Jet signals for low mass strings at the large hadron collider

Area of Science:

• High Energy Physics
• String Theory
• Particle Physics

Background:

• Superstring theory posits a mass scale (M{s}) that can be as low as a few TeV in universes with large extra dimensions.
• Searching for new physics beyond the Standard Model is a primary goal of the Large Hadron Collider (LHC).

Purpose of the Study:

• To propose a search strategy for Regge excitations of fundamental strings at the LHC.
• To investigate potential deviations from Standard Model predictions through specific particle interactions.

Main Methods:

• Analyzing the process pp-->gamma+jet at the LHC.
• Focusing on single photon production in gluon fusion (gg-->gammag) with open string states in intermediate channels.
• Considering photon mixing with the baryon number gauge boson.

Main Results:

• The proposed search can probe superstring theory mass scales (M{s}) as high as 3.3 TeV.
• Even small photon-baryon number gauge boson mixing allows for significant deviations from Standard Model physics to be detected.
• 100 fb{-1} of LHC data could provide a 5-sigma significance for these deviations.

Conclusions:

• The search for Regge excitations of fundamental strings offers a viable method to probe high mass scales predicted by superstring theory.
• This approach is largely independent of specific string compactification models.
• The LHC has the potential to discover evidence of physics beyond the Standard Model through this proposed search.