Revealing timid pseudo-scalars with taus at the LHC.
Giacomo Cacciapaglia1,2, Gabriele Ferretti3, Thomas Flacke4
11Université de Lyon, Lyon, France.
The European Physical Journal. C, Particles and Fields
|March 7, 2019
Summary
A new search for boosted di-tau resonances can detect light pseudo-scalar particles at the Large Hadron Collider (LHC). This method probes composite Higgs models, with most models detectable below 300 inverse femtobarns of integrated luminosity.
Area of Science:
- Particle physics
- High-energy physics
- Beyond Standard Model physics
Background:
- Searches for new light pseudo-scalar particles at the LHC are ongoing.
- Existing di-photon searches effectively cover pseudo-scalar masses above 65 GeV.
- A gap exists for lower pseudo-scalar masses, requiring new search strategies.
Purpose of the Study:
- To investigate the potential of a new search strategy for light pseudo-scalar particles.
- To test the sensitivity of this strategy on composite Higgs models with top partial compositeness.
- To determine the integrated luminosity required for probing these models.
Main Methods:
- Utilizing a new search for boosted di-tau resonances.
- Analyzing data from the Large Hadron Collider (LHC).
- Applying the strategy to a set of composite Higgs models.
Main Results:
- The lower mass window for light pseudo-scalars can be tested by boosted di-tau resonance searches.
- Most composite Higgs models with top partial compositeness can be probed.
- An integrated luminosity below 300 inverse femtobarns is sufficient for most models.
Conclusions:
- Boosted di-tau resonance searches offer a viable method for discovering light pseudo-scalar particles.
- This search strategy provides sensitivity to a significant portion of composite Higgs models.
- Future LHC runs with moderate integrated luminosity can explore these important theoretical frameworks.
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