V. Daniel Elvira 's DZERO Page
 
 

The DØ experiment is a particle physics detector at the Fermilab proton-antiproton collider. The first collider run (Run I) was succesfully completed in 1995, with the discovery of the top quark. After a major detector upgrade, the second collider run (Run II) has started in March 2001. With the search for the Higgs boson as the main objective, the DØ detector will also study the properties of the top and bottom quarks, and perform precise measurements of electroweak and QCD processes

              Run II Physics     Run II Detector     Run I Physics  Conferences    Notes

Run II Physics

Co-leader of the Jets Working Group in the Hit (Higgs and top) Physics Group. We are tunning algorithm parameters to minimize systematics associated to Higgs and Top measurements

QCD Run II Workshop. To evaluate the physics potential of Run II to do QCD
(Jan-Dec 1999). Workshop home page

 
• "RUN II JET PHYSICS", Proceedings of the Physics at RUN II: QCD and Weak Boson Physics Workshop, Batavia, Illinois, 4-6 Nov 1999 hep-ex/0005012

As a member of the calorimeter electronics group. I worked on the design of the Timing and Control (T&C) System, a digital board that generates the signals to control all steps of the acquisition and processing of the  calorimeter data signals. The main elements of the T & C system are the Field Programmable Gate Array chips (FPGA), electronic devices which can be programmed as digital circuits.

Run I Physics

 Co-convenor of the QCD group.  Recently, we have published a number of papers on jet and direct photon cross sections. These measurements
are a direct test of perturbative QCD. The DZERO jet cross sections results,
the most accurate to this date, are an essencial tool to search for quark compositeness and also provide information on the x and Q2 dependence of parton distribution functions (pdfs).

• HIGH P(T) JETS IN ANTI-P P COLLISIONS AT S**(1/2) = 630-GEV AND 1800-GEV. Accepted for publication in Phys.Rev.D, 2001 hep-ex/0012046

• INCLUSIVE JET PRODUCTION IN P ANTI-P COLLISIONS. Published in Phys.Rev.Lett.86:1707-1712,2001

• RATIOS OF MULTIJET CROSS-SECTIONS IN P ANTI-P COLLISIONS AT S**(1/2) = 1.8-TEV. Published in Phys.Rev.Lett.86:1955-1960, 2001 hep-ex/0009012

• THE RATIO OF JET CROSS-SECTIONS AT S**(1/2) = 630-GEV AND 1800-GEV. Published in Phys.Rev.Lett.86:2523-2528, 2001 hep-ex/0008072

• PROBING BFKL DYNAMICS IN THE DIJET CROSS-SECTION AT LARGE RAPIDITY INTERVALS IN P ANTI-P COLLISIONS AT S**(1/2) = 1800-GEV AND 630-GEV. Published in Phys.Rev.Lett.84:5722-5727, 2000 hep-ex/9912032

• LIMITS ON QUARK COMPOSITENESS FROM HIGH-ENERGY JETS IN ANTI-P P COLLISIONS AT 1.8-TEV. Published in Phys.Rev.D62:031101, 2000 hep-ex/9912023

• THE ISOLATED PHOTON CROSS-SECTION IN P ANTI-P COLLISIONS AT S**(1/2) = 1.8-TEV. Published in Phys.Rev.Lett.84:2786-2791, 2000 hep-ex/9912017

• THE INCLUSIVE JET CROSS-SECTION IN ANTI-P P COLLISIONS AT S**(1/2) = 1.8-TEV. Published in Phys.Rev.Lett.82:2451-2456, 1999  hep-ex/9807018

• THE DIJET MASS SPECTRUM AND A SEARCH FOR QUARK COMPOSITENESS IN ANTI-P P COLLISIONS AT S**(1/2) = 1.8-TEV. Published in Phys.Rev.Lett.82:2457-2462, 1999 hep-ex/9912017

co-leader of the K_T  Jet Algorithm Physics Group. As an alternative to the fixed cone algorithm, the D0 experiment has implemented a successive combination type of algorithm (KT) to reconstruct jets. This algorithm has been widely used at the DESY e+-e- proton and the CERN electron-positron colliders. The goal of the  KT Jet Algorithm Working Group is to produce physics measurements using Run I (1992-1995) data, and improve our understanding of the KT  algorithm in a hadron collider environment (the Fermilab Tevatron) towards its use in Run II.
 

Leader of the Jet Energy Calibration ProjectAlmost every physics measurement at the Tevatron involves events with jets. An accurate energy calibration is, therefore, crucial. The jet energy scale was the dominant source of systematic uncertainty in both jet production and top mass measurements. The reduction of this uncertainty by a factor of two in the  period 1996-1997 allowed D0 to produce the most precise jet measurements in hadron colliders up to this date.  In this web page, I am storing a number of publications, conference proceedings  and notes produced by the run I Jet Energy Scale Group since 1996.
 

Recent Conference Talks
 

• PIC2000 talk on "QCD at the Tevatron: Jet Production and Fragmentation" (XX Physics in Collisions Conference, Lisbon, Portugal, July 2000).

• DIS99 talk on "Inclusive Jet Cross Sections at 1800 and 630 GeV with the D0 detector" (International Workshop in Deep Inelastic Scattering, Zeuthen, Germany, April 1999).

HTML Slides, PS Slides (DIS99)
PS Proceedings (DIS99)
 
• MORIOND98 QCD. Title: "Inclusive Jet Cross Section at the Tevatron (1.8 TeV)", V.Daniel Elvira for the DZERO and CDF Collaborations.

 

 

PS Talk Slides (Moriond98)
PS Contributing paper (Moriond98)

D0 Internal Notes