14 research outputs found
Planta de producció d'àcid adípic
L'objectiu d'aquest projecte és el disseny d'una planta de producció d'àcid adípic a partir de la oxidació d'una mescla de ciclohexanol-ciclohexanona (KA oil) mitjançant àcid nítric. El projecte ha de complir la legislació vigent a part de ser viable tècnicament i econòmicament.Nota: Aquest document conté originàriament altre material i/o programari només consultable a la Biblioteca de Ciència i Tecnologia
Measurement of the W+W- Production Cross Section in ppbar Collisions at sqrt(s)=1.96 TeV using Dilepton Events
We present a measurement of the W+W- production cross section using 184/pb of
ppbar collisions at a center-of-mass energy of 1.96 TeV collected with the
Collider Detector at Fermilab. Using the dilepton decay channel W+W- ->
l+l-vvbar, where the charged leptons can be either electrons or muons, we find
17 candidate events compared to an expected background of 5.0+2.2-0.8 events.
The resulting W+W- production cross section measurement of sigma(ppbar -> W+W-)
= 14.6 +5.8 -5.1 (stat) +1.8 -3.0 (syst) +-0.9 (lum) pb agrees well with the
Standard Model expectation.Comment: 8 pages, 2 figures, 2 tables. To be submitted to Physical Review
Letter
Search for large extra dimensions in the production of jets and missing transverse energy in p(p)over-bar collisions at root s=1.96 TeV
We present the results of a search for new physics in the jets plus missing transverse energy data sample collected from 368 pb(-1) of p (p) over bar collisions at root s = 1.96 TeV recorded by the Collider Detector at Fermilab. We compare the number of events observed in the data with a data-based estimate of the standard model backgrounds contributing to this signature. We observe no significant excess of events, and we interpret this null result in terms of lower limits on the fundamental Planck scale for a large extra dimensions scenario
Measurement of the W+W- production cross section in p(p)over-bar collisions at root s=1.96 TeV using dilepton events
We present a measurement of the W+W- production cross section using 184 pb(-1) of p (p) over bar collisions at a center-of-mass energy of 1.96 TeV collected with the Collider Detector at Fermilab. Using the dilepton decay channel W+W-→ l(+)ν l(-)(ν) over bar, where the charged leptons can be either electrons or muons, we find 17 candidate events compared to an expected background of 5.0(-0.8)(+2.2) events. The resulting W+W- production cross-section measurement of σ(p (p) over bar → W+W-)=14.6(-5.1)(+5.8)(stat)(-3.0)(+1.8)(syst)± 0.9(lum) pb agrees well with the standard model expectation
Planta de producció d'àcid adípic
L’objectiu d’aquest projecte és el disseny d’una planta de producció d’àcid adípic a
partir de la oxidació d’una mescla de ciclohexanol-ciclohexanona (KA oil) mitjançant àcid nítric. El projecte ha de complir la legislació vigent a part de ser viable tècnicament i econòmicament.Nota: Aquest document conté originàriament altre material i/o programari només consultable a la Biblioteca de Ciència i Tecnologia
Planta de producció d'àcid adípic
L'objectiu d'aquest projecte és el disseny d'una planta de producció d'àcid adípic a partir de la oxidació d'una mescla de ciclohexanol-ciclohexanona (KA oil) mitjançant àcid nítric. El projecte ha de complir la legislació vigent a part de ser viable tècnicament i econòmicament.Nota: Aquest document conté originàriament altre material i/o programari només consultable a la Biblioteca de Ciència i Tecnologia
Search for long-lived doubly charged Higgs bosons in pp- collisions at √s=1.96TeV
We present a search for long-lived doubly charged Higgs bosons (H±±), with signatures of high ionization energy loss and muonlike penetration. We use 292 pb−1 of data collected in pp¯ collisions at √s=1.96 TeV by the CDF II detector at the Fermilab Tevatron. Observing no evidence of long-lived doubly charged particle production, we exclude H±±L and H±±R bosons with masses below 133 GeV/c2 and 109 GeV/c2, respectively. In the degenerate case we exclude H±± mass below 146 GeV/c2. All limits are quoted at the 95% confidence level
Search for anomalous kinematics in t(t)over-bar Dilepton events at CDF II
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 developed a new a priori technique designed to isolate
the subset in a data sample revealing the largest deviation from standard model
(SM) expectations and to quantify the significance of this departure. In the
four-variable space considered, no particular subset shows a significant
discrepancy and we find that the probability of obtaining a data sample less
consistent with the SM than what is observed is 1.0-4.5%.Comment: 14 pages, 2 figure
Search for a neutral higgs boson decaying to a W boson pair in pp¯ collisions at √s=1.96 TeV
We present the results of a search for standard model Higgs boson production with decay to WW*, identified through the leptonic final states e+e-vv,e±µ±vv and µ+µ-vv. This search uses 360 pb-1 of data collected from pp¯ collisions at sv=1.96 TeV by the upgraded Collider Detector at Fermilab (CDF II). We observe no signal excess and set 95% confidence level upper limits on the production cross section times branching ratio for the Higgs boson to WW* or any new scalar particle with similar decay products. These upper limits range from 5.5 to 3.2 pb for Higgs boson masses between 120 and 200 GeV/c2
Search for anomalous kinematics in tt dilepton events at CDF II
We report on a search for anomalous kinematics of tt¯ dilepton events in pp¯ collisions at √s=1.96 TeV using 193 pb−1 of data collected with the CDF II detector. We developed a new a priori technique designed to isolate the subset in a data sample revealing the largest deviation from standard model (SM) expectations and to quantify the significance of this departure. In the four-variable space considered, no particular subset shows a significant discrepancy, and we find that the probability of obtaining a data sample less consistent with the SM than what is observed is 1.0%-4.5%