output
19922026
most citedMeasurements of Omega and Lambda from 42 High-Redshift Supernovae

18.1k citations

Showing 1997Show all

19 papers · 1 filter

hep-ph1997★ 1 cited

Exclusive photoproduction of on Proton in the quark-diquark model

C. Carimalo, N. Arteaga-Romero, S. Ong

We present predictions for the exclusive photoproduction of -meson on Proton at large tranfer, where we use a quark-diquark structure model for the proton. Extrapolation from ou…

astro-ph1997★ 2.5k cited

Discovery of a Supernova Explosion at Half the Age of the Universe and its Cosmological Implications

S. Perlmutter, G. Aldering, M. Della Valle +20

The ultimate fate of the universe, infinite expansion or a big crunch, can be determined by measuring the redshifts, apparent brightnesses, and intrinsic luminosities of very dista…

hep-ex1997★ 17 cited

DIRC, the Internally Reflecting Ring Imaging Cherenkov Detector for BABAR

DIRC Collaboration

The DIRC is a new type of Cherenkov imaging device that will be used for the first time in the BABAR detector at the asymmetric B-factory, PEP-II. It is based on total internal ref…

hep-ex1997★ 30 cited

Photo-production of psi' Mesons at HERA

C. Adloff

Quasi-elastic (z >0.95) photo-production of psi' mesons has been observed at HERA for photon-proton centre-of-mass energies in the range 40 to 160 GeV. The psi' mesons were identif…

hep-ex1997★ 24 cited

Updated measurement of the tau lepton lifetime

The ALEPH Collaboration

A new measurement of the mean lifetime of the tau lepton is presented. Three different analysis methods are applied to a sample of 90000 tau pairs, collected in 1993 and 1994 with…

astro-ph1997

Very high energy gamma rays from Markarian 501

R. J. Protheroe, C. L. Bhat, P. Fleury +3

During remarkable flaring activity in 1997 Markarian 501 was the brightest source in the sky at TeV energies, outshining the Crab Nebula by a factor of up to 10. Periods of flaring…

hep-ex1997★ 21 cited

Searches for Supersymmetry in the photon(s) plus missing energy channels at = 161 GeV and 172 GeV

ALEPH Collaboration

Searches for supersymmetric particles in channels with one or more photons and missing energy have been performed with data collected by the ALEPH detector at LEP. The data consist…

hep-ex1997★ 24 cited

Low Q^2 Jet Production at HERA and Virtual Photon Structure

C. Adloff

The transition between photoproduction and deep-inelastic scattering is investigated in jet production at the HERA ep collider, using data collected by the H1 experiment. Measureme…

hep-ex1997★ 26 cited

Evolution of ep Fragmentation and Multiplicity Distributions in the Breit Frame

C. Adloff

Low x deep-inelastic ep scattering data, taken in 1994 at the H1 detector at HERA, are analysed in the Breit frame of reference. The evolution of the peak and width of the current…

hep-ex1997★ 23 cited

Searches for Scalar Top and Scalar Bottom Quarks at LEP2

The ALEPH Collaboration

Searches for scalar top and bottom quarks have been performed with data collected by the ALEPH detector at LEP. The data sample consists of 21.7 pb^-1 taken at sqrt{s} = 161, 170,…

hep-ph1997

Isospin constraints on the decay mode

Andre Rouge

The construction of the complete isospin relations and inequalities between the possible charge configurations of a decay mode is presented. Detailed applications…

hep-ex1997

H1 Results in Deep Inelastic Scattering

Gregorio Bernardi

Recent deep inelastic results from the H1 collaboration are presented. The topics covered include inclusive diffractive physics, the determination of alpha_S using the event shapes…

hep-ph1997★ 38 cited

New results in rho^0 meson physics

M. Benayoun, S. Eidelman, K. Maltman +3

We compare the predictions of a range of existing models based on the Vector Meson Dominance hypothesis with data on e^+ e^- -> pi^+ pi^$ and e^+ e^- -> mu^+ mu^- cross-sections an…

hep-ex1997★ 11 cited

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…

hep-ex1997★ 48 cited

Measurement of Event Shape Variables in Deep Inelastic e^+ Scattering

C. Adloff

Deep inelastic e^+ scattering data, taken with the H1 detector at HERA, are used to study the event shape variables thrust, jet broadening and jet mass in the current hemisphere of…

astro-ph1997

Detection of Vhe Gamma-Rays from MRK 501 with the Cat Imaging Telescope

A. Barrau, R. Bazer-Bachi, H. Cabot +33

The CAT imaging telescope on the site on the former solar plant Themis has been observing gamma-rays from Mrk501 above 220 GeV in March and April 1997. This source is shown to be h…

astro-ph1997

Observation of the Crab Nebula Gamma-Ray Emission Above 220 Gev by the Cat Cherenkov Imaging Telescope

A. Barrau, R. Bazer-Bachi, H. Cabot +33

The CAT imaging telescope, recently built on the site of the former solar plant Themis (French Pyrenees), observed gamma-rays from the Crab nebula from October 1996 to March 1997.…

astro-ph1997

The CAT Imaging Telescope

A. Barrau, R. Bazer-Bachi, H. Cabot +33

The VHE gamma-ray imaging telescope CAT started taking data in October 1996. Located at the Themis solar site in southern France, it features a 17.7 m^2 Davies-Cotton mirror equipp…

hep-ex1997★ 119 cited

A Measurement of the Proton Structure Function F_2(x,Q^2) at Low x and Low Q^2 at HERA

C. Adloff

The results of a measurement of the proton structure function F_2(x,Q^2)and the virtual photon-proton cross section are reported for momentum transfers squared Q^2 between 0.35 GeV…