scholarly journals Upper limits for the photoproduction cross section for theΦ−−(1860)pentaquark state off the deuteron

2012 ◽  
Vol 85 (1) ◽  
Author(s):  
H. Egiyan ◽  
J. Langheinrich ◽  
R. W. Gothe ◽  
L. Graham ◽  
M. Holtrop ◽  
...  
Keyword(s):  
Cross Section ◽  
Photoproduction Cross Section ◽  
Upper Limits

scholarly journals NUMERICAL STUDY OF RADIATIVE CORRECTIONS IN THE LOW Q2 REGION AT HERA

1994 ◽  
Vol 09 (18) ◽  
pp. 3229-3244
Author(s):  
K. CHARCHULA ◽  
J. GAJEWSKI
Keyword(s):  
Cross Section ◽  
Numerical Study ◽  
Radiative Corrections ◽  
Hadronic Final State ◽  
Radiative Effects ◽  
Final State ◽  
Cross Section Measurement ◽  
Photoproduction Cross Section ◽  
Section Measurement

A detailed numerical study of radiative corrections in the low Q2 region at the HERA ep collider was performed. The specific case of the total photoproduction cross section measurement was taken as an example. Two different programs, TERAD91 and HER-ACLES4.2, were used to get an estimate of the size of radiative effects. It was found that radiative corrections can be quite large at some points of the space of leptonic (x, y) variables. However, after imposing experimentally feasible cuts on the radiated photon and the hadronic final state one gets corrections at the level of a few per cent.

scholarly journals INTERPRETING THE BOUNDS ON SOLAR DARK MATTER INDUCED MUONS AT SUPER-KAMIOKANDE IN THE LIGHT OF CDMS RESULTS

2010 ◽  
Vol 25 (18n19) ◽  
pp. 3741-3747
Author(s):  
ABHIJIT BANDYOPADHYAY ◽  
SOVAN CHAKRABORTY ◽  
DEBASISH MAJUMDAR
Keyword(s):  
Dark Matter ◽  
Elastic Scattering ◽  
Cross Section ◽  
Enhancement Factor ◽  
Scattering Cross Section ◽  
The Sun ◽  
Detection Rates ◽  
Scattering Cross ◽  
Elastic Scattering Cross Section ◽  
Upper Limits

We consider the recent limits on dark matter–nucleon elastic scattering cross-section from the analysis of CDMS II collaboration using the two signal events observed in CDMS experiment. With these limits we try to interpret the super-Kamiokande (SK) bounds on the detection rates of up-going muons induced by the neutrinos that are produced in the sun from the decay of annihilation products of dark matter (WIMP's) captured in the solar core. Calculated rates of up-going muons for different annihilation channels at SK using CDMS bounds are found to be orders below the predicted upper limits of such up-going muon rates at SK. Thus there exists room for enhancement (boost) of the calculated rates using CDMS limits for interpreting SK bounds. Such a feature is expected to represent the PAMELA data with the current CDMS limits. We also show the dependence of such a possible enhancement factor (boost) on WIMP mass for different WIMP annihilation channels.

Neutron Photoproduction Cross Section of Calcium

1963 ◽  
Vol 132 (2) ◽  
pp. 749-751 ◽  
Author(s):  
K. Min ◽  
L. N. Bolen ◽  
W. D. Whitehead
Keyword(s):  
Cross Section ◽  
Photoproduction Cross Section

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.

CONFIDENCE LIMITS WITH MULTIPLE CHANNELS AND ARBITRARY PROBABILITY DISTRIBUTIONS FOR SENSITIVITY AND EXPECTED BACKGROUND

2002 ◽  
Vol 13 (08) ◽  
pp. 989-1001 ◽  
Author(s):  
ANDREA PERROTTA
Keyword(s):  
Cross Section ◽  
Bayesian Approach ◽  
Probability Distributions ◽  
Multiple Channels ◽  
Confidence Limits ◽  
Electron Positron ◽  
Upper Limits ◽  
Delphi Experiment ◽  
Background Content ◽  
Mc Method

A MC method is proposed to compute upper limits, in a pure Bayesian approach, when the errors associated to the experimental sensitivity and to the expected background content are not Gaussian distributed or not small enough to apply the usual approximations. It is relatively easy to extend the procedure to the multichannel case (for instance when different decay branchings, or luminosities or experiments have to be combined). Some of the searches for supersymmetric particles performed in the DELPHI experiment at the LEP electron–positron collider use such a procedure to propagate the systematics into the calculation of the cross-section upper limits. One of these searches will be described as an example.

scholarly journals Anomaly in the KS0Σ+ photoproduction cross section off the proton at the K⁎ threshold

2012 ◽  
Vol 713 (3) ◽  
pp. 180-185 ◽  
Author(s):  
R. Ewald ◽  
B. Bantes ◽  
O. Bartholomy ◽  
D. Bayadilov ◽  
R. Beck ◽  
...  
Keyword(s):  
Cross Section ◽  
Photoproduction Cross Section

Total photoproduction cross section of hadrons on nuclei

1971 ◽  
Vol 34 (7) ◽  
pp. 651-654 ◽  
Author(s):  
V. Heynen ◽  
H. Meyer ◽  
B. Naroska ◽  
D. Notz
Keyword(s):  
Cross Section ◽  
Photoproduction Cross Section
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