scholarly journals t anti-t production cross section measurement using soft electron tagging in p anti-p collisions at √s = 1.96-TeV

2008 ◽  
Author(s):  
John Paul Chou
Keyword(s):  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Cross Section Measurement ◽  
Section Measurement

scholarly journals TOP PAIR PRODUCTION CROSS-SECTION MEASUREMENT IN THE ALL-HADRONIC CHANNEL AT CDF AND DØ

2005 ◽  
Vol 20 (14) ◽  
pp. 3183-3186 ◽  
Author(s):  
◽  
DANIEL WICKE
Keyword(s):  
Neural Network ◽  
Pair Production ◽  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Final States ◽  
Proton Antiproton ◽  
Text Production ◽  
Section Measurement ◽  
Pair Production Cross Section

Measurements of the [Formula: see text] production cross-section at [Formula: see text] in proton-antiproton collisions were performed by the CDF and DØ collaborations using [Formula: see text] final states where both W's decay hadronically. Each experiment uses luminosity of about 160 pb-1 of data collected during Run II of the Fermilab Tevatron collider. Beside kinematical observables both experiments take advantage of identifying b jets based on lifetime tagging. While CDF counts the number of b-tags over background after a cut based analysis, DØ counts the excess of events after a neural network based kinematical selection and requiring a b-tagged jet. CDF obtains [Formula: see text]; [Formula: see text].

scholarly journals Forming molecular states with hadronic rescattering

2022 ◽  
Vol 58 (1) ◽  
Author(s):  
Philip Ilten ◽  
Marius Utheim
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Production Cross ◽  
General Purpose ◽  
Event Generator ◽  
Tetraquark State ◽  
Cross Section Measurement ◽  
Section Measurement

AbstractA method for modelling the prompt production of molecular states using the hadronic rescattering framework of the general-purpose Pythia event generator is introduced. Production cross sections of possible exotic hadronic molecules via hadronic rescattering at the LHC are calculated for the $$\chi _{c1}(3872)$$ χ c 1 ( 3872 ) resonance, a possible tetraquark state, as well as three possible pentaquark states, $$P_c^+(4312)$$ P c + ( 4312 ) , $$P_c^+(4440)$$ P c + ( 4440 ) , and $$P_c^+(4457)$$ P c + ( 4457 ) . For the $$P_c^+$$ P c + states, the expected cross section from $$\Lambda _b$$ Λ b decays is compared to the hadronic-rescattering production. The $$\chi _{c1}(3872)$$ χ c 1 ( 3872 ) cross section is compared to the fiducial $$\chi _{c1}(3872)$$ χ c 1 ( 3872 ) cross-section measurement by LHCb and found to contribute at a level of $${\mathcal {O}({1\%})}$$ O ( 1 % ) . Finally, the expected yields of $$\mathrm {P_c^{+}}$$ P c + production from hadronic rescattering during Run 3 of LHCb are estimated. The prompt background is found to be significantly larger than the prompt $$\mathrm {P_c^{+}}$$ P c + signal from hadronic rescattering.

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