1 Study of anomalous Quartic Gauge Coupling discovery potential for the samesign channel at the LHC ATLAS D esigned to take advantage of the unprecedented energy available at the LHC up to 14 ID: 815482
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Slide1
6/26/14
Mauricio Gonzalez-Aranda
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Study of anomalous Quartic Gauge Coupling discovery potential for the same-sign
channel
at the LHC
Slide2ATLAS
D
esigned to take advantage of the unprecedented energy available at the LHC (up to 14
TeV)The Standard Model
may break down at energies beyond the current energy frontier of about one teraelectronvolt (TeV) (set at the
Tevatron
)
Rather than focusing on a particular physical process, ATLAS is designed to measure the broadest possible range of signals.
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Slide3Experiment
Vector Boson Scattering was recently witnessed for the first time
W± W
± + j j
l± ν
l
±
ν
+ j j (best chance at witnessing VBS)
Current results from two protons colliding at 4
TeV each
Simulations of future runs will probe at 7
TeV
per proton
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Slide4Primary Goals
SM might be a part of a more complete theory that doesn’t break down at high energies
.Anomalous Quartic Gauge
Couplings (aQGC)Gauge: W bosons
Quartic: Four vector boson vertexAnomalous: may couple to new-physics terms at high energiesProbe the
Lagrangian
for new
physics terms beyond the SM at High Energies (14 TeV)
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Slide5My Project
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MadGraph
:
Simulate Signal with its new Physics Parameters and Backgrounds
Detector:
Simulate the Signal Showering and mixing with Background
Root:
Analyze data and look for a 5σ significance
Slide6Concerns?
None so far
Sources: C.
Gumpert. 2014. “Measurement of the Electroweak W ±W ±jj Production Cross Section with
ATLAS.” ICHEP. http://arxiv.org/pdf/1309.7452v1.pdf P
. Angeret al. 2014. ``
Same
Sign W±W± Production and Limits on Anomalous Quartic Gauge Couplings.”
ATLAS Note. http://en.wikipedia.org/wiki/ATLAS_experiment http://
www.atlas.ch/photos/atlas_photos/selected-photos/events/VP1-W-munu-2.
png
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Slide7Hiking in Lucerne
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