Spin Asymmetries from Charged Current Events (2007)
M. Anselmino, P. Gambino, J. Kalinowski, M. Maul, A. Schäfer, T. Yamanishi, ...
: Charged currents reactions offer the possibility to measure combinations of polarized distribution functions which are linearly independent from those appearing in g p;n 1 (x; Q 2 ). It turns out...
Maul, M., Schäfer, A., Indelicato, Paul
In this paper we present some concepts in heavy ion atomic physics for the extraction of parity violating effects. We investigate the effects of the so-called Stark-quenching, i.e., the fast decay of...
Small x Phenomenology: Summary and status 2002 (2003)
Collaboration, The Small X, Andersen, J., Baranov, S., Collins, J., Dokshitzer, Y., Goerlich, L., ...
A second workshop on small x physics, within the Small x Collaboration, was held in Lund in June 2002 with the aim of over-viewing recent theoretical progress in this area and summarizing the...
QCD Signatures of Narrow Graviton Resonances in Hadron Colliders (2001)
Bijnens, J, Eerola, Paule Anna Mari, Maul, M, Mansson, A, Sjöstrand, Torbjörn
We show that the characteristic p_\perp spectrum yields valuable information for the test of models for the production of narrow graviton resonances in the TeV range at LHC. Furthermore, it is...
QCD Signatures of Narrow Graviton Resonances in Hadron Colliders (2001)
Bijnens, J., Eerola, P., Maul, M., Mansson, A., Sjostrand, T.
We show that the characteristic p_\perp spectrum yields valuable information for the test of models for the production of narrow graviton resonances in the TeV range at LHC. Furthermore, it is...
Higher-twist contributions to F_L and F_2 from instantons (2000)
Dressler, B., Maul, M., Weiss, C.
We study the twist-4 contribution to the unpolarized nucleon structure functions, F_L and F_2, in an approach where the vacuum structure of QCD is described by a dilute medium of instantons...
Do Instantons of the CP(N-1) Model Melt? (2000)
In the two-dimensional CP(N-1) model one can parametrize exact many-instanton solutions via N `constituents' (called `zindons'). This parameterization allows, in principle, a complete `melting' of...
On Statistical Mechanics of Instantons in the CP^{N_c-1} Model (1999)
We introduce an explicit form of the multi-instanton weight including also instanton--anti-instanton interactions for arbitrary $N_c$ in the two-dimensional $CP^{N_c-1}$ model. To that end, we use...
Pion Form Factor in QCD at Intermediate Momentum Transfers (1999)
Braun, V. M., Khodjamirian, A., Maul, M.
We present a quantitative analysis of the electromagnetic pion form factor in the light-cone sum rule approach, including radiative corrections and higher-twist effects. The comparison to the...
Twist-4 contribution to unpolarized structure functions F_L and F_2 from instantons (1999)
Dressler, B., Maul, M., Weiss, C.
We compute in the instanton vacuum the nucleon matrix elements of the twist-4 QCD operators describing power corrections to the second moments of the unpolarized structure functions, F_L and F_2. Our...
Diffractive charged meson pair production (1999)
Lehmann-Dronke, B., Maul, M., Schaefer, S., Stein, E., Schäfer, A.
We investigate the possibility to measure the nonforward gluon distribution function by means of diffractively produced \pi^+\pi^- and K^+K^- pairs in polarized lepton nucleon scattering. The...
Stein, E., Maul, M., Mankiewicz, L., Schäfer, A.
We analyze power corrections to flavour singlet deep inelastic scattering structure functions in the framework of the infrared renormalon model. Our calculations, together with previous results for...
Maul, M., Schäfer, A., Indelicato, Paul
In this paper we present some concepts in heavy ion atomic physics for the extraction of parity violating effects. We investigate the effects of the so-called Stark-quenching, i.e., the fast decay of...
Maul, M., Schäfer, A., Indelicato, Paul
In this paper we present some concepts in heavy ion atomic physics for the extraction of parity violating effects. We investigate the effects of the so-called Stark-quenching, i.e., the fast decay of...
Diffractive Charged Meson Pair Production (1998)
B. Lehmann-Dronke, M. Maul, A. Schäfer, E. Stein, A. Schafer
We investigate the possibility to measure the nonforward gluon distribution function by means of diffractively produced ß + ß \Gamma and K + K \Gamma pairs in polarized lepton nucleon scattering....
A study on Delta u and Delta d in charged current events using polarized beams at HERA (1997)
Charged current events are studied at HERA with polarized beams, using a Monte Carlo event generator and taking into account detector smearing effects. The observed asymmetries are used to study the...
The polarised gluon density from di-jet events in DIS at a polarised HERA (1997)
Rädel, G, Maul, M, De Roeck, A
We present a possible direct measurement of the polarised gluon density scattering, assuming the kinematics of the HERA collider. We show the sensitivity to the x-dependence of $\Delta G(x)$ and to...
The polarised gluon density from di-jet events in DIS at a polarised HERA (1997)
Radel, G., De Roeck, A., Maul, M.
We present a possible direct measurement of the polarised gluon density $\Delta G(x)$ in LO from di-jet production in polarised deep inelastic ep scattering, assuming the kinematics of the HERA...
The polarised gluon density from di-jet events in DIS at a polarised HERA (1997)
Rädel, G, De Roeck, A, Maul, M
We present a possible direct measurement of the polarised gluon density scattering, assuming the kinematics of the HERA collider. We show the sensitivity to the x-dependence of $\Delta G(x)$ and to...
Semi-inclusive asymmetries with polarized proton beams at HERA (1997)
Maul, M., Contreras, J. G., Ihssen, H., Schafer, A.
The prospects of semi-inclusive measurements with polarized proton beams at HERA are discussed. Detailed simulations show that one can disentangle the valence-quark and sea-quark contribution to the...
Renormalons and Higher-Twist Contributions to Structure Functions (1997)
Maul, M., Stein, E., Mankiewicz, L., Meyer-Hermann, M., Schafer, A.
We review the possibility to use the renormalons emerging in the perturbation series of the twist-2 part of the nonsinglet structure functions FL, F2, F3, and g1 to make approximate predictions for...
Recent developments of PEPSI and SPHINX (1997)
Martin, O., Maul, M., Schafer, A.
Recent developments of the two MC-generators SPHINX and PEPSI are discussed. In SPHINX the process of polarized photo production was included to simulate the potential of a polarized HERA to measure...
Asymmetry distributions and mass effects in dijet-events at a polarized HERA (1997)
Maul, M, Schäfer, A, Mirkes, E, Rädel, G
The asymmetry distributions for several kinematic variables are considered for finding a systematic way to maximize the signal for the extraction of the polarized gluon density. The relevance of mass...
Asymmetry distributions and mass effects in dijet events at a polarized HERA (1997)
Maul, M., Schafer, A., Mirkes, E., Radel, G.
The asymmetry distributions for several kinematic variables are considered for finding a systematic way to maximize the signal for the extraction of the polarized gluon density. The relevance of mass...
Maul, M., Schafer, A., Indelicato, P.
In this paper we present some concepts in heavy ion atomic physics for the extraction of parity violating effects. We investigate the effects of the so-called Stark-quenching, i.e., the fast decay of...
Perturbative Part of the Non-Singlet Structure Function F_2 in the Large-N_F Limit (1997)
Mankiewicz, L., Maul, M., Stein, E.
We have calculated $\bar{MS}$ Wilson coefficients and anomalous dimensions for the non-singlet part of the structure function F_2 in the large-N_F limit. Our result agrees with exact two and three...
Phenomenology of IR-renormalons in inclusive processes (1996)
Maul, M., Stein, E., Schäfer, A., Mankiewicz, L.
We have compared the existing experimental data on the leading power corrections to the structure functions $F_2(x,Q^2), F_3(x,Q^2)$, and $F_L(x,Q^2)$ with the IR-renormalon model predictions for...
Prospects for Measuring $\Delta$G from Jets at HERA with Polarized Protons and Electrons (1996)
Rädel, G, Wu, C Y, Schäfer, A, Mirkes, E, Maul, M, Kunne, F, ...
The measurement of the polarized gluon distribution function Delta G(x) from photon-gluon fusion processes in electron-proton deep inelastic scattering producing two jets has been investigated. The...
Prospects for Measuring Delta G from Jets at HERA with Polarized Protons and Electrons (1996)
De Roeck, A., Feltesse, J., Kunne, F., Maul, M., Mirkes, E., Raedel, G., ...
The measurement of the polarized gluon distribution function Delta G(x) from photon-gluon fusion processes in electron-proton deep inelastic scattering producing two jets has been investigated. The...
Prospects for Measuring $\Delta$G from Jets at HERA with Polarized Protons and Electrons (1996)
Rädel, G, De Roeck, A, Feltesse, Joel, Kunne, Fabienne, Maul, M, Mirkes, E, ...
The measurement of the polarized gluon distribution function Delta G(x) from photon-gluon fusion processes in electron-proton deep inelastic scattering producing two jets has been investigated. The...
Analyzing the nucleon spin in weak interaction processes at HERA energies (1996)
We investigate the possibility to measure the spin content carried by the different quark flavors in a nucleon by means of polarized deep inelastic scattering with $W^\pm$ exchange at HERA. Such...
IR-Renormalon Contribution to the Polarized Structure Function $g_1$ (1996)
Meyer-Hermann, M., Maul, M., Mankiewicz, L., Stein, E., Schäfer, A.
An estimation of the higher twist contribution to the polarized nonsinglet structure function $g_1$ is given. Its first moment is generally assumed to be small but this could be due to a cancellation...
Prospects for Parity Non-conservation Experiments with Highly Charged Heavy Ions (1996)
Maul, M., Sch{ä}fer, A., Greiner, W., Indelicato, P.
We discuss the prospects for parity non-conservation experiments with highly charged heavy ions. Energy levels and parity mixing for heavy ions with two to five electrons are calculated. We...
Maul, M., Ehrnsperger, B., Stein, E., Schäfer, A.
We perform a systematic operator product expansion of the most general form of the nucleon scattering tensor $W_{\mu \nu}$ including electro-magnetic and weak interaction processes. Finite quark...
THE α PEAK IN DEFORMED NIOBIUM AND TANTALUM AND THE PROBLEM OF HYDROGEN IMPURITIES (1983)
Funk, G., Maul, M., Schultz, H.
Hydrogen degassing of Nb and Ta can be achieved effectively by Pd-surface layers and annealing in air or low pressure oxygen atmosphere at 420-450K. The H-Snoek-Koester peak can be removed completely...
THE α PEAK IN DEFORMED NIOBIUM AND TANTALUM AND THE PROBLEM OF HYDROGEN IMPURITIES (1983)
Funk, G., Maul, M., Schultz, H.
Hydrogen degassing of Nb and Ta can be achieved effectively by Pd-surface layers and annealing in air or low pressure oxygen atmosphere at 420-450K. The H-Snoek-Koester peak can be removed completely...
THE α PEAK IN DEFORMED NIOBIUM AND TANTALUM AND THE PROBLEM OF HYDROGEN IMPURITIES (1983)
Funk, G., Maul, M., Schultz, H.
Hydrogen degassing of Nb and Ta can be achieved effectively by Pd-surface layers and annealing in air or low pressure oxygen atmosphere at 420-450K. The H-Snoek-Koester peak can be removed completely...
HYDROGEN-DISLOCATION INTERACTIONS AND INTRINSIC DISLOCATION RELAXATION IN NIOBIUM (1981)
The dislocation relaxation between 100 K and 200 K (1kHz) in plastically deformed niobium, formerly named "α-relaxation" is a hydrogen Snoek-Köster relaxation (cold work relaxation). This is...
HYDROGEN-DISLOCATION INTERACTIONS AND INTRINSIC DISLOCATION RELAXATION IN NIOBIUM (1981)
The dislocation relaxation between 100 K and 200 K (1kHz) in plastically deformed niobium, formerly named "α-relaxation" is a hydrogen Snoek-Köster relaxation (cold work relaxation). This is...
HYDROGEN-DISLOCATION INTERACTIONS AND INTRINSIC DISLOCATION RELAXATION IN NIOBIUM (1981)
The dislocation relaxation between 100 K and 200 K (1kHz) in plastically deformed niobium, formerly named "α-relaxation" is a hydrogen Snoek-Köster relaxation (cold work relaxation). This is...