{2}}$ is obtained for 20 GeV $\leq E_{\nu} \leq$ 200 GeV. [...]
CERN-EP-2000-154.- Geneva : CERN, 2001 - 15 p. - Published in : Phys. Lett. B 503 (2001) 1-9 Fulltext: PDF; - CERN library copies
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8.
New results from a search for $\nu_{\mu} \to \nu_{\tau}$ and $\nu_{e} \to \nu_{\tau}$ oscillation / CHORUS Collaboration
A first analysis of the complete set of data collected by CHORUS in the years 1994-1997 is presented. The search for $\nut$ charged current events has been performed for both leptonic and hadronic decays of the $\tauu$ lepton. [...]
CERN-EP-2000-147.- Geneva : CERN, 2001 - 12 p. - Published in : Phys. Lett. B 497 (2001) 8-22 Fulltext: PDF; - CERN library copies
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9.
Observation of neutrino induced diffractive $D_s^{*+}$ production and subsequent decay $D_s^{*+} \to D_s^+ \to \tau^+ \to \mu^+$ / CHORUS Collaboration
We report on the first direct observation of a neutrino induced charged-current interaction with two subsequent decays of short-lived particles close to the interaction vertex. This rare double- kink signature in the CHORUS emulsion target is interpreted as a $D_s^{*+}$ production followed by the decay chain $D_s^{*+} \rightarrow D_s^+ \gamma, D_s^+ \rightarrow \tau^+ \nu_\tau ,$ \linebr eak $\tau^+\rightarrow \mu^+\nu_\mu\bar{\nu_\tau}$. [...]
CERN-EP-98-087.- Geneva : CERN, 1998 - 6 p. - Published in : Phys. Lett. B 435 (1998) 458-464 Fulltext: PDF; - CERN library copies
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10.
Search for $\nu_\mu \to \nu_\tau$ oscillation using the $\tau$ decay modes into a single charged particle / CHORUS Collaboration
Part of the neutrino events collected in 1994-1995 by the CHORUS experiment has been analysed. A search was performed for $\nu_{\tau}$ charged current interactions followed by the $\tau$ lepton deca y into a single charged negative hadron, a possible indication for $\numtonut$ oscillation. [...]
CERN-EP-98-073.- Geneva : CERN, 1998 - 7 p. - Published in : Phys. Lett. B 434 (1998) 205-213 Fulltext: PDF; - CERN library copies
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