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Updated: Jun 5, 2026
07:46
Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Color sextet scalars in early LHC experiments.
Edmond L Berger1, Qing-Hong Cao, Chuan-Ren Chen
1High Energy Division, Argonne National Laboratory, Argonne, IL 60439, USA.
Physical Review Letters
|January 15, 2011
Summary
We explore discovering exotic color sextet scalars via same-sign top quark pair production at the Large Hadron Collider (LHC). This research analyzes top quark polarization to identify scalar properties and distinguish between different scalar types.
Area of Science:
- High Energy Physics
- Particle Physics
- Collider Physics
Background:
- The Standard Model of particle physics does not predict exotic scalars.
- Same-sign top quark pair production is a rare process offering a window into new physics.
Purpose of the Study:
- To investigate the discovery potential of exotic color sextet scalars at the Large Hadron Collider (LHC).
- To perform the first phenomenological analysis of color sextet scalars, incorporating full top quark spin correlations.
Main Methods:
- Analysis of same-sign top quark pair production events.
- Inclusion of full top quark spin correlations in the theoretical framework.
- Simulation of early LHC running with 1 fb⁻¹ of integrated luminosity.
Main Results:
- Demonstration of measuring scalar mass and top quark polarization.
- Confirmation of the scalar resonance with limited integrated luminosity.
- Top quark polarization as a tool to distinguish between gauge triplet and singlet scalars.
Conclusions:
- Exotic color sextet scalars can be discovered at the LHC through same-sign top quark pair production.
- Top quark spin correlations are crucial for characterizing these new particles.
- The study provides a method to differentiate between various types of color sextet scalars.
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