activity
19992004
collaborators

6 papers

hep-ph2004

Associated Production of Bottomonia and Higgs Bosons at Hadron Colliders

Bernd A. Kniehl, Caesar P. Palisoc, Lennart Zwirner

We study the associated production of bottomonia and Higgs bosons at hadron colliders within the factorization formalism of nonrelativistic quantum chromodynamics providing all con…

hep-ph2003

Prompt J/psi production in charged-current deep-inelastic scattering

Bernd A. Kniehl, Lennart Zwirner

We calculate the cross section of J/psi inclusive production in lepton-nucleon deep-inelastic scattering via the weak charged current within the factorization formalism of nonrelat…

hep-ph2002

Associated Production of Heavy Quarkonia and Electroweak Bosons at Present and Future Colliders

Bernd A. Kniehl, Caesar P. Palisoc, Lennart Zwirner

We investigate the associated production of heavy quarkonia, with angular-momentum quantum numbers ^{2S+1}L_J = ^1S_0, ^3S_1, ^1P_1, ^3P_J (J = 0, 1, 2), and photons, Z bosons, and…

hep-ph2002

J/psi Inclusive Production in nu N Neutral-Current Deep-Inelastic Scattering

Bernd A. Kniehl, Lennart Zwirner

We calculate the cross section of J/psi inclusive production in neutrino-nucleon deep-inelastic scattering via the weak neutral current within the factorization formalism of nonrel…

hep-ph2001

J/psi Inclusive Production in ep Deep-Inelastic Scattering at DESY HERA

Bernd A. Kniehl, Lennart Zwirner

We calculate the cross section of J/psi plus jet associated production in ep deep-inelastic scattering within the factorization formalism of nonrelativistic quantum chromodynamics.…

hep-ph1999

Massive-Evolution Effects on Charmonium Hadroproduction

Bernd A. Kniehl, Lennart Zwirner

The fragmentation functions D_{a -> H}(x,mu^2) of a heavy hadron H, with mass m_H, satisfy the phase-space constraint D_{a - > H}(x,mu^2)=0 for x < m_H^2/mu^2, which is violated by…