نتایج جستجو برای: leaf cross section

تعداد نتایج: 694687  

2007
Iain A. Bertram

Uncertainties in the NLO calculation of the inclusive jet cross section due to the choice renormalization scale and parton distribution functions are explored. These are found to be similar to the size of the experimental uncertainties of the measured cross section.

2017
G. Alkhazov H. Castilla-Valdez F. Couderc C. Deterre V. N. Evdokimov T. Ferbel D. Gerbaudo

2009
Francesca Giordano

Abstract. A multi-dimensional (x,y,z,Ph⊥) extraction of cosφh and cos2φh azimuthal asymmetries of unpolarized Semi-Inclusive Deep Inelastic Scattering at HERMES is discussed. The use of data taken with hydrogen and deuterium targets and the separation of positive and negative hadrons allow to access flavor-dependent information about quark intrinsic transverse momenta and spinorbit correlations...

2009
Björn Penning

Higgs Tevatron combination, more data and new channels (WH → τνbb̄, VH → ττbb̄/ j jττ , VH → j jbb̄, tt̄H → tt̄bb̄) have been added. Most previously used channels have been reanalyzed to gain sensitivity. We use the latest parton distribution functions and gg → H theoretical cross sections when comparing our limits to the SM predictions. With 2.0-3.6 fb−1 of data analyzed at CDF, and 0.9-4.2 fb−1 at ...

2013
D. Schürmann A. Di Leva F. Terrasi

A new measurement of the cross section of Be(p, γ)B will be done in inverted kinematics with the recoil separator ERNA at the CIRCE laboratory in Caserta, Italy. The B recoils will be produced in a windowless hydrogen gas target. We report here on the construction and characterization of the gas cell. In detail we describe measurements for target density, the profile determination via the Li(p,...

2008
T. C. Ferrée D. S. Koltun

We estimate the contribution of inelastic nucleon excitations to the (e, e ′) inclusive cross section in the CEBAF kinematic range. Calculations are based upon parameter-izations of the nucleon structure functions measured at SLAC. Nuclear binding effects are included in a vector-scalar field theory, and are assumed have a minimal effect on the nucleon excitation spectrum. We find that for q < ...

2001
Y. Sumino

The top quark mass will be determined to high accuracy from the shape of the t ¯ t total production cross section in the threshold region at a future linear e + e − collider. Presently the estimated statistical error in the measurement of m MS t (m MS t) is ∼50 MeV, while the estimated theoretical error is 150–200 MeV. In order to reduce the theoretical uncertainty to below 50 MeV, we have rece...

Journal: :Computer Physics Communications 2014
Michal Czakon Alexander Mitov

We present the program Top++ for the numerical evaluation of the total inclusive cross-section for producing top quark pairs at hadron colliders. The program calculates the cross-section in a) fixed order approach with exact next-to-next-to leading order (NNLO) accuracy and b) by including soft-gluon resummation for the hadronic cross-section in Mellin space with full next-to-next-to-leading lo...

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