scholarly journals Analytical Evaluation of the Neutrino-Nucleon Interaction Cross-Sections at Ultrahigh Energy

2014 ◽  
Vol 2014 ◽  
pp. 1-5
Author(s):  
Pijush Kanti Dhar ◽  
D. K. Choudhury
Keyword(s):  
Cross Sections ◽  
Neutral Current ◽  
Charged Current ◽  
Ultrahigh Energy ◽  
Leading Order ◽  
Analytical Evaluation ◽  
Nucleon Interaction ◽  
Parton Distributions ◽  
Interaction Cross Sections ◽  
Good Agreement

The ultrahigh energy (UHE) neutrino-nucleon interaction cross-sections are evaluated analytically in one loop by using the solutions of Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) equations. Since the genesis of the UHE neutrinos is various sources which have energy more than 105 GeV, so parton distributions are extrapolated at ultralow x to determine the charged current and the neutral current cross-sections. We then compare our analytically obtained extrapolated results with the next-to-leading order (NLO) results of various other authors. A good agreement between the two reflects the veracity of our approach of extrapolation at ultralow x.

scholarly journals Charged current Drell-Yan production at N3LO

2020 ◽  
Vol 2020 (11) ◽  
Author(s):  
Claude Duhr ◽  
Falko Dulat ◽  
Bernhard Mistlberger
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Production Cross Section ◽  
Production Cross ◽  
Hadron Collider ◽  
Charge Asymmetry ◽  
Charged Current ◽  
Leading Order ◽  
Neutrino Pair ◽  
The Impact

Abstract We present the production cross section for a lepton-neutrino pair at the Large Hadron Collider computed at next-to-next-to-next-to-leading order (N3LO) in QCD perturbation theory. We compute the partonic coefficient functions of a virtual W± boson at this order. We then use these analytic functions to study the progression of the perturbative series in different observables. In particular, we investigate the impact of the newly obtained corrections on the inclusive production cross section of W± bosons, as well as on the ratios of the production cross sections for W+, W− and/or a virtual photon. Finally, we present N3LO predictions for the charge asymmetry at the LHC.

scholarly journals ULTRAHIGH ENERGY NEUTRINO PHYSICS

2004 ◽  
Vol 19 (03) ◽  
pp. 317-340 ◽  
Author(s):  
ANNA M. STAŚTO
Keyword(s):  
Neutrino Physics ◽  
Cross Sections ◽  
High Energy ◽  
Ultrahigh Energy ◽  
Production Rates ◽  
Precise Knowledge ◽  
Detection Probabilities ◽  
Interaction Cross Sections ◽  
The Universe ◽  
Origin Of The Universe

Ultrahigh energy neutrinos can provide important information about the distant astronomical objects and the origin of the Universe. Precise knowledge about neutrino interactions and production rates is essential for estimating background, expected fluxes and detection probabilities. In this paper we review the applications of the high energy QCD to the calculations of the interaction cross-sections of the neutrinos. We also study the production of the ultrahigh energy neutrinos in the atmosphere due to the charm and beauty decays.

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.

HIGH pT JET PRODUCTION IN pp COLLISIONS

1995 ◽  
Vol 10 (20n21) ◽  
pp. 3071-3085 ◽  
Author(s):  
K.J. ESKOLA ◽  
X.-N. WANG
Keyword(s):  
Cross Sections ◽  
Leading Order ◽  
Pp Collisions ◽  
Production Rates ◽  
Parton Distributions ◽  
Jet Production ◽  
Order Calculation ◽  
Jet Cross Sections

Production rates of large pT jets inpp collisions at RHIC and LHC energies are studied using the next-to-leading order calculation of S.D. Ellis, Z. Kunszt and D. Soper. The computed inclusive one-jet cross sections are compared against the CERN and Fermilab jet data from [Formula: see text] and pp collisions. The dependence of the results on the choice of parton distributions and renormalization/factorization scales is investigated.

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

scholarly journals Next-to-leading-order study of J/ψ angular distributions in e+e− → J/ψ + ηc, χcJ at $$ \sqrt{s} $$ ≈ 10.6 GeV

2021 ◽  
Vol 2021 (9) ◽  
Author(s):  
Zhan Sun
Keyword(s):  
Cross Sections ◽  
Charm Quark ◽  
Experimental Result ◽  
Angular Distributions ◽  
Matrix Elements ◽  
Leading Order ◽  
Charm Quark Mass ◽  
Qcd Factorization ◽  
Nonrelativistic Qcd ◽  
Good Agreement

Abstract In this paper, we present a detailed next-to-leading-order (NLO) study of J/ψ angular distributions in e+e−→ J/ψ + ηc, χcJ (J = 0, 1, 2) within the nonrelativistic QCD factorization (NRQCD). The numerical NLO expressions for total and differential cross sections, i.e., $$ \frac{d\sigma}{d\cos \theta } $$ dσ d cos θ = A + B cos2θ, are both derived. With the inclusion of the newly-calculated QCD corrections to A and B, the αθ (= B/A) parameters in J/ψ + χc0 and J/ψ + χc1 are moderately enhanced, while the magnitude of αθJ/ψ+χc2 is significantly reduced; regarding the production of J/ψ + ηc, the αθ value remains unchanged. By comparing with experiment, we find the predicted αθJ/ψ+ηc is in good agreement with the Belle measurement; however, αθJ/ψ+χc0 is still totally incompatible with the experimental result, and this discrepancy seems to hardly be cured by proper choices of the charm-quark mass, the renormalization scale, and the NRQCD matrix elements.

scholarly journals Impact of Nonstandard Interactions on Neutrino-Nucleon Scattering

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
D. K. Papoulias ◽  
T. S. Kosmas
Keyword(s):  
Cross Sections ◽  
Strange Quark ◽  
Event Rate ◽  
Neutral Current ◽  
Form Factors ◽  
Nucleon Interaction ◽  
Nucleon Scattering ◽  
Neutrino Scattering ◽  
Nucleon Form Factors ◽  
Lepton Flavour

Nonstandard neutrino-nucleon interaction is formulated and explored within the energy range of quasi-elastic scattering. In particular, the study focuses on the neutral-current elastic (anti)neutrino scattering off nucleons described by the exotic reactionsνα(ν¯α)+n→νβ(ν¯β)+nandνα(ν¯α)+p→νβ(ν¯β)+p, which provide corrections to the dominant Standard Model processes. In this context, it is shown that the required exotic nucleon form factors may have a significant impact on the relevant cross sections. Besides cross sections, the event rate is expected to be rather sensitive to the magnitude of the lepton-flavour violating parameters resulting in an excess of events. The overlap of nonstandard interactions and strange quark contributions, in the region of few GeV neutrino energies, is also examined. The formalism is applied for the case of the relevant neutrino-nucleon scattering experiments (LSND, MiniBooNE, etc.) and motivates the notion that such facilities have high potential to probe NSI.

QCD ANALYSIS OF DEEP INELASTIC LEPTON-NUCLEON SCATTERING DATA

1992 ◽  
Vol 07 (25) ◽  
pp. 2307-2315
Author(s):  
S. I. BILENKAYA ◽  
D. B. STAMENOV
Keyword(s):  
Cross Section ◽  
Scale Parameter ◽  
Structure Functions ◽  
Mass Scale ◽  
Scattering Data ◽  
Nucleon Structure ◽  
Leading Order ◽  
Parton Distributions ◽  
Qcd Analysis ◽  
Good Agreement

A combined next-to-leading order QCD analysis of BCDMS µ H 2 ( D 2) and CDHS [Formula: see text] scattering data is presented. The nucleon structure functions are given in terms of parton distributions. Unlike most of the papers on this subject, the cross-section scattering data (not the values for the nucleon structure functions extracted from these data by additional extrapolations and assumptions) are fitted. A very good agreement of the data with the predictions of QCD for the parton distributions is observed. The QCD mass scale parameter Λ is determined from these data both in a flavor nonsinglet approximation and with a complete flavor singlet and non-singlet treatment. These two fits to the data give consistent results for Λ.

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