Welcome to the
Home Page of
JUAN PABLO
NEGRET ARBOLEDA
A.A. 4976
Tel 57-1-332 4500 (Physics Department)
Tel 57-1-339 4949, extension 2736 (Uniandes
switchboard)
Fax 57-1-332 4516
Office at H-313
Enlaces a temas ofrecidos para TESIS (DOCTORADO) Y TRABAJOS DE GRADO (MAESTRIA)
Enlaces a temas ofrecidos para PROYECTOS DE GRADO (PREGRADO)
Enlaces a actividades recientes en DOCENCIA, INVESTIGACION, y OTROS.
Links to
recent activities in TEACHING, RESEARCH,
and OTHER (in Spanish).
A summary
information on the Uniandes High Energy Group is found here.
June of 2010
EDUCATION
Ph.D. degree in
experimental high energy physics, Purdue
University, West Lafayette, Indiana, U.S.A., 1987.
M.S. degree, University of Illinois, Urbana,
Illinois, U.S.A., 1977.
B.E.E. degree, Universidad del Cauca, Popayán,
Colombia, 1974.
RESEARCH
EXPERIENCE
Experience in
scientific research since 1973. In experimental high energy physics since 1977,
having participated in several experimental projects with colleagues from the
United States, Europe, Asia and Latin America at the Fermilab and Brookhaven accelerators and the HPW
underground experiment. Author or co-author of over 250
articles published in leading physics journals, and a total of over 400 scientific
writings, with over 15000 citations (27 articles with over 100 citations and
one article with over 1600 citations). Since 1991 a member of the D0 Collaboration at Fermilab, where the top
quark was discovered in 1995. Has participated in a dozen research projects
approved by financing agencies in the United States and Colombia. In 1994 the
government of Colombia chose him as one of the leading physics researchers in
the country.
Working since 1989
at the Department of Physics of Universidad de los Andes (Uniandes) in Bogotá,
Colombia, where he is a Full Professor and where he has been promoter and
leader of the High Energy Physics Group. This
group is the pioneering group in the Andean Region and one of the most
important in Latin America, at present, with the participation of eight PhD
physicists from Colombia and elsewhere. The activities of the group under his
coordination between 1989 and 1995 received support from Uniandes, Colciencias
(the Colombian Government Science Funding Agency), Fermilab and NSF, among
others, at the level of one million dollars. As recognition to the labor of the
Group, Fermilab permanently displays the Colombian flag in front of its main
building. He is one of the principal Colombian investigators with the D0
Collaboration at Fermilab, where he has worked since 1991, in areas of
hardware, software and physics analysis, in particular the physics of the b
quark. D0 is a large general-purpose proton-antiproton collider detector
proposed and initially led by Paul Grannis (Stony Brook).
In 1984 he proposed
the creation of the first experimental high energy physics group in Colombia. For
this purpose, between 1986 and 1992 he participated in the E710 collider
experiment at Fermilab, studying elastic, diffractive scattering and the pbar-p
total cross section. This experiment had Jay Orear (Cornell) and Roy Rubinstein
(Fermilab) as spokespersons. He worked in this experiment as a Uniandes
professor (1989 - 1992) and as a postdoc with the Physics Department at
Fermilab (1986 - 1988), in areas of hardware (installation and calibration of
roman pot drift chambers), software (data acquisition and calibration) and
physics analysis, in particular elastic and diffractive analysis.
As a PhD student at
Purdue University, between 1980 and 1986 he participated in the HPW underground
detector, with Carlo Rubbia (Harvard), James Gaidos (Purdue) and David Cline
(Wisconsin) as spokespersons. This large water Cherenkov detector was an
experiment that searched for proton decay and did cosmic ray physics and
astrophysics. He worked on hardware and software (detector development,
testing, calibration and data acquisition) and physics analysis, in particular
atmospheric neutrinos.
TEACHING AND
OTHER ACTIVITIES
Teaching experience
since 1970, at Universidad del Cauca (1970 - 1975), University of Illinois
(1976 - 1978), Purdue University (1979 - 1986) and Universidad de los Andes
(1989 - present). Has taught or assisted in teaching many courses and
laboratories for engineering and science students and for undergraduate and
graduate physics students. Author of several writings, including a textbook in
photography. Has developed new curriculum and was one of the leading designers
of a physics PhD
program at Uniandes. He introduced in Colombia material developed at
Fermilab for the teaching of topics of modern physics at the high school level,
and developed two popular introductory-level courses (Uniandes CBU), one in modern physics and its technological
derivations, and one in cosmology.
Worked as
coordinator of high energy physics programs at the Centro Internacional de
Física (CIF) in Bogotá, Colombia, where he also was President of the
Association pro-CIF. At Uniandes he has held several administrative
responsibilities, including Coordinator of the High Energy Physics Group, and
has been member of several academic counseling bodies at Uniandes and elsewhere.
SELECTED
SCIENTIFIC ARTICLES
“Measurement of B0s mixing parameters from the flavor-tagged decay B0s → J/psi Phi”. D0 Collaboration. Phys.Rev.Lett.101:241801,2008 (USA). “Evidence for Production of Single Top Quarks and First Direct Measurement of [Vtb]”. D0 Collaboration. Phys.Rev.Lett.98:181802,2007 (USA). “First Direct Two-Sided Bound on the B0s Oscillation Frequency”. D0 Collaboration. Phys.Rev.Lett.97:021802,2006 (USA). “The Upgraded D0 Detector”. D0 Collaboration. Nucl.Instrum.Meth.A565:463-537,2006 (USA). “A Precision Measurement of the Mass of the Top Quark”. D0 Collaboration. Nature 429:638-642,2004 (Europe). “Observation and Properties of the X(3872) Decaying to J/Psi Pi+ Pi- in P-anti P Collisions at sqrt s = 1.96 TeV”. D0 Collaboration. Phys.Rev.Lett.93:162002,2004 (USA). “The B anti-B Production Cross-Section and Angular Correlations in P anti-P Collisions at sqrt s = 1.8 TeV”. D0 Collaboration. Phys.Lett.B487:264-272,2000 (USA).
"Search for
Charged Higgs Bosons in Decays of Top Quark Pairs". D0 Collaboration.
Phys.Rev.Lett. 82:4975-4980, 1999 (USA).
“Measurement of the Top Quark Mass in the Dilepton Channel”. D0 Collaboration. Phys.Rev.D60:052001,1999 (USA). “Determination of the Absolute Jet Energy Scale in the D0 Calorimeters”. D0 Collaboration. Nucl.Instrum.Meth.A424:352-394,1999 (USA). “Direct Measurement of the Top Quark Mass at D0”. D0 Collaboration. Phys.Rev.D58:052001,1998 (USA). “Measurement of the Top Quark Mass using Dilepton Events”. D0 Collaboration. Phys.Rev.Lett.80:2063-2068,1998 (USA).
"Search for
Diphoton Events with Large Missing Transverse Energy in pbar-p Collisions at
sqrt s = 1.8 TeV", D0 Collaboration. Phys.Rev. Lett. 78:2070-2074, 1997 (USA).
"Limits on WWZ
and WW Gamma Couplings from p-pbar -> e + Neutrino + Jet + Jet + X Events at
sqrt s = 1.8 TeV", D0 Collaboration, Phys.Rev.Lett. 79:1441-1446,1997 (USA).
“Measurement of the Top Quark Pair Production Cross Section in P anti-P Collisions”. D0 Collaboration. Phys.Rev.Lett.79:1203-1208,1997 (USA). “Direct Measurement of the Top Quark Mass”. D0 Collaboration. Phys.Rev.Lett.79:1197-1202,1997 (USA). “Measurement of the W Boson Mass”. D0 Collaboration. Phys.Rev.Lett.77:3309-3314,1996 (USA). "J/Psi
Production in P-Pbar Collisions at sqrt s = 1.8 TeV". D0 Collaboration.
Phys.Lett. B, 370:239-248,1996 (Europe).
"Search for
Light Top Squarks in P-Pbar Collisions at sqrt s = 1.8 TeV". D0
Collaboration. Phys.Rev.Lett. 76:2222-2227,1996 (USA).
"Search for
Right-Handed W Bosons and Heavy W-prime in P-Pbar Collisions at sqrt s = 1.8 TeV".
D0 Collaboration. Phys.Rev.Lett. 76:3271-3276,1996 (USA).
"Jet Production
via Strongly-Interacting Color-Singlet Exchange in Pbar-P Collisions". D0
Collaboration. Phys.Rev.Lett. 74:734-739,1996 (USA).
"W and Z Boson
Production in P-Pbar Collisions at sqrt s = 1.8 TeV". D0 Collaboration.
Phys.Rev.Lett. 75:1456-1461,1995 (USA).
"Search for
Squarks and Gluinos in P-Pbar Collisions at sqrt s = 1.8 TeV". D0
Collaboration. Phys.Rev.Lett. 75:618-623,1995 (USA).
"Observation
of the Top Quark". D0 Collaboration. Phys.Rev.Lett. 74:2632-2637,1995 (USA)
“Top Quark Search
with the D0 1992-1993 Data Sample”. D0 Collaboration. Phys.Rev.D52:4877-4919,1995
(USA)
"Inclusive Mu
and b-Quark Production Cross-Sections in P-Pbar Collisions at sqrt s = 1.8 TeV".
D0 Collaboration. Phys.Rev.Lett. 74:3548-3552,1995 (USA).
“Search for the Top Quark in P anti-P Collisions at sqrt s = 1.8 TeV”. D0 Collaboration. Phys.Rev.Lett.72:2138-2142,1994 (USA).
"A Search for
Jet Events with Rapidity Gaps in P-Pbar Collisions at sqrt s = 1.8 TeV".
D0 Collaboration. Phys.Rev.Lett. 72:2332-2336,1994 (USA).
"Diffraction
Dissociation in Pbar-P Collisions at sqrt s = 1.8 TeV". E710
Collaboration. Phys.Lett. B, vol. 301, 313,1993 (Europe).
"Measurement
of rho, the Ratio of the Real to Imaginary Part of the Pbar-P Forward Elastic
Scattering Amplitude, at sqrt s=1.8 TeV". E710 Collaboration. Phys.Rev.Lett.
68:2432-2436,1992 (USA).
"A Luminosity-Independent
Measurement of the Pbar-P Total Cross Section at sqrt s=1.8 TeV". E710
Collaboration. Phys.Lett. B. vol. 243, no. 1,2, p. 158,1990 (Europe).
"A Search for
Nucleon Decay with Multiple Muon Decays". HPW Collaboration. Phys.Lett. B,
vol. 224, no. 3, p. 348,1989 (Europe).
Link to a
detailed vita (in Spanish) is HERE.