scholarly journals Leptoproduction of heavy quarks. I. General formalism and kinematics of charged current and neutral current production processes

1994 ◽  
Vol 50 (5) ◽  
pp. 3085-3101 ◽  
Author(s):  
M. A. G. Aivazis ◽  
Fredrick I. Olness ◽  
Wu-Ki Tung
Keyword(s):  
Neutral Current ◽  
Heavy Quarks ◽  
Charged Current ◽  
Production Processes ◽  
Current Production

scholarly journals Search for long-lived heavy neutrinos at the LHC with a VBF trigger

2020 ◽  
Vol 80 (7) ◽  
Author(s):  
J. Jones-Pérez ◽  
J. Masias ◽  
J. D. Ruiz-Álvarez
Keyword(s):  
Minimal Model ◽  
Charged Lepton ◽  
Neutral Current ◽  
Vector Boson ◽  
Charged Current ◽  
Heavy Neutrino ◽  
Extended Model ◽  
Type I ◽  
Scale Type ◽  
Current Production

Abstract The charged current production of long-lived heavy neutrinos at the LHC can use a prompt charged lepton for triggering the measurement of the process. However, in order to fully characterize the heavy neutrino interactions, it is necessary to also probe Higgs or Z mediated neutral current production. In this case the charged lepton is not available, so other means of triggering are required. In this work, we explore the possibility of using a vector boson fusion trigger in the context of a GeV-scale Type I Seesaw model. We consider a minimal model, where both Higgs and Z-mediated contributions produce one heavy neutrino, as well as an extended model where the Higgs can decay into two heavy ones. Both scenarios are tested through displaced dilepton and displaced multitrack jet searches.

Single particle inclusive leptoproduction in quantum chromodynamics

1982 ◽  
Vol 60 (7) ◽  
pp. 939-949 ◽  
Author(s):  
Bruce A. Campbell
Keyword(s):  
Quantum Chromodynamics ◽  
Single Particle ◽  
Particle Production ◽  
Neutral Current ◽  
Asymptotic Freedom ◽  
Charged Current ◽  
Leading Order ◽  
Production Processes ◽  
Scaling Violations

The effects of scaling violations in current induced single particle inclusive lepto-production reactions is examined in the framework of asymptotic freedom. A set of quark fragmention functions is introduced which approximately satisfies the leading order asymptotic freedom constraints of quantum chromodynamics. These are then used to give a consistent leading order treatment of current induced single particle production processes, in particular: e+e− annihilation, charged current neutrino (antineutrino) reactions, electro (muo) production, and neutral current neutrino reactions. We emphasize the consistency of the different reactions with an asymptotically free parton picture.

scholarly journals Coherent and incoherent channels of neutrino-nucleus reactions

2020 ◽  
Vol 16 ◽  
pp. 75
Author(s):  
P. C. Divari ◽  
T. S. Kosmas
Keyword(s):  
Cross Sections ◽  
Neutral Current ◽  
Charged Current ◽  
Preliminary Results ◽  
Scattering Cross ◽  
Neutrino Detection ◽  
Intermediate Energies ◽  
Nucleus Scattering ◽  
Scattering Cross Sections

Inelastic neutrino-nucleus scattering cross sections at low and intermediate energies are investigated for currently interesting nuclei employed in neutrino-detection experiments. This is an extension to charged current processes of our previous QRPA calculations referred to neutral current neutrino/antineutrino-nucleus reactions. Our preliminary results for the reactions 56Fe(νe, e−)56Co and 40Ar(νe, e−)40K compare rather well with similar calculations obtained in the context of continuum RPA.

RESULTS FROM THE PURE D2O PHASE OF THE SUDBURY NEUTRINO OBSERVATORY

2003 ◽  
Vol 18 (22) ◽  
pp. 3789-3807
Author(s):  
◽  
F. A. DUNCAN
Keyword(s):  
Neutral Current ◽  
Solar Neutrinos ◽  
Total Flux ◽  
Sudbury Neutrino Observatory ◽  
Charged Current ◽  
Mixing Angle ◽  
Cerenkov Detector ◽  
Neutrino Spectrum ◽  
Oscillation Analysis ◽  
Current Interaction

The Sudbury Neutrino Observatory is a 1000 T D2O Cerenkov detector that is sensitive to 8 B and hep solar neutrinos. Both Charged Current and Neutral Current interaction rates on deuterons as well as the Elastic Scattering interaction rate on electrons can be measured simultaneously. Assuming an undistorted 8 B neutrino spectrum, the total flux measured with the NC reaction is [Formula: see text], which is consistent with solar models. The νe component of the 8 B solar flux is [Formula: see text] for a kinetic energy threshold of 5 MeV. The non-νe component is [Formula: see text], which is 5.3σ greater than zero, giving strong evidence for solar νe flavor transformation. The Day-Night Asymmetry for the Charged Current interaction is [Formula: see text]. If the total flux of active neutrinos is additionally constrained to have no asymmetry, the νe asymmetry is found to be [Formula: see text]. Combined with other solar neutrino data, a global MSW oscillation analysis strongly favors the Large Mixing Angle (LMA) solution.

Ratio of Neutral-Current to Charged-Current Cross Sections for Inclusive Neutrino Interactions in Hydrogen

1977 ◽  
Vol 39 (8) ◽  
pp. 437-440 ◽  
Author(s):  
F. A. Harris ◽  
J. P. Berge ◽  
D. V. Bogert ◽  
R. J. Cence ◽  
T. C. Coffin ◽  
...  
Keyword(s):  
Cross Sections ◽  
Neutral Current ◽  
Charged Current ◽  
Neutrino Interactions

τ LEPTON PHYSICS

1998 ◽  
Vol 13 (05) ◽  
pp. 695-739 ◽  
Author(s):  
GHITA RAHAL-CALLOT
Keyword(s):  
Neutral Current ◽  
Branching Fractions ◽  
New Physics ◽  
Precise Determination ◽  
Energy Scale ◽  
Hadronic Decay ◽  
Charged Current ◽  
Beyond The Standard Model ◽  
Decay Channels

General properties of the τ leptons are reviewed using the recent measurements of production and decay of τ leptons. The improvements in the knowledge of the τ mass and the limits on ντ mass are reported. New improved measurements of the τ polarization and asymmetries performed at LEP and SLC prove a measurement of the axial and vector part of the neutral current at the per mil level. For the leptonic charged current, no deviation from the V–A Lorentz structure of the current is observed. Improvements on the lifetime and leptonic branching fractions allow a check of the charged current universality at the 0.5% level. New hadronic decay channels have been measured, mainly those involving kaons and η mesons. A precise determination of αs at the τ mass energy scale is performed. Finally, tests of possible new physics beyond the Standard Model are discussed.

Measurement of the neutral-current-to-charged-current cross-section ratio for antineutrino-proton inclusive scattering

1982 ◽  
Vol 26 (11) ◽  
pp. 2965-2972 ◽  
Author(s):  
D. D. Carmony ◽  
T. S. Carman ◽  
V. E. Barnes ◽  
C. Davis ◽  
E. Fernandez ◽  
...  
Keyword(s):  
Cross Section ◽  
Neutral Current ◽  
Charged Current ◽  
Cross Section Ratio ◽  
Section Ratio ◽  
Inclusive Scattering
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