539 citations · 1.5k across the 23 of their papers we have counts for
22 papers · 1 filter
Inclusive hadroproduction of , and pentaquarks
Nora Brambilla, Mathias Butenschoen, Simon Hibler +3
We use the Born--Oppenheimer effective field theory factorization to compute the inclusive production cross sections of the and its partner in the bottomonium sector…
How well does NRQCD describe quarkonium production?
Mathias Butenschoen
The question how well nonrelativistic QCD (NRQCD) factorization can describe quarkonium production has been subject to debate since its invention. We review our recent reanalysis o…
How well does nonrelativistic QCD factorization work at next-to-leading order?
Nora Brambilla, Mathias Butenschoen, Xiang-Peng Wang
We perform a thorough investigation of the universality of the long distance matrix elements (LDMEs) of nonrelativistic QCD factorization based on a next-to-leading order (NLO) fit…
Constraints on Nonrelativistic-QCD Long-Distance Matrix Elements from Plus / Production at the LHC
Mathias Butenschoen, Bernd A. Kniehl
We study the associated production of prompt mesons and or bosons within the factorization approach of nonrelativistic QCD (NRQCD) at next-to-leading order in ,…
Global analysis of inclusive hadroproduction at next-to-leading order in nonrelativistic-QCD factorization
Mathias Butenschoen, Bernd A. Kniehl
Working in the nonrelativistic-QCD factorization framework at next-to-leading order in , we fit the relevant color octet (CO) long-distance matrix elements (LDMEs) of the $ψ(2…
Dipole Subtraction vs. Phase Space Slicing in NLO NRQCD Heavy-Quarkonium Production Calculations
Mathias Butenschoen, Bernd A. Kniehl
We compare two approaches to evaluate cross sections of heavy-quarkonium production at next-to-leading order in nonrelativistic QCD involving - and -wave Fock states: the cus…
Dipole subtraction at next-to-leading order in nonrelativistic-QCD factorization
Mathias Butenschoen, Bernd A. Kniehl
We describe an implementation of a subtraction scheme in the nonrelativistic-QCD treatment of heavy-quarkonium production at next-to-leading-order in the strong-coupling constant,…
Deciphering the via its polarization in prompt production at the CERN LHC
Mathias Butenschoen, Zhi-Guo He, Bernd A. Kniehl
Based on the hypothesis that the exotic hadron is a mixture of and other states and that its prompt hadroproduction predominately proceeds via its $χ_{c1}(2P…
Top Quark Mass Calibration for Monte Carlo Event Generators
Mathias Butenschoen, Bahman Dehnadi, Andre H. Hoang +3
The most precise top quark mass measurements use kinematic reconstruction methods, determining the top mass parameter of a Monte Carlo event generator, . Due to hadro…
production at the LHC challenges nonrelativistic-QCD factorization
Mathias Butenschoen, Zhi-Guo He, Bernd A. Kniehl
We analyze the first measurement of production, performed by the LHCb Collaboration, in the nonrelativistic-QCD (NRQCD) factorization framework at next-to-leading order (NLO)…
QCD and strongly coupled gauge theories: challenges and perspectives
N. Brambilla, S. Eidelman, P. Foka +46
We highlight the progress, current status, and open challenges of QCD-driven physics, in theory and in experiment. We discuss how the strong interaction is intimately connected to…
NLO NRQCD disfavors the interpretation of X(3872) as
Mathias Butenschoen, Zhi-Guo He, Bernd A. Kniehl
We study inclusive hadroproduction at next-to-leading order (NLO), both in and , within the factorization formalism of nonrelativistic quantum chromodynamic…
Next-to-leading-order tests of nonrelativistic-QCD factorization with yield and polarization
Mathias Butenschoen, Bernd A. Kniehl
We report on recent progress in testing the factorization formalism of nonrelativistic quantum chromodynamics (NRQCD) at next-to-leading order (NLO) for yield and polarizatio…
J/psi production in NRQCD: A global analysis of yield and polarization
Mathias Butenschoen, Bernd A. Kniehl
We present a rigorous next-to-leading order analysis of J/psi yield and polarization within the factorization theorem of nonrelativistic QCD (NRQCD). To the orders considered, this…
J/psi polarization at Tevatron and LHC: Nonrelativistic-QCD factorization at the crossroads
Mathias Butenschoen, Bernd A. Kniehl
We study the polarization observables of J/psi hadroproduction at next-to-leading order within the factorization formalism of nonrelativistic quantum chromodynamics. We complete th…
Probing nonrelativistic QCD factorization in polarized J/psi photoproduction at next-to-leading order
Mathias Butenschoen, Bernd A. Kniehl
We analyze the polarization observables of J/psi photoproduction at next-to-leading order (NLO) within the factorization formalism of nonrelativistic quantum chromodynamics (NRQCD)…
Recent developments in quarkonium and open flavour production calculations
Mathias Butenschoen
This report reviews recent theory progress in the field of heavy quarkonium and open heavy flavour production calculations.
World data of J/psi production consolidate NRQCD factorization at NLO
Mathias Butenschoen, Bernd A. Kniehl
We calculate the cross sections of inclusive J/psi production in photoproduction and two-photon scattering, involving both direct and resolved photons, and in e^+e^- annihilation a…
J/psi production with NRQCD: HERA, Tevatron, RHIC and LHC
Mathias Butenschoen, Bernd A. Kniehl
We report on our recent calculation of the inclusive direct photo- and hadroproduction of the J/psi meson at next-to-leading order within the factorization formalism of nonrelativi…
J/psi production in ep collisions at HERA
Mathias Butenschoen
This report is a short overview of experimental and theoretical results in J/psi production in electron-proton collisions at DESY HERA with special focus lying on recent developmen…
Direct J/psi photoproduction at next-to-leading-order in nonrelativistic QCD
Mathias Butenschoen, Bernd A. Kniehl
We calculate the cross section of inclusive direct J/psi photoproduction at next-to-leading order within the factorization formalism of nonrelativistic quantum chromodynamics, for…
O(G_F^2 m_t^4) two-loop electroweak correction to Higgs-boson decay to bottom quarks
Mathias Butenschoen, Frank Fugel, Bernd A. Kniehl
We analytically calculate the dominant two-loop electroweak correction, of O(G_F^2 m_t^4), to the partial width of the decay of a Higgs boson, with mass M_H << m_t, into a bottom-q…