scholarly journals Measurement of the Cross Section for open b-Quark Production in Two-Photon Interactions at LEP

2008 ◽  
Vol 184 ◽  
pp. 201-203
Author(s):  
Alexander Finch
Keyword(s):  
Cross Section ◽  
Two Photon ◽  
Quark Production ◽  
The Cross ◽  
B Quark ◽  
Photon Interactions

OPEN b PRODUCTION IN TWO-PHOTON COLLISIONS IN DELPHI

2005 ◽  
Vol 20 (02n03) ◽  
pp. 661-663
Author(s):  
◽  
FRÉDÉRIC KAPUSTA
Keyword(s):  
Perturbative Qcd ◽  
Cross Section ◽  
Cross Sections ◽  
Semileptonic Decays ◽  
Two Photon ◽  
Delphi Detector ◽  
Quark Production ◽  
The Cross ◽  
First Time

Heavy b and c quark production in γγ collisions has been measured through semileptonic decays with the DELPHI detector at LEPII. The measured cross-sections are compared to NLO perturbative QCD calculations. The cross-section for b production is found to exceed QCD predictions. The K-lepton double tagging, used for the first time in γγ physics confirms this excess.

scholarly journals Measurement of the b -Quark Production Cross Section in 7 and 13 TeV pp Collisions

2017 ◽  
Vol 118 (5) ◽  
Author(s):  
R. Aaij ◽  
B. Adeva ◽  
M. Adinolfi ◽  
Z. Ajaltouni ◽  
S. Akar ◽  
...  
Keyword(s):  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Pp Collisions ◽  
Quark Production ◽  
B Quark

Discrete BFKL approach for photon–photon interactions at high energies

2020 ◽  
Vol 35 (07) ◽  
pp. 2050047
Author(s):  
Victor P. Goncalves ◽  
Cesar E. Krumreich ◽  
Werner K. Sauter
Keyword(s):  
Experimental Data ◽  
Structure Function ◽  
Cross Section ◽  
Phenomenological Study ◽  
Text Data ◽  
Two Photon ◽  
High Energies ◽  
Bfkl Approach ◽  
Free Parameters ◽  
Photon Interactions

A phenomenological study of the two-photon reaction within the discrete BFKL approach is performed. We estimate the BFKL amplitude in terms of a discrete set of eigenfunctions and use the HERA [Formula: see text] data to constrain the free parameters of the model. As a consequence, we derive a parameter free prediction of the energy dependence of the total [Formula: see text] cross-section and the Bjorken-[Formula: see text] dependence of the photon structure function. We demonstrate that the LEP data is quite well described by the discrete BFKL approach and that experimental data from the future [Formula: see text] colliders can be useful to constrain the description of the QCD dynamics at high energies.

scholarly journals BOTTOM QUARK PRODUCTION CROSS-SECTION AT HERA-B

1996 ◽  
Vol 11 (07) ◽  
pp. 587-598 ◽  
Author(s):  
N. KIDONAKIS ◽  
J. SMITH
Keyword(s):  
Perturbation Theory ◽  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Bottom Quark ◽  
Soft Gluon ◽  
Quark Production ◽  
The Cross

The cross-section for bottom quark production is calculated for the HERA-B experiment. We consider both the order [Formula: see text] cross-section and the resummation of soft gluon corrections in all orders of QCD perturbation theory.

SEARCH FOR SINGLE TOP QUARK PRODUCTION AT DØ

2006 ◽  
Vol 21 (17) ◽  
pp. 1339-1353
Author(s):  
REINHARD SCHWIENHORST
Keyword(s):  
Cross Section ◽  
Top Quark ◽  
Production Cross ◽  
Top Quarks ◽  
Event Analysis ◽  
Proton Antiproton ◽  
Single Top ◽  
Top Quark Production ◽  
Quark Production ◽  
B Quark

We present a review of searches for electroweak production of single top quarks at the Fermilab Tevatron proton–antiproton collider at [Formula: see text]. Searches for s-channel and t-channel single top quark production have been carried out using secondary-vertex b-quark tagging and advanced event analysis methods in order to maximize the sensitivity to single top quark production. So far, no evidence for a single top quark signal has been found. However, 95% confidence level upper limits on the production cross-section have been set that improve upon previous limits by factors of two to three and are approaching the cross-section region predicted by the standard model.

scholarly journals Measurement of the cross section using a soft-pion analysis in two-photon processes

1994 ◽  
Vol 328 (3-4) ◽  
pp. 535-546 ◽  
Author(s):  
R. Enomoto ◽  
K. Abe ◽  
T. Abe ◽  
I. Adachi ◽  
M. Aoki ◽  
...  
Keyword(s):  
Cross Section ◽  
Two Photon ◽  
Soft Pion ◽  
The Cross
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