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19912026
Showing 1996 · hep-exShow all

19 papers · 2 filters

hep-ex1996

Identification of a sample of e+e- -> qq Events For the Precise Measurement of Alpha_S in High Energy Electron Positron Colliders

Bruce A. Schumm

Based on the PYTHIA physics simulation package, and a fast simulation of the proposed detector for the Next Linear Collider, a set of cuts is identified which leads to a sample of…

hep-ex1996★ 4 cited

Prospects for the Precision Measurement of Alpha_S

P. N. Burrows, L. Dixon, A. X. El-Khadra +5

The prospects for the measurement of the strong coupling constant alpha_msbar(M_Z) to a relative uncertainty of 1% are discussed. Particular emphasis is placed on the implications…

hep-ex1996★ 27 cited

Search for CP Violation in Charged D Meson Decays

Fermilab E791 Collaboration, E. M. Aitala et al

We report results of a search for CP violation in the singly Cabibbo-suppressed decays D+ -> K- K+ pi+, phi pi+, K*(892)0 K+, and pi- pi+ pi+ based on data from the charm hadroprod…

hep-ex1996★ 47 cited

An Improved Measurement of the Left-Right Z0 Cross Section Asymmetry

SLD Collaboration, K. Abe, I. Abt et al

We present a new measurement of the left-right cross section asymmetry (ALR) for Z boson production by e+e- collisions. The measurement was performed at a center-of-mass energy of…

hep-ex1996★ 25 cited

Measurement of the Branching Ratio B(D+ --> rho^0 l nu)/B(D+ --> K*0 l nu)

Fermilab E791 Collaboration, E. M. Aitala et al

We report a measurement of the branching ratio B(D+-->rho^0 l nu)/ B(D+-->K*0 l nu) from the Fermilab charm hadroproduction experiment E791. Based on signals of 49+-17 events in th…

hep-ex1996★ 18 cited

First Measurement of the Left-Right Charge Asymmetry in Hadronic Z Boson Decays and a New Determination of sin^2(theta_eff)

SLD Collaboration, K. Abe, I. Abt

We present the first measurement of the left-right charge asymmetry A_Q^{obs} in hadronic Z boson decays. This was performed at E_cm = 91.27 GeV with the SLD at the SLAC Linear Col…

hep-ex1996★ 26 cited

A study of the orientation and energy partition of three-jet events in hadronic Z0 decays

K. Abe

We have measured the distributions of the jet energies in e+e- --> qq^bar g events, and of the three orientation angles of the event plane, using hadronic decays collected in…

hep-ex1996★ 23 cited

Measurement of the Charged Multiplicities in b, c and Light Quark Events from Z0 Decays

K. Abe

Average charged multiplicities have been measured separately in , and light quark () events from decays measured in the SLD experiment. Impact parameters of cha…

hep-ex1996★ 46 cited

A search for D0-D0bar mixing and doubly-Cabibbo-suppressed decays of the D0 in hadronic final states

The Fermilab E791 Collaboration

We present results of a search for D0-D0bar mixing and doubly-Cabibbo-suppressed decays of the D0 in Fermilab experiment E791, a fixed-target charm hadroproduction experiment. We l…

hep-ex1996★ 39 cited

Observation of Events with an Energetic Forward Neutron in Deep Inelastic Scattering at HERA

ZEUS Collaboration, M. Derrick et al

In deep inelastic neutral current scattering of positrons and protons at the center of mass energy of 300 GeV, we observe, with the ZEUS detector, events with a high energy neutron…

hep-ex1996★ 10 cited

Mass Limit for the Lightest Neutralino

The ALEPH Collaboration

Indirect limits on the mass of the lightest neutralino are derived from the results of searches for charginos, neutralinos, and sleptons performed with data taken by the ALEPH Coll…

hep-ex1996★ 4 cited

First Study of Rapidity Gaps in e+e- Annihilation

SLD Collaboration

We present the first study of rapidity gaps in e+e- annihilations using Z0 decays collected by the SLD experiment at SLAC. Our measured rapidity gap spectra fall exponentially with…

hep-ex1996★ 155 cited

Measurement of the F2 structure function in deep inelastic scattering using 1994 data from the ZEUS detector at HERA

ZEUS Collaboration

We present measurements of the structure function \Ft\ in scattering at HERA in the range $3.5\;\Gevsq < \qsd < 5000\;\Gevsq$. A new reconstruction method has allowed a sign…

hep-ex1996★ 52 cited

Search for D0 - D0_bar Mixing in Semileptonic Decay Modes

E. M. Aitala, E791 Collaboration

We report the result of a search for D0 - D0_bar mixing in the data from hadroproduction experiment E791 at Fermilab. We use the D* tag and semileptonic decay vertices of D0 to loo…

hep-ex1996★ 40 cited

Dijet Angular Distributions in Direct and Resolved Photoproduction at HERA

ZEUS Collaboration

Jet photoproduction, where the two highest transverse energy ($\ETJ$) jets have $\ETJ$ above 6 GeV and a jet-jet invariant mass above 23~GeV, has been studied with the ZEUS detecto…

hep-ex1996★ 41 cited

Measurement of the Reaction in Deep Inelastic Scattering at HERA

ZEUS Collaboration

The production of mesons in the reaction (), for GeV and for virtual photon-proton centre of mass ener…

hep-ex1996★ 15 cited

Mass Splitting and Production of and Measured in N Interactions

E. M. Aitala

From a sample of decaying to the final state, we have observed, in the hadroproduction experiment E791 at Fermilab, and $122 \p…

hep-ex1996★ 36 cited

Factorial and Cumulant Moments in Hadrons at the Z Resonance

SLD Collaboration

We present the first experimental study of the ratio of cumulant to factorial moments of the charged-particle multiplicity distribution in high-energy particle interactions, using…

hep-ex1996★ 85 cited

Asymmetries between the production of D+ and D- mesons from 500 GeV/c pi- nucleon interactions as a function of xF and pt**2

E. M. Aitala, S. Amato, J. C. Anjos +75

We present asymmetries between the production of D+ and D- mesons in Fermilab experiment E791 as a function of xF and pt**2. The data used here consist of 74,000 fully-reconstructe…