Measurement of the double differential dijet mass cross section in pp̄ collisions with √s = 1.96 TeV

2009 ◽  
Author(s):  
Mandy Rominsky
Keyword(s):  
Cross Section ◽  
Dijet Mass

scholarly journals Measurement of Z → bb̄ cross section and search for a Higgslike particle produced in association with b quarks at CDF

2018 ◽  
Vol 182 ◽  
pp. 02081
Author(s):  
Luigi Marchese
Keyword(s):  
Cross Section ◽  
Production Cross ◽  
Data Driven ◽  
Data Set ◽  
B Quarks ◽  
Dijet Mass ◽  
Hadron Decay ◽  
Upper Limits ◽  
Similar Strategy ◽  
Displaced Vertex

We present a measurement of the Z → bb̄ production cross section in pp collisions at √s = 1.96 TeV . We use a data set of 5.46 fb-1 collected by the CDF experiment at the Tevatron collider during Run II using a dedicated trigger path which required a displaced vertex compatible with a b-hadron decay. A data-driven procedure is applied to estimate the dijet mass spectrum of the non-resonant multijet background. Using a similar strategy we set one of the most stringent upper limits on the production of a Higgs-like particle in association with b quarks. We also set a limit on the inclusive SM H → bb̄.

scholarly journals JET CROSS-SECTION MEASUREMENTS IN CMS

2013 ◽  
Vol 28 (20) ◽  
pp. 1330030 ◽  
Author(s):  
SANMAY GANGULY ◽  
MONORANJAN GUCHAIT
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Mass Measurement ◽  
Hadron Collider ◽  
Center Of Mass ◽  
Order Theory ◽  
Distribution Functions ◽  
Dijet Mass ◽  
Inclusive Jet ◽  
Integrated Luminosity

The Large Hadron Collider experiment has successfully completed data taking at center-of-mass energy 7 TeV in 2011 and very recently for 8 TeV. Measurements of cross-sections predicted by the standard model were the main tasks in the beginning. The inclusive jet cross-section and dijet mass measurement are already done at 7 TeV energy by Compact Muon Solenoid (CMS) detector with integrated luminosity 5 fb-1. In these measurement, one needs to understand and measure precisely the kinematic properties of jets which involve many theoretical and experimental issues. The goal of this paper is to discuss all these issues including jet measurements in CMS and subsequently review the inclusive jet cross-section and dijet mass measurement in CMS at 7 TeV with integrated luminosity 5 fb-1. The measurements, after unfolding the data, are also compared with the next-to-leading-order theory predictions, corrected for the nonperturbative effects, for five different sets of parton distribution functions. It is observed that the measurements, for both cases, agree with the theory prediction within ~8–10% depending on transverse momentum (pT) and dijet invariant mass (Mjj) of jets.

scholarly journals Measurement of the differential dijet mass cross section inpp¯collisions ats=1.8TeV

2000 ◽  
Vol 61 (9) ◽  
Author(s):  
T. Affolder ◽  
H. Akimoto ◽  
A. Akopian ◽  
M. G. Albrow ◽  
P. Amaral ◽  
...  
Keyword(s):  
Cross Section ◽  
Dijet Mass

XUV Absorption Spectra of Carbon Ions

1988 ◽  
Vol 102 ◽  
pp. 71-73
Author(s):  
E. Jannitti ◽  
P. Nicolosi ◽  
G. Tondello
Keyword(s):  
Absorption Spectra ◽  
Cross Section ◽  
Theoretical Calculations ◽  
Photoionization Cross Section ◽  
Carbon Ions

AbstractThe photoabsorption spectra of the carbon ions have been obtained by using two laser-produced plasmas. The photoionization cross-section of the CV has been absolutely measured and the value at threshold, σ=(4.7±0.5) × 10−19cm2, as well as its behaviour at higher energies agrees quite well with the theoretical calculations.

Elastic Scattering in Electron Microscopy

1973 ◽  
Vol 31 ◽  
pp. 252-253
Author(s):  
J. Langmore ◽  
M. Isaacson ◽  
J. Wall ◽  
A. V. Crewe
Keyword(s):  
Electron Microscopy ◽  
Elastic Scattering ◽  
Cross Section ◽  
Quantum Noise ◽  
Dark Field ◽  
Elastic Cross Section ◽  
Biological Molecules ◽  
Dark Field Microscopy ◽  
Field Systems ◽  
Effects Of Radiation

High resolution dark field microscopy is becoming an important tool for the investigation of unstained and specifically stained biological molecules. Of primary consideration to the microscopist is the interpretation of image Intensities and the effects of radiation damage to the specimen. Ignoring inelastic scattering, the image intensity is directly related to the collected elastic scattering cross section, σɳ, which is the product of the total elastic cross section, σ and the eficiency of the microscope system at imaging these electrons, η. The number of potentially bond damaging events resulting from the beam exposure required to reduce the effect of quantum noise in the image to a given level is proportional to 1/η. We wish to compare η in three dark field systems.

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