Fermi National Accelerator Laboratory

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 2004Show all

210 papers · 1 filter

hep-ex2004★ 699 cited

Measurement of the J/Psi Meson and b-Hadron Production Cross Sections in ppbar Collisions at sqrt s = 1960 GeV

D. Acosta, CDF Collaboration

We present a new measurement of the inclusive and differential production cross sections of $J / ψ$ mesons and $b$ -hadrons in proton-antiproton collisions at $s = 1960$ GeV. The…

astro-ph2004★ 77 cited

Discovery of Two Gravitationally Lensed Quasars with Image Separations of 3 Arcseconds from the Sloan Digital Sky Survey

Masamune Oguri, Naohisa Inada, Joseph F. Hennawi +15

We report the discovery of two doubly-imaged quasars, SDSS J100128.61+502756.9 and SDSS J120629.65+433217.6, at redshifts of 1.838 and 1.789 and with image separations of 2.86'' an…

hep-ph2004★ 10 cited

Prospects of mass measurements for neutral MSSM Higgs bosons in the intense-coupling regime at a Linear Collider

E. Boos, V. Bunichev, A. Djouadi +1

We analyze the prospects for detecting the three neutral Higgs bosons of the Minimal Supersymmetric extension of the Standard Model in the intense-coupling regime at e+e- colliders…

hep-ex2004

Future Hadron Physics Facilities at Fermilab

Jeffrey A. Appel

Fermilab's hadron physics research continues in all its accelerator-based programs. These efforts will be identified, and the optimization of the Fermilab schedules for physics wil…

astro-ph2004★ 1 cited

Variable stars as standard candles and stellar tracers

G. Bono, M. Cignoni

We review the current status of classical Cepheid and RR Lyrae distance scales. We discuss the most recent theoretical and empirical findings together with pros and cons of differe…

hep-ph2004★ 39 cited

Diagnostic Potential of Cosmic-Neutrino Absorption Spectroscopy

Gabriela Barenboim, Olga Mena Requejo, Chris Quigg

Annihilation of extremely energetic cosmic neutrinos on the relic-neutrino background can give rise to absorption lines at energies corresponding to formation of the electroweak ga…

hep-th2004★ 26 cited

Energy scales in a stabilized brane world

Edward E. Boos, Yuri S. Mikhailov, Mikhail N. Smolyakov +1

Brane world gravity looks different for observers on positive and negative tension branes. First we consider the well-known RS1 model with two branes embedded into the AdS_5 space-…

hep-ph2004★ 36 cited

Virtual effects of light gauginos and higgsinos: a precision electroweak analysis of split supersymmetry

Stephen P. Martin, Kazuhiro Tobe, James D. Wells

We compute corrections to precision electroweak observables in supersymmetry in the limit that scalar superpartners are very massive and decoupled. This leaves charginos and neutra…

hep-ph2004★ 107 cited

Discovering an Invisibly Decaying Higgs at Hadron Colliders

Hooman Davoudiasl, Tao Han, Heather E. Logan

A Higgs boson lighter than 2 m_W that decays mostly into invisible channels (e.g., dark matter particles) is theoretically well-motivated. We study the prospects for discovery of s…

hep-ph2004★ 106 cited

The Supersymmetric Origin of Matter

C. Balazs, M. Carena, A. Menon +2

The Minimal Supersymmetric extension of the Standard Model (MSSM) can provide the correct neutralino relic abundance and baryon number asymmetry of the universe. Both may be effici…

hep-ph2004

Heavy Quarkonium Physics

N. Brambilla, M. Krämer, R. Mussa +82

This report is the result of the collaboration and research effort of the Quarkonium Working Group over the last three years. It provides a comprehensive overview of the state of t…

hep-ph2004★ 124 cited

Probing Electroweak Top Quark Couplings at Hadron Colliders

U. Baur, A. Juste, L. H. Orr +1

We consider QCD t\bar{t}γand t\bar{t}Z production at hadron colliders as a tool to measure the ttγand ttZ couplings. At the Tevatron it may be possible to perform a first, albeit n…

hep-ex2004★ 58 cited

Measurement of the Lifetime Difference Between B_s Mass Eigenstates

D. Acosta

We present measurements of the lifetimes and polarization amplitudes for B_s --> J/psi phi and B_d --> J/psi K*0 decays. Lifetimes of the heavy (H) and light (L) mass eigenstates i…

hep-ex2004★ 37 cited

Measurement of the Cross Section for Prompt Diphoton Production in p-pbar Collisions at sqrt(s) = 1.96 TeV

D. Acosta et al

We report a measurement of the rate of prompt diphoton production in $p p ˉ$ collisions at $s = 1.96 TeV$ using a data sample of 207 pb $^{- 1}$ collected with the up…

hep-ex2004★ 12 cited

Search for Anomalous Kinematics in ttbar Dilepton Events at CDF II

CDF collaboration, D. Acosta

We report on a search for anomalous kinematics of ttbar dilepton events in ppbar collisions at sqrt{s}=1.96 TeV using 193 {pb}^{-1} of data collected with the CDF II detector. We d…

hep-ex2004★ 32 cited

Measurement of the doubly Cabibbo suppressed decay $D^{0} \to K^{+} π^{-}$ and a search for charm mixing

FOCUS Collaboration, J. M. Link

We present an analysis of the decay $D^{0} \to K^{+} π^{-}$ based on FOCUS data. From a sample of 234 signal events, we find a branching ratio of $\frac{Γ(D^0 \to K^+π^-)}{Γ(D^0 \to K^-π^…

hep-ex2004★ 34 cited

Measurements of Bottom Anti-Bottom Azimuthal Production Correlations in Proton-Antiproton Collisions at s**(1/2)= 1.8 TeV

CDF Collaboration

We have measured the azimuthal angular correlation of bottom anti-bottom production, using 86.5 pb-1 of data collected by Collider Detector at Fermilab (CDF) in proton anti-proton…

hep-ex2004★ 12 cited

A Search for Anomalous Heavy-Flavor Quark Production in Association with W Bosons

D0 Collaboration, V. M. Abazov

We present a search for anomalous production of heavy-flavor quark jets in association with a W boson at the Fermilab Tevatron ppbar Collider. This search is conducted through an e…

hep-th2004★ 87 cited

Gravity on codimension 2 brane worlds

Ignacio Navarro, Jose Santiago

We compute the matching conditions for a general thick codimension 2 brane, a necessary previous step towards the investigation of gravitational phenomena in codimension 2 branewor…

physics.acc-ph2004★ 3 cited

The Neutrino Factory and Beta Beam Experiments and Development

C. Albright, V. Barger, J. Beacom +13

The long-term prospects for fully exploring three-flavor mixing in the neutrino sector depend upon an ongoing and increased investment in the appropriate accelerator R&D. Two new c…

hep-th2004★ 29 cited

Dimensional Deconstruction and Wess-Zumino-Witten Terms

Christopher T. Hill, Cosmas K. Zachos

A new technique is developed for the derivation of the Wess-Zumino-Witten terms of gauged chiral lagrangians. We start in D=5 with a pure (mesonless) Yang-Mills theory, which inclu…

hep-ph2004★ 16 cited

Corrections to Quark Asymmetries at LEP

A. Freitas, K. Moenig

The most precise measurement of the weak mixing angle sin^2(theta) at LEP is from the forward-backward asymmetry e+e- --> bbbar at the Z-pole. In this note the QED and electroweak…

hep-ex2004★ 28 cited

Measurement of the W Boson Polarization in Top Decay at CDF at s**(1/2) = 1.8 TeV