788 citations · 7.6k across the 77 of their papers we have counts for
29 papers · 1 filter
Muons in air showers at the Pierre Auger Observatory: Measurement of atmospheric production depth
Pierre Auger Collaboration
The surface detector array of the Pierre Auger Observatory provides information about the longitudinal development of the muonic component of extensive air showers. Using the timin…
Measurement of the proton-air cross-section at TeV with the Pierre Auger Observatory
Pierre Auger Collaboration
We report a measurement of the proton-air cross-section for particle production at the center-of-mass energy per nucleon of 57 TeV. This is derived from the distribution of the dep…
Inclusive single-particle production in two-photon collisions at LEP II with the DELPHI detector
The DELPHI Collaboration, J. Abdallah
A study of the inclusive charged hadron production in two-photon collisions is described. The data were collected with the DELPHI detector at LEP II. Results on the inclusive singl…
Study of W boson polarisations and Triple Gauge boson Couplings in the reaction e+e- -> W+W- at LEP 2
The DELPHI Collaboration, J. Abdallah
A determination of the single W Spin Density Matrix (SDM) elements in the reaction e+e- -> W+W- -> l nu q qbar (l=e/mu) is reported at centre-of-mass energies between 189 and 209 G…
Measurement of the Tau Lepton Polarisation at LEP2
DELPHI Collaboration, J. Abdallah
A first measurement of the average polarisation P_tau of tau leptons produced in e+e- annihilation at energies significantly above the Z resonance is presented. The polarisation is…
Search for Pentaquarks in the Hadronic Decays of the Z Boson with the DELPHI Detector at LEP
The DELPHI Collaboration, J. Abdallah
The quark model does not exclude states composed of more than three quarks, like pentaquark systems. Controversial evidence for such states has been published in the last years, in…
Study of Leading Hadrons in Gluon and Quark Fragmentation
The DELPHI Collaboration, J. Abdallah
The study of quark jets in e+e- reactions at LEP has demonstrated that the hadronisation process is reproduced well by the Lund string model. However, our understanding of gluon fr…
Masses, Lifetimes and Production Rates of Xi- and anti-Xi+ at LEP 1
The DELPHI Collaboration, J. Abdallah
Measurements of the Xi- and anti-Xi+ masses, mass differences, lifetimes and lifetime differences are presented. The anti-Xi+ sample used is much larger than those used previously…
Search for Neutral MSSM Higgs Bosons at LEP
ALEPH, DELPHI, L3 +1
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for the neutral Higgs bosons which are predicted by the Minimal Supersymmetric Standard Model (MSSM). The dat…
Search for eta_b in two-photon collisions at LEP II with the DELPHI detector
The DELPHI Collaboration, J. Abdallah
The pseudoscalar meson eta_b has been searched for in two-photon interactions at LEP II. The data sample corresponds to a total integrated luminosity of 617 pb^{-1} at centre-of-ma…
Coherent Soft Particle Production in Z Decays into Three Jets
The DELPHI Collaboration, J. Abdallah
Low-energy particle production perpendicular to the event plane in three-jet events produced in Z decays in e+e- annihilation is measured and compared to that perpendicular to the…
A measurement of the branching fractions of the b-quark into charged and neutral b-hadrons
The DELPHI Collaboration, J. Abdallah
The production fractions of charged and neutral b-hadrons in b-quark events from Z0 decays have been measured with the DELPHI detector at LEP. An algorithm has been developed, base…
Measurement of Inclusive f_1(1285) and f_1(1420) Production in Z Decays with the DELPHI Detector
The DELPHI Collaboration, J. Abdallah
DELPHI results are presented on the inclusive production of two (K Kbar pi)^0 states in the mass region 1.2-1.6 GeV/c^2 in hadronic Z decays at LEP I. The measured masses (widths)…
Study of Inclusive J/psi Production in Two-Photon Collisions at LEP II with the DELPHI Detector
The DELPHI Collaboration, J. Abdallah
Inclusive J/psi production in photon-photon collisions has been observed at LEP II beam energies. A clear signal from the reaction gamma gamma -> J/psi+X is seen. The number of obs…
Inclusive b Decays to Wrong Sign Charmed Mesons
The DELPHI Collaboration, J. Abdallah
The production of wrong sign charmed mesons b -> \bar D_{(s)} X, D_{(s)}=(D0,D+,D_s), is studied using the data collected by the DELPHI experiment in the years 1994 and 1995. Charm…
Search for Doubly Charged Higgs Bosons at LEP2
The DELPHI Collaboration, J. Abdallah
A search for pair-produced doubly charged Higgs bosons has been performed using the data collected by the DELPHI detector at LEP at centre-of-mass energies between 189 and 209 GeV.…
Rapidity-Alignment and p_T Compensation of Particle Pairs in Hadronic Z0 Decays
The DELPHI Collaboration, J. Abdallah
Observation is made of rapidity-alignment of K+K- and ppbar pairs which results from their asymmetric orientation in rapidity, with respect to the direction from primary quark to a…
Search for Charged Higgs Bosons in e+e- Collisions at sqrt(s)=189-202 GeV
The DELPHI Collaboration, J. Abdallah
A search for pair-produced charged Higgs bosons was performed in the high energy data collected by the DELPHI detector at LEP II at centre-of-mass energies from 189 GeV to 202 GeV.…
Single Intermediate Vector Boson Production in e+e- collisions at sqrt(s) = 183 and 189 GeV
DELPHI Collaboration, P. Abreu
The cross-sections for the production of single charged and neutral intermediate vector bosons were measured using integrated luminosities of 52 pb^{-1} and 154 pb^{-1} collected b…
Measurement of the anti-B ---> D* pi lepton anti-neutrino(lepton) Branching Fraction
The DELPHI Collaboration, P. Abreu
A study of b semileptonic decays into D, D pi+- and D* pi+- final states is presented. The D0, D+ and D*+ mesons are exclusively reconstructed in Z decay data recorded from 1992 to…
Measurement of the Mass and Width of the W Boson in e+e- Collisions at sqrt(s) = 189 GeV
The DELPHI Collaboration, P. Abreu
A measurement of the W mass and width has been performed by the DELPHI collaboration using the data collected during 1998. The data sample has an integrated luminosity of 155 pb^{-…
Search for a fermiophobic Higgs at LEP 2
The DELPHI Collaboration, P. Abreu
Higgs bosons predicted by the fermiophobic scenario within Two Higgs Doublets Models were searched for in the data collected by the DELPHI detector at centre-of-mass energies betwe…
Update of the search for charginos nearly mass-degenerate with the lightest neutralino
The DELPHI Collaboration, P. Abreu
The data collected by DELPHI in 1998 at the centre-of-mass energy of 189 GeV have been used to update the search for charginos nearly mass-degenerate with the lightest supersymmetr…
Search for supersymmetric partners of top and bottom quarks at sqrt(s) = 189 GeV
The DELPHI Collaboration, P. Abreu
Searches for supersymmetric partners of top and bottom quarks are presented using data taken by the DELPHI experiment at LEP in 1997 and 1998. No deviations from standard model exp…