output
19912026
most citedPlanck 2015 results. XIII. Cosmological parameters

10.6k citations

Showing 1999 · hep-exShow all

11 papers · 2 filters

hep-ex1999★ 44 cited

Measurement of Longitudinal Spin Transfer to Lambda Hyperons in Deep-Inelastic Lepton Scattering

HERMES Collaboration, A. Airapetian

Spin transfer in deep-inelastic Lambda electroproduction has been studied with the HERMES detector using the 27.6 GeV polarized positron beam in the HERA storage ring. For an avera…

hep-ex1999★ 71 cited

Nuclear Effects on R = sigma_L / sigma_T in Deep-Inelastic Scattering

K. Ackerstaff

Cross section ratios for deep-inelastic scattering from 14N and 3He with respect to 2H have been measured by the HERMES experiment at DESY using a 27.5 GeV positron beam. The data…

hep-ex1999★ 293 cited

Observation of a Single-Spin Azimuthal Asymmetry in Semi-Inclusive Pion Electro-Production

A. Airapetian

Single-spin asymmetries for semi-inclusive pion production in deep-inelastic scattering have been measured for the first time. A significant target-spin asymmetry of the distributi…

hep-ex1999★ 102 cited

Measurement of Open Beauty Production at HERA

H1 Collaboration, C. Adloff

The first observation of open b production in ep collisions is reported. An event sample containing muons and jets has been selected which is enriched in semileptonic b quark decay…

hep-ex1999★ 13 cited

Determination of the total ccbar production cross section in 340 GeV/c Sigma- - nucleus interactions

WA89 Collaboration, M. I. Adamovich

The production of charmed particles by Sigma- of 340 Gev/c momentum was studied in the hyperon beam experiment WA89 at the CERN-SPS, using the Omega-spectrometer. In two data-takin…

hep-ex1999★ 11 cited

Production of xi resonances in sigma induced reactions at 345 GeV/c

WA89 Collaboration

We report on a measurement of the differential and total cross sections of inclusive production of Xi resonances in Sigma - nucleus collisions at 345 GeV/c.

hep-ex1999★ 137 cited

Measurement of the Spin Asymmetry in the Photoproduction of Pairs of High-pT Hadrons at HERMES

A. Airapetian

We present a measurement of the longitudinal spin asymmetry A_|| in photoproduction of pairs of hadrons with high transverse momentum p_T. Data were accumulated by the HERMES exper…

hep-ex1999★ 165 cited

Flavor Decomposition of the Polarized Quark Distributions in the Nucleon from Inclusive and Semi-inclusive Deep-inelastic Scattering

K. Ackerstaff, The HERMES Collaboration

Spin asymmetries of semi-inclusive cross sections for the production of positively and negatively charged hadrons have been measured in deep-inelastic scattering of polarized posit…

hep-ex1999★ 12 cited

Search for Supernarrow Dibaryons in pd Interactions

L. V. Fil'kov, V. L. Kashevarov, E. S. Konobeevski +3

The reaction pd-->pX at 305 MeV is studied with the aim to search for supernarrow dibaryons, the decay of which into two nucleons is forbidden by the Pauli exclusion principle. The…

hep-ex1999

The program of research at hadronic beams of ITEP accelerator. (Collection of experimental proposals)

Editors, :, V. V. Vladimirski +21

This is a collection of proposals of experiments at hadronic beams of 10 GeV accelerator, situated at the Institute of Theoretical and Experimental Physics (Moscow, Russia). The pr…

hep-ex1999★ 42 cited

Measurement of Internal Jet Structure in Dijet Production in Deep-Inelastic Scattering at HERA

C. Adloff

Internal jet structure in dijet production in deep-inelastic scattering is measured with the H1 detector at HERA. Jets with transverse energies ET,Breit > 5 GeV are selected in the…