Search results for "Muon"
showing 10 items of 1376 documents
Sivers asymmetry extracted in SIDIS at the hard scales of the Drell-Yan process at COMPASS
2017
Proton transverse-spin azimuthal asymmetries are extracted from the COMPASS 2010 semi-inclusive hadron measurements in deep inelastic muon-nucleon scattering in those four regions of the photon virtuality $Q^2$, which correspond to the four regions of the di-muon mass $\sqrt{Q^2}$ used in the ongoing analysis of the COMPASS Drell-Yan measurements. This allows for a future direct comparison of the nucleon transverse-momentum-dependent parton distribution functions extracted from these two alternative measurements. Various two-dimensional kinematic dependences are presented for the azimuthal asymmetries induced by the Sivers transverse-momentum-dependent parton distribution function. The inte…
Drift Time Measurement in the ATLAS Liquid Argon Electromagnetic Calorimeter using Cosmic Muons
2010
The ionization signals in the liquid argon of the ATLAS electromagnetic calorimeter are studied in detail using cosmic muons. In particular, the drift time of the ionization electrons is measured and used to assess the intrinsic uniformity of the calorimeter gaps and estimate its impact on the constant term of the energy resolution. The drift times of electrons in the cells of the second layer of the calorimeter are uniform at the level of 1.3% in the barrel and 2.8% in the endcaps. This leads to an estimated contribution to the constant term of (0.29-0.04+0.05)% in the barrel and (0.54-0.04+0.06)% in the endcaps. The same data are used to measure the drift velocity of ionization electrons …
"Table 4" of "Single intermediate vector boson production in e+ e- collisions at s**(1/2) = 183-GeV and 189-GeV."
2000
Cross sections for single-Z0 production in the leptonic channel.
"Table 2" of "Measurement of W pair production in e+ e- collisions at centre-of-mass energies from 183-GeV to 209-GeV."
2004
The measured cross section for the E NU MU NU final state. The DSYS error is the typical systematic error.
"Table 1" of "Single intermediate vector boson production in e+ e- collisions at s**(1/2) = 183-GeV and 189-GeV."
2000
Cross sections for single-W production in the (E- NUEBAR Q QBAR + CC) and (E- NUEBAR LEPTON LEPTONBAR) + CC) channels.
"Table 2" of "Study of the muon pair production at center-of-mass energies from 20-GeV to 136-GeV with the ALEPH detector"
1997
Inclusive analysis from evvents with no specific selection of hard ISR.
"Table 1" of "Study of the muon pair production at center-of-mass energies from 20-GeV to 136-GeV with the ALEPH detector"
1997
Exlclusive analysis from events with hard ISR.
"Table 13" of "Measurements of the line shape of the Z0 and determination of electroweak parameters from its hadronic and leptonic decays"
1994
MU+ MU- cross sections from the 1991 data set corrected to 4pi acceptance.
"Table 11" of "Measurements of the line shape of the Z0 and determination of electroweak parameters from its hadronic and leptonic decays"
1994
MU+ MU- cross sections from the 1990 data set, for 4pi detection (corrected for the cuts on momenta and accollinearity). Additional systematic uncertainty, excluding luminosity, is 0.8 pct.
"Table 3" of "Update of electroweak parameters from Z decays"
1993
Data from 1990 running period.