Top-Quark p(T) - Spectra at CMS and Flavor Independence of z - Scaling

Kód výsledku v IS VaVaI

RIV/61389005:_____/17:00489079 - isvavai.cz

Výsledek na webu

http://dx.doi.org/10.1134/S1547477117050107

DOI - Digital Object Identifier

10.1134/S1547477117050107

Jazyk výsledku

angličtina

Název v původním jazyce

Top-Quark p(T) - Spectra at CMS and Flavor Independence of z - Scaling

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Top-Quark p(T) - Spectra at CMS and Flavor Independence of z - Scaling

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

LG15052: Zkoumání mikrosvěta s využitím infrastruktury CERN

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physics of Particles and Nuclei Letters

ISSN

1547-4771

e-ISSN

—

Svazek periodika

14

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

RU - Ruská federace

Počet stran výsledku

6

Strana od-do

681-686

Kód UT WoS článku

000414317900003

EID výsledku v databázi Scopus

2-s2.0-85029179967