Technical University of Munich

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 1994Show all

53 papers · 1 filter

hep-ph1994★ 54 cited

Constraints on the Minimal SUSY SO(10) Model from Cosmology and the $b \to s γ$ Decay

F. M. Borzumati, M. Olechowski, S. Pokorski

It is shown that the minimal supersymmetric SO(10) model with electroweak radiative breaking and universal soft mass terms at the GUT scale is strongly disfavoured by the combinati…

hep-ph1994★ 30 cited

Two-loop $O (G_{F}^{2} M_{H}^{4})$ corrections to the fermionic decay rates of the Higgs boson

Loyal Durand, Bernd A. Kniehl, Kurt Riesselmann

We calculate the dominant $O (G_{F}^{2} M_{H}^{4})$ two-loop electroweak corrections to the fermi\-onic decay widths of a heavy Higgs boson in the Standard Model. Use of the…

hep-ph1994★ 28 cited

Novel Pion Electroproduction Low-Energy Theorems

V. Bernard, N. Kaiser, Ulf-G. Meißner

We present novel low--energy theorems for the P--wave multipoles $2 M_{1 +} + M_{1 -}$ , $M_{1 +} - M_{1 -}$ , $E_{1 +}$ and $L_{1 \pm}$ for neutral pion electroproduction off protons. These…

hep-ph1994★ 169 cited

Evanescent Operators, Scheme Dependences and Double Insertions

Stefan Herrlich, Ulrich Nierste

The anomalous dimension matrix of dimensionally regularized four-quark operators is known to be affected by evanescent operators, which vanish in $D = 4$ dimensions. Their definition…

hep-ph1994★ 5 cited

Neutral pion photoproduction off nucleons revisited

V. Bernard, N. Kaiser, Ulf-G. Meißner

We investigate threshold pion photoproduction in the framework of heavy baryon chiral perturbation theory. We give the expansion of the electric dipole amplitude $E_{0 +}$ to three…

hep-th1994★ 22 cited

S-Dual Gaugino Condensation and Supersymmetry Breaking

Z. Lalak, A. Niemeyer, H. P. Nilles

The principle of S-duality is used to incorporate gaugino condensates into effective supergravity (superstring) Lagrangians. We discuss two implementations of S-duality which diffe…

nucl-th1994★ 179 cited

Isospin Dependence of the Spin-Orbit Force and Effective Nuclear Potentials

M. M. Sharma, G. A. Lalazissis, J. Koenig +1

The isospin dependence of the spin-orbit potential is investigated for an effective Skyrme like energy-functional suitable for density-dependent Hartree-Fock calculations. The magn…

cond-mat1994★ 5 cited

Spin Wave Frequency and Critical Dynamics of Ferromagnets Below T_C

H. Schinz, F. Schwabl

Employing mode-coupling theory we show that the amplitude of the spin wave frequency scaling function for the isotropic Heisenberg Hamiltonian is universal. Theoretical and experim…

hep-ph1994★ 224 cited

Two-loop mixing of dimension-five flavor-changing operators

M. Misiak, M. Muenz

We calculate the two-loop QCD mixing of the dimension-five flavor-changing operators that arise in the Standard Model after integrating out the $W$ , $Z$ and Higgs bosons and the to…

hep-ph1994★ 2 cited

Studying Structure of Electroweak Corrections

Zenrō Hioki

Several different effects in electroweak quantum corrections are explored separately through the latest data on the weak-boson masses. The leading-log approximation, the improved-B…

hep-ph1994★ 91 cited

Charm Quark Mass Dependence of QCD Corrections to Nonleptonic Inclusive B Decays

E. Bagan, P. Ball, V. M. Braun +1

We calculate the radiative corrections to the nonleptonic inclusive B decay mode $b \to c u ˉ d$ taking into account the charm quark mass. Compared to the massless case, c…

hep-ph1994★ 109 cited

The Strange Quark Mass from QCD Sum Rules

Matthias Jamin, Manfred M"unz

The strange quark mass is calculated from QCD sum rules for the divergence of the vector as well as axial-vector current in the next-next-to-leading logarithmic approximation. The…

hep-ph1994★ 70 cited

QCD Factors a1 and a2 Beyond Leading Logarithms Versus Factorization in Non-Leptonic Heavy Meson Decays

A. J. Buras

We calculate the QCD factors $a_{1}$ and $a_{2}$ , entering the tests of factorization in non-leptonic heavy meson decays, beyond the leading logarithmic approximation in three renormal…

hep-ph1994★ 35 cited

Mixing-Induced CP Violation in the Decay $B_{d} \to K^{0} K ˉ^{0}$ within the Standard Model

R. Fleischer

Recently, flavour $S U (3)$ symmetry of strong interactions has been combined with certain dynamical assumptions to derive triangle relations among $B$ -meson decay-amplitudes. We sho…

hep-ph1994★ 70 cited

Limitations in Measuring the Angle $β$ by Using $S U (3)$ Relations for $B$ -Meson Decay-Amplitudes

A. J. Buras, R. Fleischer

Flavour $S U (3)$ symmetry of strong interactions and certain dynamical assumptions have been used in a series of recent publications to extract weak CKM phases from $B$ -decays into…

gr-qc1994★ 8 cited

The No-Boundary Wave Function and the Duration of the Inflationary Period

A. Lukas

For the simplest minisuperspace model based on a homogeneous, isotropic metric and a minimally coupled scalar field we derive analytic expressions for the caustic which separates E…

hep-ph1994★ 106 cited

Theoretical Update of the Semileptonic Branching Ratio of B Mesons

E. Bagan, Patricia Ball, V. M. Braun +1

We reconsider the prediction of the semileptonic branching ratio of B mesons, using a recent calculation of the radiative corrections with account for finite quark masses in nonlep…

hep-ph1994★ 1 cited

Nonperturbative effects in heavy quarkonia

C. A. A. Nunes, F. S. Navarra, P. Ring +1

An effective hamiltonian for heavy quarkonia is derived from QCD by separating gluonic fields in background and quantum fields and neglecting anharmonic contributions. Mesonic stat…

hep-ph1994

The determination of $∣ V_{c b} ∣$ from semileptonic inclusive decay rates

U. Nierste

We report on the determination of $∣ V_{c b} ∣$ from the comparison of the semileptonic inclusive decay rates of B-- and D--mesons using the heavy quark symmetry of QCD. While the ren…

hep-ph1994

Next-to-leading order short distance QCD corrections to the effective $Δ S = 2$ Hamiltonian, implications for the $K_{L}$ - $K_{S}$ mass difference

S. Herrlich

We report on the results of a calculation of next-to leading order short distance QCD corrections to the coefficient $η_{1}$ of the effective $Δ S = 2$ Lagrangian in the standard mode…

hep-ph1994

Radiative Corrections to Nonleptonic Inclusive B Decays and the Semileptonic Branching Ratio of B Mesons

P. Ball

We calculate the radiative corrections to the nonleptonic inclusive B decay mode $b \to c u d$ taking into account the charm quark mass. The corrections increase the decay rate by (4…

cond-mat1994★ 5 cited

Universality in the One-Dimensional Self-Organized Critical Forest-Fire Model

Barbara Drossel, Siegfried Clar, Franz Schwabl

We modify the rules of the self-organized critical forest-fire model in one dimension by allowing the fire to jump over holes of $\leq k$ sites. An analytic calculation shows that n…

cond-mat1994★ 11 cited

Crossover from Percolation to Self-Organized Criticality

Barbara Drossel, Siegfried Clar, Franz Schwabl

We include immunity against fire as a new parameter into the self-organized critical forest-fire model. When the immunity assumes a critical value, clusters of burnt trees are iden…

hep-ph1994★ 24 cited

Vector and pseudoscalar charm meson radiative decays

B. Bajc, S. Fajfer, R. J. Oakes

Combining heavy quark effective theory and the chiral Lagrangian approach we investigate radiative decays of pseudoscalar $D$ mesons. We first reanalyse $D^{*} \to D γ$ dec…

Constraints on the Minimal SUSY SO(10) Model from Cosmology and the b→sγ Decay

Two-loop O(GF2​MH4​) corrections to the fermionic decay rates of the Higgs boson

Novel Pion Electroproduction Low-Energy Theorems

Evanescent Operators, Scheme Dependences and Double Insertions

Neutral pion photoproduction off nucleons revisited

S-Dual Gaugino Condensation and Supersymmetry Breaking

Isospin Dependence of the Spin-Orbit Force and Effective Nuclear Potentials

Spin Wave Frequency and Critical Dynamics of Ferromagnets Below T_C

Two-loop mixing of dimension-five flavor-changing operators

Studying Structure of Electroweak Corrections

Charm Quark Mass Dependence of QCD Corrections to Nonleptonic Inclusive B Decays

The Strange Quark Mass from QCD Sum Rules

QCD Factors a1 and a2 Beyond Leading Logarithms Versus Factorization in Non-Leptonic Heavy Meson Decays

Mixing-Induced CP Violation in the Decay Bd​→K0Kˉ0 within the Standard Model

Limitations in Measuring the Angle β by Using SU(3) Relations for B-Meson Decay-Amplitudes

The No-Boundary Wave Function and the Duration of the Inflationary Period

Theoretical Update of the Semileptonic Branching Ratio of B Mesons

Nonperturbative effects in heavy quarkonia

The determination of ∣Vcb​∣ from semileptonic inclusive decay rates

Next-to-leading order short distance QCD corrections to the effective ΔS=2 Hamiltonian, implications for the KL​-KS​ mass difference

Radiative Corrections to Nonleptonic Inclusive B Decays and the Semileptonic Branching Ratio of B Mesons

Universality in the One-Dimensional Self-Organized Critical Forest-Fire Model

Crossover from Percolation to Self-Organized Criticality

Vector and pseudoscalar charm meson radiative decays

Constraints on the Minimal SUSY SO(10) Model from Cosmology and the $b \to s γ$ Decay

Two-loop $O (G_{F}^{2} M_{H}^{4})$ corrections to the fermionic decay rates of the Higgs boson

Mixing-Induced CP Violation in the Decay $B_{d} \to K^{0} K ˉ^{0}$ within the Standard Model

Limitations in Measuring the Angle $β$ by Using $S U (3)$ Relations for $B$ -Meson Decay-Amplitudes

The determination of $∣ V_{c b} ∣$ from semileptonic inclusive decay rates

Next-to-leading order short distance QCD corrections to the effective $Δ S = 2$ Hamiltonian, implications for the $K_{L}$ - $K_{S}$ mass difference