TeV-Scale String Resonances at Hadron Colliders

Abstract

We construct tree-level four-particle open-string amplitudes relevant to dilepton and diphoton production at hadron colliders. We expand the amplitudes into string resonance (SR) contributions and compare the total cross-section through the first SR with the $Z^{\prime }$ search at the Tevatron. We establish a current lower bound based on the CDF Run I results on the string scale to be about $1.1-2.1$ TeV, and it can be improved to about $1.5-3$ TeV with 2 fb${}^{-1}$. At the LHC, we investigate the properties of signals induced by string resonances in dilepton and diphoton processes. We demonstrate the unique aspects of SR-induced signals distinguishable from other new physics, such as the angular distributions and forward-backward asymmetry. A 95% C.L. lower bound can be reached at the LHC for $M_S>8.2-10$ TeV with an integrated luminosity of 300 fb${}^{-1}$. We emphasize the generic features and profound implications of the amplitude construction.

25 pages, 8 figures

References in corpus (4)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Multi-Parton Amplitudes in Gauge Theories
• Z-prime Gauge Bosons at the Tevatron
• Similarity between Kaluza-Klein and Open-string amplitudes in Diphoton Production

Cited by in corpus (36)

• Black Holes and Quantum Gravity at the LHC
• Physics searches at the LHC
• Dijet signals for low mass strings at the LHC
• Direct Production of Lightest Regge Resonances
• Jet signals for low mass strings at the LHC
• Direct photons as probes of low mass strings at the LHC
• The Weinberg Operator and a Lower String Scale in Orientifold Compactifications
• Stringy explanation of $b\to s{\ell }^{+}{\ell }^{-}$ anomalies
• Z'-gauge Bosons as Harbingers of Low Mass Strings
• What Black Holes Can Teach Us
• Study of highly-excited string states at the Large Hadron Collider
• Discovery in Drell-Yan Processes at the LHC
• Asymptotic safety and Kaluza-Klein gravitons at the LHC
• String Resonances at Hadron Colliders
• Higher Level String Resonances in Four Dimensions
• Randall-Sundrum and Strings
• Probing Quantum Geometry at LHC
• D6-Brane Model Building on Z(2)xZ(6): MSSM-like and Left-Right Symmetric Models
• TeV-Scale strings
• Tensor Reggeons from Warped Space at the LHC
• Open-string singlet interaction as pomeron in elastic $pp,p\bar{p}$ scattering
• Revisiting light stringy states in view of the 750 GeV diphoton excess
• Top quark physics in the Vector Color-Octet Model
• Contact interactions in low scale string models with intersecting $D6$-branes
• From Type II string theory towards BSM/dark sector physics
• Constraints on String Resonance Amplitudes
• String Theory at LHC Using Higgs Production and Decay From String Balls
• Remarks on Limits on String Scale from Proton Decay and Low-Energy amplitudes in Braneworld Scenario
• Production of light stringy states
• TeV-Scale Stringy Signatures at the Electron-positron Collider
• Constraints on antisymmetric tensor fields from Bhabha scattering
• String resonances at the Large Hadron Collider
• Particle Phenomenology of Gravitational Events at the TeV Scale
• Manifestations of String Theory in Astrophysical Data and at the LHC
• Lifetimes of light stringy states
• One-loop adjoint masses for branes at non-supersymmetric angles