P. Langefeld

发表

B-quark tagging using neural networks and multivariate statistical methods A comparison of both techniques☆

K. Becks, J. Drees, F. Block, 1993 .

Tuning and test of fragmentation models based on identified particles and precision event shape data

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1996 .

Search for neutral heavy leptons produced in Z decays

E. Vallazza, A. Tsirou, Mariusz Witek, 1997 .

Invariant mass dependence of particle correlations in hadronic final states from the decay of theZ0

A. G. Frodesen, N. N. Khovanski, S. J. Alvsvaag, 1994 .

Energy dependence of the differences between the quark and gluon jet fragmentation

A. G. Frodesen, N. N. Khovanski, S. J. Alvsvaag, 1996 .

Improved measurements of cross-sections and asymmetries at the Z0 resonance

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1994 .

First Evidence for a Charm Radial Excitation, D*'

A. G. Frodesen, N. N. Khovanski, T. B. Skaali, 1998 .

Measurement of | V cs | using W decays at LEP2

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1998 .

Measurement of the transverse spin correlation in Z --> tau+ tau- decays

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1997 .

Measurement of the spin density matrix for the rho(0), K*(0)(892) and phi produced in Z(0) decays

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1997 .

Measurement of the forward-backward asymmetry of charm and bottom quarks at theZ pole usingD*± mesons

J. A. Barrio, A. G. Frodesen, S. J. Alvsvaag, 1995 .

Measurements of the τ polarisation in Z0 decays

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

Measurement of the e+ e- ---> gamma gamma (gamma) cross-section at the LEP energies

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1998 .

Search for Bs0- oscillations

A. G. Frodesen, N. N. Khovanski, T. B. Skaali, 1997 .

Study of rareb decays with the DELPHI detector at LEP

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1996 .

Determination of |Vcb| from the semileptonic decay B0 → D*−ℓ+ν

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1996 .

Observation of orbitally excited B(s) mesons.

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995, Physical Review Letters.

First measurement of the strange quark asymmetry at the Z0 peak

M. Prest, A. Tsirou, F. Formenti, 1995 .

A Measurement of alpha-s from the scaling violation in e+ e- annihilation

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1997 .

Energy dependence of event shapes and of alpha(s) at LEP 2

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1999 .

Measurement and interpretation of the W-pair cross-section in e + e - interactions at 161 GeV

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1997 .

Identified particles in quark and gluon jets

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1997 .

Search for Exclusive Charmless B Meson Decays with the DELPHI Detector at LEP

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

Search for excited leptons in e(+)e(-) collisions at root s=161 GeV

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1997 .

B* production in Z decays

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1995 .

Production of charged particles, K0(s), K+-, p and Lambda in Z --> b anti-b events and in the decay of b hadrons

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

Production characteristics of K0 and light meson resonances in hadronic decays of theZ0

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

DELPHI Collaboration

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1998 .

Search for the lightest chargino at GeV

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1996 .

First measurement of f2-prime (1525) production in Z0 hadronic decays

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1996 .

Kaon interference in the hadronic decays of the Z0

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1996 .

Mean lifetime of theBs0 meson

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1996 .

MEASUREMENT OF DELTA(++)(1232) PRODUCTION IN HADRONIC-Z-DECAYS

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

Upper limits on the branching ratios tau --> mu gamma and tau --> e gamma

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

Production of charged particles, K S 0, K , p and ? in Z ? b b events and in the decay of b hadrons

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

Charged kaon production in tau decays at LEP

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1994 .

European Organization for Nuclear Research Search for Lightest Neutralino and Stau Pair Production in Light Gravitino Scenarios with Stau Nlsp Delphi Collaboration on Leave of Absence from Ihep Serpukhov

A. G. Frodesen, N. N. Khovanski, T. B. Skaali, 1998 .

Measurement of the multiplicity of gluons splitting to bottom quark pairs in hadronic Z0 decays

A. G. Frodesen, N. N. Khovanski, T. B. Skaali, 1997 .

Measurement of the B$^{0}$-$\overline{B}^{0}$ mixing parameter in Delphi

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1994 .

Measurement of the B0 - anti-B0 mixing using the average electric charge of hadron jets in Z0 decays

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1994 .

Search for charged Higgs bosons at LEP 2

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1999 .

Measurement of the e^{+}e^{-}\rightarrow\gamma\gamma(\gamma) cross-section at LEP energies

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1994 .

Search for pair produced heavy scalars in Z0 decays

A. G. Frodesen, N. N. Khovanski, S. J. Alvsvaag, 1994 .

Search for high mass γγ resonances ine^ + e^ - to ell ^ + ell ^ - γ γ ,ν bar ν γ γ andqbar qγ γ at LEP Iat LEP I

A. G. Frodesen, N. N. Khovanski, T. B. Skaali, 1996 .

Search for high massγγ resonances in $$e^ + e^ - \to \ell ^ + \ell ^ - \gamma \gamma $$ , $$\nu \bar \nu \gamma \gamma $$ and $$q\bar q\gamma \gamma $$ at LEP Iat LEP I

A. G. Frodesen, N. N. Khovanski, T. B. Skaali, 1996 .

Observation of short range three-particle correlations in e+e- annihilations at LEP energies

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

Study of prompt photon production in hadronicZ0 decays

Godfrey L. Smith, J. A. Barrio, A. G. Frodesen, 1995 .

Search for heavy neutral Higgs bosons in two-doublet models

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

A measurement of B+ and B0 lifetimes using $$\bar D\ell ^ + $$ events

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

Measurement of Trilinear Gauge Couplings in e+e- Collisions at 161 GeV and 172 GeV

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1998 .

Study of the four-jet anomaly observed at LEP centre-of-mass energies of 130 and 136 GeV

A. G. Frodesen, N. N. Khovanski, G. C. Zucchelli, 1999 .

A precision measurement of the average lifetime ofB hadrons

A. G. Frodesen, N. N. Khovanski, S. J. Alvsvaag, 1994 .

Search for pair-produced neutralinos in events with photons and missing energy from e+e- collisions at $$\sqrt s = 130 - 183$$ GeV

A. G. Frodesen, N. N. Khovanski, T. B. Skaali, 1999 .

Rapidity correlations in Lambda baryon and proton production in hadronic Z0 decays

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1998 .

Measurement of $$\frac{{\Gamma _{b\bar b} }}{{\Gamma _{had} }}$$ using impact parameter measurements and lepton identification

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

Measurement of the $$\Gamma _{b\bar b} /\Gamma _{had} $$ branching ratio of thez by double hemisphere tagging

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

A Study of the hadronic resonance structure in the decay tau ---> 3 pi neutrino(tau)

A. G. Frodesen, N. N. Khovanski, T. B. Skaali, 1998 .

Energy dependence of inclusive spectra in e+ e- annihilation

A. G. Frodesen, N. N. Khovanski, G. C. Zucchelli, 1999 .

First evidence of hard scattering processes in single tagged gamma gamma collisions

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

Study of hard scattering processes in multihadron production from γγ collisions at LEP

A. G. Frodesen, N. N. Khovanski, S. J. Alvsvaag, 1994 .

Measurement of Correlationsbetween Pions from Di erent W ' sin e + e � !

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 2022 .

Search for charginos, neutralinos and gravitinos at LEP

A. G. Frodesen, N. N. Khovanski, T. B. Skaali, 1997, hep-ex/9704020.

Search for charginos, neutralinos and gravitinos in e+ e- interactions at S**(1/2) = 183-GeV

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1999 .

Measurement of B 0 _ dB 0 _ d oscillations

A. G. Frodesen, N. N. Khovanski, T. B. Skaali, 1997 .

Measurement of B 0 dB 0 d oscillations DELPHI Collaboration

A. G. Frodesen, N. N. Khovanski, V. Gracco, 1997 .

Search for the lightest chargino at \Sqrt s = 130 and 136 GeV in DELPHI

J. A. Barrio, A. G. Frodesen, V. L. Uvarov, 1996 .

Search for the lightest chargino at root s=130 and 136 GeV

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1996 .

First study of the interference between initial and final state radiation at the Z resonance

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1996 .

Search for Leptoquarks and FCNC in e+e− annihilations at S(1/2) = 183-GeV

A. G. Frodesen, N. N. Khovanski, T. B. Skaali, 1999 .

m b at M Z

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1998 .

An Upper Limit for $Br(Z^0 \rightarrow ggg)$ from Symmetric 3-jet $Z^0$ Hadronic Decays

J. A. Barrio, A. G. Frodesen, T. B. Skaali, 1996 .

Identified charged particles in quark and gluon jets

A. G. Frodesen, N. N. Khovanski, G. C. Zucchelli, 2000 .

A precise measurement of the partial decay width ratio $R_b^0 = \Gamma_{b\overline{b}}/\Gamma_{had}$

A. G. Frodesen, N. N. Khovanski, T. B. Skaali, 1999 .

Cross-Sections and Leptonic Forward-Backward Asymmetries from the Z0Running of LEP

Godfrey L. Smith, A. G. Frodesen, N. N. Khovanski, 2018 .

Measurement of the rate of events in hadronic Z decays and the extraction of the gluon splitting into

E. Vallazza, Marcia Begalli, A. Tsirou, 1999 .

Search for high mass gamma gamma resonances in e(+)e(-)->l(+)l(-)gamma gamma, nu(nu)over-bar-gamma gamma and q(q)over-bar-gamma gamma at LEP I

Lefébure, Chorowicz, Obraztsov, 1996 .

Search for high mass \ gamma \ gamma resonances in e + e---> l + l-\ gamma \ gamma , \ nu \ overline \ nu \ gamma \ gamma and q \ overlineq \ gamma \ gamma at LEP

A. G. Frodesen, N. N. Khovanski, M. Feindt, 1996 .

Measurement of the e + e -? ??( ?) cross section at the LEP energies

A. G. Frodesen, N. N. Khovanski, Juan Miguel Rodríguez López, 1994 .

Performance of the DELPHI detector

E. Vallazza, M. Prest, Mariusz Witek, 1996 .

Strange baryon production in Z hadronic decays

A. G. Frodesen, N. N. Khovanski, S. J. Alvsvaag, 1995 .

Production of strange B-baryons decaying into Ξ∓−ℓ∓ pairs at LEP

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

Determination of the average lifetime ofb-baryons

Godfrey L. Smith, A. G. Frodesen, N. N. Khovanski, 1996 .

Lifetime and production rate of beauty baryons from Z decays

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

Measurement of the forward-backward asymmetry ofe+e−→Z→ $$b\bar b$$ using prompt leptons and a lifetime tag

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

A search for heavy stable and long-lived squarks and sleptons in e+e− collisions at energies from 130 to 183 GeV

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1998 .

Production rate and decay lifetime measurements ofBs0 mesons at LEP usingDs andϕ mesons

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1994 .

UvA-DARE ( Digital Academic Repository ) A precise measurement of the $ B ^ { 0 } _ { d } $ meson lifetime using a new technique

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1997 .

A measurement of B + and B 0 lifetimes using

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1995 .

UvA-DARE ( Digital Academic Repository ) A precise measurement of the tau lepton lifetime

A. G. Frodesen, N. N. Khovanski, S. J. Alvsvaag, 2003 .

A study of radiative muon-pair events at Z0 energies and limits on an additional Z′ gauge beson

A. G. Frodesen, N. N. Khovanski, S. J. Alvsvaag, 1995 .

Measurement of the mass of the Z boson and the energy calibration of LEP

P. K. Malhotra, J. A. Barrio, P. G. Verdini, 1993 .

Measurement of inclusiveπ0 production in hadronicZ0 decays

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1995 .

J / psi production in the hadronic decays of the Z

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1994 .

Lifetime of charged and neutral B hadrons using event topology

E. Vallazza, M. Prest, A. Tsirou, 1995 .

Measurement of the inclusive charmless and double charm B branching ratios

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1998 .

Production Characteristics of K and Light Meson Resonances in Hadronic Decays of the Z

Petros A. Ioannou, J. A. Barrio, A. G. Frodesen, 1996 .

Measurement of the quark and gluon fragmentation functions in Z0 hadronic decays

A. G. Frodesen, N. N. Khovanski, T. B. Skaali, 1999 .

Measurement of event shape and inclusive distributions at √ s = 130 and 136 GeV

J. A. Barrio, A. G. Frodesen, N. N. Khovanski, 1996 .

First evidence of hard scattering processes in single tagged collisions

Godfrey L. Smith, J. A. Barrio, A. G. Frodesen, 1997 .

A measurement of the photon structure functionF2γ at an averageQ2 of 12 GeV2/c4

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1995 .

Investigation of the splitting of quark and gluon jets

Godfrey L. Smith, P. Abreu, A. G. Frodesen, 1998 .

Two particle angular correlations in e+ e- interactions compared with QCD predictions

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1998 .

Measurement of inclusive K ∗ 0 ( 892 ) , φ ( 1020 ) and K ∗ 02 ( 1430 ) production in hadronic Z decays

A. G. Frodesen, N. N. Khovanski, H. T. Phillips, 1996 .

Measurements of the leptonic branching fractions of the tau

Godfrey L. Smith, A. G. Frodesen, N. N. Khovanski, 1999 .

DELPHI Collaboration

N. N. Khovanski, H. T. Phillips, T. B. Skaali, 1998 .

Search for neutral and charged Higgs bosons in

N. N. Khovanski, M. Feindt, S. Cabrera, 1998 .

Search for promptly produced heavy quarkonium states in hadronic Z decays

Godfrey L. Smith, J. A. Barrio, N. N. Khovanski, 1996 .

Measurement of the W-pair cross-section and of the W mass in ${\mathrm{e^+ e^-}}$ interactions at 172 GeV

Godfrey L. Smith, N. N. Khovanski, H. T. Phillips, 1998 .

EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH

N. N. Khovanski, H. T. Phillips, T. B. Skaali, 1995 .

Measurement of the gluon fragmentation function and a comparison of the scaling violation in gluon and quark jets

Godfrey L. Smith, N. N. Khovanski, H. T. Phillips, 2000 .

Search for charginos, neutralinos and gravitinos at LEP

M. Feindt, S. Cabrera, J. Cuevas, 2004 .