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Hadronic Matrix Elements
"... I discuss briefly the importance of hadronic matrix elements and the existing methods to calculate them. Since weak interactions are essentially a short distance effect (compared to the QCD scale of about 1GeV), their low energy manifestations can be described by matrix elements of an effective Hami ..."
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I discuss briefly the importance of hadronic matrix elements and the existing methods to calculate them. Since weak interactions are essentially a short distance effect (compared to the QCD scale of about 1GeV), their low energy manifestations can be described by matrix elements of an effective
Nucleon Axial Matrix Elements
, 2008
"... Current issues associated with nucleon axial matrix elements are studied, including the GoldbergerTreiman discrepancy, the induced pseudoscalar, and SU(3) chiral perturbation theory. 0 1 ..."
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Current issues associated with nucleon axial matrix elements are studied, including the GoldbergerTreiman discrepancy, the induced pseudoscalar, and SU(3) chiral perturbation theory. 0 1
Measuring Sparticles with the Matrix Element
"... Abstract. We apply the Matrix Element Method (MEM) to mass determination of squark pair production with direct decay to quarks and LSP at the LHC, showing that simultaneous mass determination of squarks and LSP is possible. We furthermore propose methods for inclusion of QCD radiation effects in the ..."
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Abstract. We apply the Matrix Element Method (MEM) to mass determination of squark pair production with direct decay to quarks and LSP at the LHC, showing that simultaneous mass determination of squarks and LSP is possible. We furthermore propose methods for inclusion of QCD radiation effects
on penguin matrix elements
, 2001
"... Abstract: In the calculation of nonleptonic weak decay rates, a \mismatch " arises when the QCD evolution of the relevant weak hamiltonian down to hadronic scales is performed in unquenched QCD, but the hadronic matrix elements are then computed in (partially) quenched lattice QCD. This mismat ..."
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Abstract: In the calculation of nonleptonic weak decay rates, a \mismatch " arises when the QCD evolution of the relevant weak hamiltonian down to hadronic scales is performed in unquenched QCD, but the hadronic matrix elements are then computed in (partially) quenched lattice QCD
of Matrix Elements of Electroweak Currents ∗
, 1998
"... The matrix elements of electroweak currents which occur in exclusive decays of heavy hadrons are evaluated in the nonperturbative lightcone Fock representration. In general, each semileptonic exclusive decay amplitude receives two contributions, a diagonal ∆n = 0 partonnumberconserving amplitude ..."
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The matrix elements of electroweak currents which occur in exclusive decays of heavy hadrons are evaluated in the nonperturbative lightcone Fock representration. In general, each semileptonic exclusive decay amplitude receives two contributions, a diagonal ∆n = 0 partonnumberconserving amplitude
MatrixElement Corrections to
, 1994
"... We discuss two ways in which parton shower algorithms can be supplemented by matrixelement corrections to ensure the correct hard limit: by using complementary phasespace regions, or by modifying the shower itself. In the former case, existing algorithms are selfconsistent only if the total corre ..."
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We discuss two ways in which parton shower algorithms can be supplemented by matrixelement corrections to ensure the correct hard limit: by using complementary phasespace regions, or by modifying the shower itself. In the former case, existing algorithms are selfconsistent only if the total
Matching Matrix Elements
, 2003
"... Abstract: We report on our exploration of matching matrix element calculations with the partonshower models contained in the event generators HERWIG and PYTHIA. We describe results for e + e − collisions and for the hadroproduction of W bosons and Drell–Yan pairs. We compare methods based on (1) a ..."
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Abstract: We report on our exploration of matching matrix element calculations with the partonshower models contained in the event generators HERWIG and PYTHIA. We describe results for e + e − collisions and for the hadroproduction of W bosons and Drell–Yan pairs. We compare methods based on (1) a
Determination of the CKM matrix elements Vxb
"... We review the current status of Vcb, Vub  and Vtb, the absolute values of the matrix elements in the CKM third column. 1. ..."
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We review the current status of Vcb, Vub  and Vtb, the absolute values of the matrix elements in the CKM third column. 1.
Zeros in (inverse) Bremsstrahlung Matrix Elements
"... We discuss the possibility of zeros in the nonrelativistic radiative continuum continuum matrix element for electronatom (inverse) bremsstrahlung. As earlier demonstrated for upward transitions from bound states, the occurrence of different signs for the freefree matrix element in limiting cas ..."
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We discuss the possibility of zeros in the nonrelativistic radiative continuum continuum matrix element for electronatom (inverse) bremsstrahlung. As earlier demonstrated for upward transitions from bound states, the occurrence of different signs for the freefree matrix element in limiting
Gluonic Pole Matrix Elements and Universality
, 812
"... Abstract. We investigate the spectral properties of quarkquarkgluon correlators and use this to study gluonic pole matrix elements. Such matrix elements appear in principle both for distribution functions such as the Sivers function and fragmentation functions such as the Collins function. We find ..."
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Abstract. We investigate the spectral properties of quarkquarkgluon correlators and use this to study gluonic pole matrix elements. Such matrix elements appear in principle both for distribution functions such as the Sivers function and fragmentation functions such as the Collins function. We
Results 1  10
of
14,138