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Title: Study of collisons of supersymmetric top Quark in the channel $$\tilde{t}$$ 1$$\tilde{t}$$ 1 -> e ±μ ∓$$\tilde{v}$$$\tilde{v}$$b$$\bar{b}$$ with the experience of D0 at the Tevatron. Callibration of the electromagnetic calorimeter at D0. (in FRENCH)

Abstract

Supersymmetry is one of the most natural extensions of the Standard Model. At low energy it may consist in the Minimal Supersymmetric Standard Model which is the framework chosen to perform the search of the stop with 350 pb -1 of data collected by D0 during the RunIIa period of the TeVatron. They selected the events with an electron, a muon, missing transverse energy and non-isolated tracks, signature for the stop decay in 3-body ($$\bar{t}$$ → bl$$\bar{v}$$). Since no significant excess of signal is seen, the results are interpreted in terms of limit on the stop production cross-sections, in such a way that they extend the existing exclusion region in the parameter space (m $$\bar{t}$$,m $$\bar{v}$$) up to stop masses of 168 (140) GeV for sneutrino masses of 50 (94) GeV. Finally because of the crucial role of the electromagnetic calorimeter, a fine calibration was performed using Z → e +e - events, which improved significantly the energy resolution.

Authors:
 [1]
+ Show Author Affiliations
  1. Univ. of the Mediterranean, Marseille (France)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
948177
Report Number(s):
FERMILAB-THESIS-2006-75
TRN: US0901582
DOE Contract Number:
AC02-07CH11359
Resource Type:
Thesis/Dissertation
Country of Publication:
United States
Language:
FRENCH
Subject:
43 PARTICLE ACCELERATORS; CALIBRATION; CALORIMETERS; CROSS SECTIONS; DECAY; ENERGY RESOLUTION; FERMILAB TEVATRON; PRODUCTION; STANDARD MODEL; SUPERSYMMETRY; T QUARKS; TRANSVERSE ENERGY

Citation Formats

Mendes, Aurelien. Study of collisons of supersymmetric top Quark in the channel $\tilde{t}$1$\tilde{t}$1 -> e±μ∓$\tilde{v}$$\tilde{v}$b$\bar{b}$ with the experience of D0 at the Tevatron. Callibration of the electromagnetic calorimeter at D0.. United States: N. p., 2006. Web. doi:10.2172/948177.
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Mendes, Aurelien. Study of collisons of supersymmetric top Quark in the channel $\tilde{t}$1$\tilde{t}$1 -> e±μ∓$\tilde{v}$$\tilde{v}$b$\bar{b}$ with the experience of D0 at the Tevatron. Callibration of the electromagnetic calorimeter at D0.. United States. doi:10.2172/948177.
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Mendes, Aurelien. Mon . "Study of collisons of supersymmetric top Quark in the channel $\tilde{t}$1$\tilde{t}$1 -> e±μ∓$\tilde{v}$$\tilde{v}$b$\bar{b}$ with the experience of D0 at the Tevatron. Callibration of the electromagnetic calorimeter at D0.". United States. doi:10.2172/948177. https://www.osti.gov/servlets/purl/948177.
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@article{osti_948177,
title = {Study of collisons of supersymmetric top Quark in the channel $\tilde{t}$1$\tilde{t}$1 -> e±μ∓$\tilde{v}$$\tilde{v}$b$\bar{b}$ with the experience of D0 at the Tevatron. Callibration of the electromagnetic calorimeter at D0.},
author = {Mendes, Aurelien},
abstractNote = {Supersymmetry is one of the most natural extensions of the Standard Model. At low energy it may consist in the Minimal Supersymmetric Standard Model which is the framework chosen to perform the search of the stop with 350 pb-1 of data collected by D0 during the RunIIa period of the TeVatron. They selected the events with an electron, a muon, missing transverse energy and non-isolated tracks, signature for the stop decay in 3-body ($\bar{t}$ → bl$\bar{v}$). Since no significant excess of signal is seen, the results are interpreted in terms of limit on the stop production cross-sections, in such a way that they extend the existing exclusion region in the parameter space (m$\bar{t}$,m$\bar{v}$) up to stop masses of 168 (140) GeV for sneutrino masses of 50 (94) GeV. Finally because of the crucial role of the electromagnetic calorimeter, a fine calibration was performed using Z → e+e- events, which improved significantly the energy resolution.},
doi = {10.2172/948177},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Oct 02 00:00:00 EDT 2006},
month = {Mon Oct 02 00:00:00 EDT 2006}
}
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Thesis/Dissertation:
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DOI:  10.2172/948177
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