Scientific Commons: Pierre Astier

Supernova Shock Breakout from a Red Supergiant (2008)

Schawinski, Kevin, Justham, Stephen, Wolf, Christian, Podsiadlowski, Philipp, Sullivan, Mark, Steenbrugge, Katrien C., ...

Massive stars undergo a violent death when the supply of nuclear fuel in their cores is exhausted, resulting in a catastrophic "core-collapse" supernova. Such events are usually only detected at...

Supernova shock breakout from a red supergiant (2008)

Schawinski, Kevin, Justham, Stephen, Wolf, Christian, Podsiadlowski, Philipp, Sullivan, Mark, Steenbrugge, Katrien C., ...

Massive stars undergo a violent death when the supply of nuclear fuel in their cores is exhausted, resulting in a catastrophic ``core-collapse'' supernova. Such events are usually only detected at...

Search for the exotic $\Theta^+$ resonance in the NOMAD experiment (2006)

Samoylov, O, Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, M, Banner, M, ...

A search for exotic Theta baryon via Theta -> proton +Ks decay mode in the NOMAD muon neutrino DIS data is reported. The special background generation procedure was developed. The proton...

Toward a cosmological Hubble diagram for Type II-P supernovae (2006)

Nugent, Peter, Sullivan, Mark, Ellis, Richard, Gal-Yam, Avishay, Leonard, Douglas C., Howell, D. Andrew, ...

We present the first high-redshift Hubble diagram for Type II-P supernovae (SNe II-P) based on five events at redshift up to z ~ 0.3. This diagram was constructed using photometry from the...

Production properties of K*(892) vector mesons and their spin alignment as measured in the NOMAD experiment (2006)

Chukanov, A, Naumov, D, Popov, B, Astier, Pierre, Autiero, D, Baldisseri, Alberto, ...

First measurements of K*(892) mesons production properties and their spin alignment in nu_mu charged current (CC) and neutral current (NC) interactions are presented. The analysis of the full data...

Towards a Cosmological Hubble Diagram for Type II-P Supernovae (2006)

Nugent, Peter, Sullivan, Mark, Ellis, Richard, Gal-Yam, Avishay, Leonard, Douglas C., Howell, D. Andrew, ...

We present the first high-redshift Hubble diagram for Type II-P supernovae (SNe II-P) based upon five events at redshift up toz~;0.3. This diagram was constructed using photometry from the...

A Study of Strange Particles Produced in Neutrino Neutral Current Interactions in the NOMAD Experiment (2004)

Naumov, D V, Chukanov, A, Naumova, E, Popov, B, Astier, Pierre, Autiero, D, ...

Results of a detailed study of strange particle production in neutrino neutral current interactions are presented using the data from the NOMAD experiment. Integral yields of neutral strange...

Bose-Einstein Correlations in Charged Current Muon-Neutrino Interactions in the NOMAD Experiment at CERN (2004)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Banner, M, Bassompierre, Gabriel, ...

Bose-Einstein Correlations in one and two dimensions have been studied, with high statistics, in charged current muon-neutrino interaction events collected with the NOMAD detector at CERN. In one...

Search for $\nu_{\mu} \to \nu_{e}$ oscillations in the NOMAD experiment (2003)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Banner, M, Bassompierre, Gabriel, ...

We present the results of a search for nu_mu → nu_e oscillations in the NOMAD experiment at Cern. The experiment looked for the appearance of nu_e in a predominantly nu_mu wide-band neutrino...

Search for $\nu\mu \to \nu_{e}$ Oscillations in the NOMAD Experiment (2003)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Banner, M, Bassompierre, Gabriel, ...

We present the results of a search for nu(mu)-->nu(e) oscillations in the NOMAD experiment at CERN. The experiment looked for the appearance of nu(e) in a predominantly nu(mu) wide-band neutrino beam...

Prediction of Neutrino Fluxes in the NOMAD Experiment (2003)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Banner, M, Bassompierre, Gabriel, ...

The method developed for the calculation of the flux and composition of the West Area Neutrino Beam used by NOMAD in its search for neutrino oscillations is described. The calculation is based on...

Overview of the nearby supernova factory (2002)

Aldering, Greg, Adam, Gilles, Antilogus, Pierre, Astier, Pierre, Bacon, Roland, Bongard, S., ...

Study of $D^{*+}$ production in $\nu_{\mu}$ charged current interactions in the NOMAD experiment (2001)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Banner, M, Bassompierre, Gabriel, ...

A search was made among $\nu_\mu$ charged current events collected in the NOMAD experiment for the reaction: $\nu_\mu + N \rightarrow \mu^- + D^{\star+} + hadrons \hookrightarrow D^0 + \pi^+...

A Study of Strange Particle Production in Muon Neutrino Charged Current Interactions in the NOMAD Experiment (2001)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Banner, M, Bassompierre, G, ...

A study of strange particle production in muon neutrino charged current interactions has been performed using the data from the NOMAD experiment. Yields of neutral strange particles K0s, Lambda,...

A study of strange particle production in $\nu_\mu$ charged current interactions in the NOMAD experiment (2001)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Banner, M, Bassompierre, Gabriel, ...

A study of strange particle production in $\nu_\mu$ charged current interactions has been performed using the data from the NOMAD experiment. Yields of neutral strange particles ($\ko$, $\lam$,...

Final NOMAD results on $\nu_{\mu} \to \nu_{\tau}$ and $\nu_{e} \to \nu_{\tau}$ oscillations including a new search for $\nu_{\tau}$ appearance using hadronic $\tau$ decays (2001)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Banner, M, Bassompierre, Gabriel, ...

Results from the nu_tau appearance search in a neutrino beam using the full NOMAD data sample are reported. A new analysis unifies all the hadronic tau decays, significantly improving the overall...

A study of backward going $p$ and $\pi^{-}$ in $\nu_{\mu}CC$ interactions with the NOMAD detector (2001)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Banner, M, Bassompierre, Gabriel, ...

Backward proton and $\pi^-$ production has been studied in \numucc interactions with carbon nuclei. Detailed analyses of the momentum distributions, of the production rates, and of the general...

Inclusive production of $\rho^{0}(770), f_0(980)$ and $f_2(1270)$ mesons in $\nu_{\mu}$ charged current interactions (2001)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Banner, M, Bassompierre, Gabriel, ...

The inclusive production of the meson resonances $\rho^{0}(770)$, $f_0(980)$ and $f_2(1270)$ in neutrino-nucleus charged current interactions has been studied with the NOMAD detector exposed to the...

Measurement of the $\overline{\Lambda}$ polarization in $\nu_\mu$ charged current interactions in the NOMAD experiment (2001)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Banner, M, Bassompierre, Gabriel, ...

We present a measurement of the polarization of $\alam$ hyperons produced in $\nu_\mu$ charged current interactions. The full data sample from the NOMAD experiment has been analyzed using the same...

The Drift Chambers Of The Nomad Experiment (2001)

Anfreville, M G, Astier, Pierre, Authier, M, Baldisseri, Alberto, Banner, M, Besson, N, ...

We present a detailed description of the drift chambers used as an active target and a tracking device in the NOMAD experiment at CERN. The main characteristics of these chambers are a large area, a...

Search for heavy neutrinos mixing with $\tau$ neutrinos (2001)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Banner, M, Bassompierre, Gabriel, ...

We report on a search for heavy neutrinos ($\nus$) produced in the decay $D_s\to \tau \nus$ at the SPS proton target followed by the decay $\nudecay$ in the NOMAD detector.\ Both decays are expected...

Measurement of the $\Lambda$ polarization in $\nu_\mu$ charged current interactions in the NOMAD experiment (2000)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Banner, M, Bassompierre, Gabriel, ...

The $\Lambda$ polarization in $\nu_\mu$ charged current interactions has been measured in the NOMAD experiment. The event sample (8087 reconstructed $\Lambda$'s) is more than an order of magnitude...

Can luminosity distance measurements probe the equation of state of dark energy (2000)

Astier, Pierre

Distance measurements to Type Ia supernovae (SNe Ia) at cosmological distances indicate that the Universe is accelerating and that a large fraction of the critical energy density exists in a...

Neutrino production of opposite sign dimuons in the NOMAD experiment (2000)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Ballocchi, G, Banner, M, ...

The NOMAD Collaboration presents a study of opposite sign dimuon events in the framework of Leading Order QCD. A total of 2714 neutrino- and 115 antineutrino-induced opposite sign dimuon events with...

Updated Results from the $\nu_{\tau}$ Appearance Search in NOMAD (2000)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Ballocchi, G, Banner, M, ...

Updated results from the appearance searches for $\numunutau$ and $\nuenutau$ oscillations in the full NOMAD data sample are reported. The increased data and the use of more refined kinematic schemes...

Search for eV (pseudo)scalar penetrating particles in the SPS neutrino beam (2000)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Ballocchi, G, Banner, M, ...

We carried out a model-independent search for light scalar or pseudoscalar particles $a$'s (an example of which is the axion) that couple to two photons by using a photon-regeneration method at high...

Kalman Filter Track Fits and Track Breakpoint Analysis (1999)

Astier, Pierre, Cardini, A, Cousins, R D, Letessier-Selvon, A A, Popov, B A, Vinogradova, T G

We give an overview of track fitting using the Kalman filter method in the NOMAD detector at CERN, and emphasize how the wealth of by-product information can be used to analyze track breakpoints...

Limit on $\nu_{e} \to \nu_{\tau}$ Oscillations from the NOMAD experiment (1999)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Ballocchi, G, Banner, M, ...

A More Sensitive Search for $\nu_{\mu} \to \nu_{\tau}$ Oscillations in NOMAD (1999)

Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Ballocchi, G, Banner, M, ...

With additional data and improved algorithms, we have enhanced the sensitivity of our appearance search for $\numunutau$ oscillations in the NOMAD detector in the CERN-SPS wide-band neutrino beam....

Precision Measurement of Scaled Momentum, Charge Multiplicity and Thrust in $\nu_{\mu}N$ and $\overline\nu_{\mu}N$ Interactions (1998)

Altegoer, J, Angelini, C, Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, ...

We report the first precision measurements of the scaledmomentum, the charge multiplicity, and the thrust of hadronic jets inthe Breit frame in Deep Inelastic Scattering \nun\ and\nunbar\ charged...

A search for $\nu_{\mu} \rightarrow \nu_{\tau}$ oscillations using the NOMAD detector (1998)

Altegoer, J, Angelini, C, Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, ...

NOMAD is a neutrino oscillation experiment designed to search for $\nu_\tau$ appearance in the CERN-SPS wide band $\nu_\mu$ beam. Signal detection relies on the identification of $\nu_\tau$ charge d...

Search for a new gauge boson in $\pi^{0}$ decays (1998)

Altegoer, J, Astier, Pierre, Autiero, D, Baldisseri, Alberto, Baldo-Ceolin, Massimilla, Ballocchi, G, ...

A search was made for a new light gauge boson $X$ which might be produced in $\pi^{0}\rightarrow\gamma + X$ decay from neutral pions generated by 450-GeV protons in the CERN SPS neutrino target. Th e...

The NOMAD experiment at the CERN SPS (1997)

Altegoer, J, Anfreville, M G, Angelini, C, Astier, Pierre, Authier, M, Autiero, D, ...

The NOMAD experiment is a short base-line search for $\nu_{\mu}\rightarrow \nu_{\tau}$ oscillations in the CERN neutrino beam. The $\nu_{\tau}$'s are searched for through their charged-current...

Determination of $\alpha_{s}$ in second order QCD in hadronic Z decays (1992)

Abreu, P, Adam, W, Adami, F, Adye, T, Åkesson, T, Alekseev, G D, ...

Multiplicity dependence of mean transverse momentum in e+e- annihilations at LEP energies (1991)

Abreu, P, Adam, W, Adami, F, Adye, T, Åkesson, T, Alekseev, G D, ...

Searches for heavy neutrinos from Z decays (1991)

Abreu, P, Adam, W, Adami, F, Adye, T, Åkesson, T, Alekseev, G D, ...

Study of final state photons in hadronic Z0 decay and limits on new phenomena (1991)

Abreu, P, Adam, W, Adami, F, Adye, T, Åkesson, T, Alekseev, G D, ...

Search for scalar leptoquarks from Z0 decays (1991)

Abreu, P, Adam, W, Adami, F, Adye, T, Åkesson, T, Alekseev, G D, ...

Measurement of the average lifetime of B hadrons (1991)

Abreu, P, Adam, W, Adami, F, Adye, T, Åkesson, T, Alekseev, G D, ...