scholarly journals Global analysis of fragmentation functions for protons and charged hadrons

2007 ◽  
Vol 76 (7) ◽  
Author(s):  
Daniel de Florian ◽  
Rodolfo Sassot ◽  
Marco Stratmann
Keyword(s):  
Global Analysis ◽  
Charged Hadrons ◽  
Fragmentation Functions

scholarly journals SUSY-like relation of the splitting functions in evolution of gluon and quark jet multiplicities

2018 ◽  
Vol 191 ◽  
pp. 04006
Author(s):  
Anatoly Kotikov
Keyword(s):  
Evolution Equations ◽  
Dglap Evolution ◽  
Leading Order ◽  
Logarithmic Order ◽  
World Data ◽  
Charged Hadrons ◽  
Anomalous Dimensions ◽  
The World ◽  
Fragmentation Functions ◽  
Gluon Fragmentation

We show the new relationship [1] between the anomalous dimensions, resummed through next-to-next-to-leading-logarithmic order, in the Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) evolution equations for the first Mellin moments Dq,g(μ2) of the quark and gluon fragmentation functions, which correspond to the average hadron multiplicities in jets initiated by quarks and gluons, respectively. So far, such relationships have only been known from supersymmetric (SUSY) QCD. Exploiting available next-to-nextto- next-to-leading-order (NNNLO) information on the ratio D+g (μ2)=D+q (μ2) of the dominant plus components, the fit of the world data of Dq,g(μ2) for charged hadrons measured in e+e- annihilation leads to α(5)s (MZ) = 0:1205 +0:0016 -0:0020.

scholarly journals B -hadron fragmentation functions at next-to-next-to-leading order from a global analysis of e+e− annihilation data

2019 ◽  
Vol 99 (11) ◽  
Author(s):  
Maral Salajegheh ◽  
S. Mohammad Moosavi Nejad ◽  
Hamzeh Khanpour ◽  
Bernd A. Kniehl ◽  
Maryam Soleymaninia
Keyword(s):  
Global Analysis ◽  
Leading Order ◽  
Fragmentation Functions

scholarly journals DETERMINATION OF f0(980) STRUCTURE BY FRAGMENTATION FUNCTIONS

2008 ◽  
Vol 23 (27n30) ◽  
pp. 2226-2229
Author(s):  
M. HIRAI ◽  
S. KUMANO ◽  
M. OKA ◽  
K. SUDOH
Keyword(s):  
Internal Structure ◽  
Global Analysis ◽  
Second Moments ◽  
Fragmentation Functions ◽  
Exotic Hadron

We discuss internal structure of an exotic hadron by using fragmentation functions. The fragmentation functions for the f0(980) meson are obtained by a global analysis of e+ + e− → f0 + X data. Quark configuration of the f0(980) could be determined by peak positions and second moments of the obtained fragmentation functions.

scholarly journals Fragmentation functions for pions, kaons, protons and charged hadrons

2008 ◽  
Vol 110 (2) ◽  
pp. 022045 ◽  
Author(s):  
D de Florian ◽  
R Sassot ◽  
M Stratmann
Keyword(s):  
Charged Hadrons ◽  
Fragmentation Functions

scholarly journals Determination of pion and kaon fragmentation functions including spin asymmetries data in a global analysis

2013 ◽  
Vol 88 (5) ◽  
Author(s):  
M. Soleymaninia ◽  
A. N. Khorramian ◽  
S. M. Moosavi Nejad ◽  
F. Arbabifar
Keyword(s):  
Global Analysis ◽  
Spin Asymmetries ◽  
Fragmentation Functions

scholarly journals Global analysis of fragmentation functions for pions and kaons and their uncertainties

2007 ◽  
Vol 75 (11) ◽  
Author(s):  
Daniel de Florian ◽  
Rodolfo Sassot ◽  
Marco Stratmann
Keyword(s):  
Global Analysis ◽  
Fragmentation Functions

Global analysis of π± and K± fragmentation functions and their application to top quark decays considering new BABAR and Belle experimental data

2017 ◽  
Vol 95 (1) ◽  
pp. 1-8 ◽  
Author(s):  
S. Mohammad Moosavi Nejad ◽  
M. Soleymaninia ◽  
A.N. Khorramian
Keyword(s):  
Top Quark ◽  
Initial Conditions ◽  
Global Analysis ◽  
Center Of Mass ◽  
Electron Positron Annihilation ◽  
Electron Positron ◽  
Quark Decays ◽  
Fragmentation Functions ◽  
Scaled Energy ◽  
Inclusive Electron

Recently, the Belle and BABAR collaborations published the single-inclusive electron–positron annihilation data at the center of mass energies ([Formula: see text]) of 10.52 and 10.54 GeV, respectively. These new data offer one the possibility to determine the nonperturbative initial conditions of fragmentation functions (FFs) much more accurately. Here, we extract the FFs of π± and K± particles at next-to-leading order (NLO) including these new data, which are in the regions of larger scaled-energy z and lower [Formula: see text]. However, the π± and K± FFs were calculated previously, but our new analysis shows that adding these new data, for instance, changes the (u, s) → π+ FFs in the large-z region while the s → π+ FF is also changed at low z. These new data also change the u → K+ FF at low z (z < 0.2) more than at large z, but the d → K+ FF is affected at z > 0.07. The FF of g → K+ is decreased everywhere, for example, about 25% at z = 0.01. We also apply, for the first time, the extracted FFs to make our predictions for the scaled-energy distributions of π± and K± inclusively produced in top quark decays at NLO.

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