scholarly journals First QCD analysis of charged hadron fragmentation functions and their uncertainties at next-to-next-to-leading order

2018 ◽  
Vol 98 (7) ◽  
Author(s):  
Maryam Soleymaninia ◽  
Muhammad Goharipour ◽  
Hamzeh Khanpour
Keyword(s):  
Charged Hadron ◽  
Leading Order ◽  
Fragmentation Functions ◽  
Qcd Analysis

scholarly journals Determination of the strange quark content of the nucleon from a next-to-leading-order QCD analysis of neutrino charm production

1995 ◽  
Vol 65 (2) ◽  
pp. 189-198 ◽  
Author(s):  
◽  
A. O. Bazarko ◽  
C. G. Arroyo ◽  
K. T. Bachmann ◽  
T. Bolton ◽  
...  
Keyword(s):  
Strange Quark ◽  
Charm Production ◽  
Leading Order ◽  
Qcd Analysis ◽  
Quark Content

scholarly journals General helicity formalism for two-hadron production in e+e− annihilation within a TMD approach

2021 ◽  
Vol 2021 (10) ◽  
Author(s):  
Umberto D’Alesio ◽  
Francesco Murgia ◽  
Marco Zaccheddu
Keyword(s):  
Transverse Momentum ◽  
Hadron Production ◽  
Probabilistic Interpretation ◽  
Leading Order ◽  
Transverse Momentum Dependent ◽  
Factorization Scheme ◽  
Helicity Formalism ◽  
Double Polarization ◽  
Fragmentation Functions ◽  
Polarization Observables

Abstract We present the complete leading-order results for the azimuthal dependences and polarization observables in e+e−→ h1h2 + X processes, where the two hadrons are produced almost back-to-back, within a transverse momentum dependent (TMD) factorization scheme. We consider spinless (or unpolarized) and spin-1/2 hadron production and give the full set of the corresponding quark and gluon TMD fragmentation functions (TMD-FFs). By adopting the helicity formalism, which allows for a more direct probabilistic interpretation, single- and double-polarization cases are discussed in detail. Simplified expressions, useful for phenomenological analyses, are obtained by assuming a factorized Gaussian-like dependence on intrinsic transverse momenta for the TMD-FFs.

Next-to-leading-order QCD analysis of structure functions with the help of Jacobi polynomials

1990 ◽  
Vol 48 (2) ◽  
pp. 347-353 ◽  
Author(s):  
V. G. Krivokhizhin ◽  
S. P. Kurlovich ◽  
R. Lednicky ◽  
S. Nemecek ◽  
V. V. Sanadze ◽  
...  
Keyword(s):  
Jacobi Polynomials ◽  
Structure Functions ◽  
Leading Order ◽  
Qcd Analysis

scholarly journals COMPASS Measurement of Pion and Kaon Multiplicities and Extraction of Quark Fragmentation Functions into Pions

2016 ◽  
Vol 40 ◽  
pp. 1660027
Author(s):  
Fabienne Kunne
Keyword(s):  
Inelastic Scattering ◽  
Deep Inelastic Scattering ◽  
Leading Order ◽  
Data Set ◽  
Quark Fragmentation ◽  
Z Domain ◽  
Fragmentation Functions

We present preliminary COMPASS results on pion and kaon multiplicities produced in semi inclusive deep inelastic scattering of 160[Formula: see text]GeV muons off an isoscalar ([Formula: see text]LiD) target. The results constitute an impressive data set of more than 400 points in p and 400 in K, covering a large x,Q[Formula: see text] and z domain in a fine binning, which will be used in future QCD fits at next to leading order to extract quark fragmentation functions. We show results of a first leading order fit performed to extract the favored and unfavored quark fragmentation functions into pions D[Formula: see text] and D[Formula: see text].

scholarly journals APPROXIMATE NEXT-TO-LEADING ORDER AND NEXT-TO-NEXT-TO-LEADING ORDER CORRECTIONS

2003 ◽  
Vol 18 (06) ◽  
pp. 957-966
Author(s):  
A. P. CONTOGOURIS ◽  
Z. MEREBASHVILI
Keyword(s):  
Structure Functions ◽  
Critical Examination ◽  
Leading Order ◽  
Kinematic Variable ◽  
Fragmentation Functions

For processes involving structure functions and/or fragmentation functions, arguments that over a range of a proper kinematic variable, there is a part that dominates the next-to-leading order (NLO) corrections, are briefly reviewed. The arguments are tested against more recent NLO and in particular complete next-to-next-to-leading order (NNLO) calculations. A critical examination of when these arguments may not be useful is also presented.

scholarly journals Next-to-leading order determination of fragmentation functions

2001 ◽  
Vol 19 (1) ◽  
pp. 89-98 ◽  
Author(s):  
L. Bourhis ◽  
M. Fontannaz ◽  
J.Ph. Guillet ◽  
M. Werlen
Keyword(s):  
Leading Order ◽  
Fragmentation Functions ◽  
Order Determination

scholarly journals ZEUS next-to-leading-order QCD analysis of data on deep inelastic scattering

2003 ◽  
Vol 67 (1) ◽  
Author(s):  
S. Chekanov ◽  
D. Krakauer ◽  
S. Magill ◽  
B. Musgrave ◽  
J. Repond ◽  
...  
Keyword(s):  
Inelastic Scattering ◽  
Deep Inelastic Scattering ◽  
Leading Order ◽  
Qcd Analysis

scholarly journals QCD analysis of pion fragmentation functions in the xFitter framework

2021 ◽  
Vol 104 (5) ◽  
Author(s):  
Hamed Abdolmaleki ◽  
Maryam Soleymaninia ◽  
Hamzeh Khanpour ◽  
Simone Amoroso ◽  
Francesco Giuli ◽  
...  
Keyword(s):  
Fragmentation Functions ◽  
Qcd Analysis
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