αs from scaling violations in fragmentation functions

2001 ◽  
Vol 96 (1-3) ◽  
pp. 89-93
Author(s):  
B.A. Kniehl ◽  
G. Kramer ◽  
B. Pötter
Keyword(s):  
Fragmentation Functions ◽  
Scaling Violations

Extracting αs from scaling violations in light-hadron fragmentation functions

2016 ◽  
Vol 31 (08) ◽  
pp. 1630008
Author(s):  
Bernd A. Kniehl
Keyword(s):  
Experimental Data ◽  
Strong Coupling ◽  
Inclusive Production ◽  
Coupling Constant ◽  
High Luminosity ◽  
Light Hadron ◽  
The Status ◽  
Fragmentation Functions ◽  
Quark Jets ◽  
Scaling Violations

We review the status of extracting the strong-coupling constant [Formula: see text] from the scaling violations in fragmentation functions (FFs) by fitting the latter to experimental data of the inclusive production of single light hadrons in [Formula: see text] annihilation. We also discuss the analogous analysis based on the average hadron multiplicities in gluon and quark jets, which correspond to the first Mellin moments of the respective FFs. We then assess the prospects of such [Formula: see text] determinations at future high-luminosity [Formula: see text] colliders such as the CERN Future Circular Collider operated in the [Formula: see text] annihilation mode (FCC-ee).

scholarly journals Measurement of αs from scaling violations in fragmentation functions in e+e− annihilation

1995 ◽  
Vol 357 (3) ◽  
pp. 487-499 ◽  
Author(s):  
D Buskulic ◽  
D Casper ◽  
I De Bonis ◽  
D Decamp ◽  
P Ghez ◽  
...  
Keyword(s):  
Fragmentation Functions ◽  
Scaling Violations

scholarly journals Charged Particles Multiplicity and Scaling Violation of Fragmentation Functions in Electron-Positron Annihilation

2016 ◽  
Vol 2016 ◽  
pp. 1-8
Author(s):  
Tooraj Ghaffary
Keyword(s):  
Center Of Mass ◽  
Charged Particles ◽  
Splitting Function ◽  
Annihilation Process ◽  
Center Of Mass Energy ◽  
Electron Positron Annihilation ◽  
Electron Positron ◽  
Momentum Spectra ◽  
Fragmentation Functions ◽  
Scaling Violations

By the use of data from the annihilation process of electron-positron in AMY detector at 60 GeV center of mass energy, charged particles multiplicity distribution is obtained and fitted with the KNO scaling. Then, momentum spectra of charged particles and momentum distribution with respect to the jet axis are obtained, and the results are compared to the different models of QCD; also, the distribution of fragmentation functions and scaling violations are studied. It is being expected that the scaling violations of the fragmentation functions of gluon jets are stronger than the quark ones. One of the reasons for such case is that splitting function of quarks is larger than splitting function of gluon.

scholarly journals Probing quark fragmentation functions for baryon production in unpolarized e+e− annihilation

1995 ◽  
Vol 445 (2-3) ◽  
pp. 380-396 ◽  
Author(s):  
Kun Chen ◽  
Gary R. Goldstein ◽  
R.L. Jaffe ◽  
Xiangdong Ji
Keyword(s):  
Baryon Production ◽  
Quark Fragmentation ◽  
Fragmentation Functions
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