Top-Quark p(T) - Spectra at CMS and Flavor Independence of z - Scaling
Result description
We present new results of analysis of top-quark differential cross sections obtained by the CMS Collaboration in pp collisions in the framework of the z-scaling approach. The spectra are measured over a wide range of collision energy root s = 7, 8, 13 TeV and transverse momentum p(T) = 30-500 GeV/c of top-quark using leptonic and jet decay modes. Flavor independence of the scaling function psi(z) is verified in the new kinematic range. The results of analysis of the top-quark spectra obtained at the LHC are compared with similar spectra measured in (p) over barp collisions at the Tevatron energy root s = 1.96 TeV. A tendency to saturation of psi(z) for the process at low z and a power-law behavior of psi(z) at high z is observed. The measurements of high-p(T) spectra of the top-quark production at highest LHC energy is of interest for verification of self-similarity of particle production, understanding flavor origin and search for new physics symmetries with top-quark probe.
Keywords
high energyproton-proton collisionsself-similaritytop quark spectra
The result's identifiers
Result code in IS VaVaI
Result on the web
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Top-Quark p(T) - Spectra at CMS and Flavor Independence of z - Scaling
Original language description
We present new results of analysis of top-quark differential cross sections obtained by the CMS Collaboration in pp collisions in the framework of the z-scaling approach. The spectra are measured over a wide range of collision energy root s = 7, 8, 13 TeV and transverse momentum p(T) = 30-500 GeV/c of top-quark using leptonic and jet decay modes. Flavor independence of the scaling function psi(z) is verified in the new kinematic range. The results of analysis of the top-quark spectra obtained at the LHC are compared with similar spectra measured in (p) over barp collisions at the Tevatron energy root s = 1.96 TeV. A tendency to saturation of psi(z) for the process at low z and a power-law behavior of psi(z) at high z is observed. The measurements of high-p(T) spectra of the top-quark production at highest LHC energy is of interest for verification of self-similarity of particle production, understanding flavor origin and search for new physics symmetries with top-quark probe.
Czech name
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Czech description
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Classification
Type
Jimp - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Result continuities
Project
LG15052: Investigation of the Microworld using the CERN Infrastructure
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physics of Particles and Nuclei Letters
ISSN
1547-4771
e-ISSN
—
Volume of the periodical
14
Issue of the periodical within the volume
5
Country of publishing house
RU - RUSSIAN FEDERATION
Number of pages
6
Pages from-to
681-686
UT code for WoS article
000414317900003
EID of the result in the Scopus database
2-s2.0-85029179967
Basic information
Result type
Jimp - Article in a specialist periodical, which is included in the Web of Science database
OECD FORD
Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Year of implementation
2017