Discriminating Electroweak-ino Parameter Ordering at the LHC and Its Impact on LFV Studies

Abstract

Current limit on the dark matter relic abundance may suggest that $|\mu |$ should be smaller than prediction in the minimal supergravity scenario (mSUGRA) for moderate $m_0$ and $m_{1/2}$. The electroweak-ino parameter $M_1,M_2$ and $|\mu |$ are then much closer to each other. This can be realized naturally in the non-universal Higgs mass model (NUHM). Since the heaviest neutralino (${\tilde{\chi }}_4^0$) and chargino (${\tilde{\chi }}_2^{\pm }$) have significant gaugino components, they may appear frequently in the left-handed squark decay and then be detectable at the LHC. In such a case, we showed that the hierarchy of $M_1,M_2$ and $|\mu |$ can be determined. In the light slepton mass scenario with non-vanishing lepton-flavor violation (LFV) in the right-handed sector, NUHM with small $|\mu |$ corresponds to region of parameter space where strong cancellation among leading contributions to $Br(\mu \to e\gamma )$ can occur. We showed that determination of electroweak-ino hierarchy plays a crucial role in resolving cancellation point of $Br(\mu \to e\gamma )$ and determination of LFV parameters. We also discussed test of the universality of the slepton masses at the LHC and the implications to SUSY flavor models.

34 pages, 16 figures

References in corpus (56)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• Type Ia Supernova Discoveries at z>1 From the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution
• Final Report of the Muon E821 Anomalous Magnetic Moment Measurement at BNL
• A direct empirical proof of the existence of dark matter
• HERWIG 6.5: an event generator for Hadron Emission Reactions With Interfering Gluons (including supersymmetric processes)
• Search for the Standard Model Higgs Boson at LEP
• Cosmological Results from High-z Supernovae
• New Constraints on ${\Omega }_M$, ${\Omega }_{\Lambda }$, and w from an Independent Set of Eleven High-Redshift Supernovae Observed with HST
• Cosmological Constraints from the SDSS Luminous Red Galaxies
• A complete analysis of FCNC and CP constraints in general SUSY extensions of the standard model
• Measuring masses of semi-invisibly decaying particles pair produced at hadron colliders
• Lepton-Flavor Violation via Right-Handed Neutrino Yukawa Couplings in Supersymmetric Standard Model
• The Neutralino Relic Density in Minimal N=1 Supergravity
• m_T2 : the truth behind the glamour
• New Limit for the Family-Number Non-conserving Decay mu+ to e+_gamma
• A Search for WIMPs with the First Five-Tower Data from CDMS
• Physics Interplay of the LHC and the ILC
• Detailed calculation of lepton flavor violating muon-electron conversion rate for various nuclei
• Mass Matrix Models: The Sequel
• Supersymmetric Dark Matter in Light of WMAP
• Precision SUSY Measurements at LHC
• Solar and Atmospheric Neutrino Oscillations and Lepton Flavor Violation in Supersymmetric Models with Right-handed Neutrinos
• Direct, Indirect and Collider Detection of Neutralino Dark Matter In SUSY Models with Non-universal Higgs Masses
• The MSSM Parameter Space with Non-Universal Higgs Masses
• Improved predictions for g-2 of the muon and α_{\rm QED}(M_Z^2)
• Exploration of the MSSM with Non-Universal Higgs Masses
• Measurements of Masses in SUGRA Models at LHC
• Neutralino relic density in minimal supergravity with co-annihilations
• Measuring superparticle masses at hadron collider using the transverse mass kink
• Measuring sparticle masses in non-universal string inspired models at the LHC
• New Search for tau -> mu gamma and tau -> e gamma Decays at Belle
• Determining the spin of supersymmetric particles at the LHC using lepton charge asymmetry
• Nucleon sigma term and strange quark content from lattice QCD with exact chiral symmetry
• The muon g-2 and the bounds on the Higgs boson mass
• Neutralino Cold Dark Matter in a One Parameter Extension of the Minimal Supergravity Model
• Supersymmetry and the LHC Inverse Problem
• Measurement of SUSY masses via cascade decays for SPS 1a
• Neutrino masses, muon g-2, and lepton-flavour violation in the supersymmetric see-saw model
• Search for Lepton Flavor Violation in the Decay tau -> electron gamma
• Scrutinizing LSP Dark Matter at the LHC
• Varying the Universality of Supersymmetry-Breaking Contributions to MSSM Higgs Boson Masses
• Measuring Supersymmetry
• Lepton Mass Matrix Models
• The Standard Model and Supersymmetric Flavor Puzzles at the Large Hadron Collider
• Collider signals and neutralino dark matter detection in relic-density-consistent models without universality
• Supersymmetric seesaw type II: CERN LHC and lepton flavour violating phenomenology
• Study of the slepton non-universality at the CERN Large Hadron Collider
• Measuring Smuon-Selectron Mass Splitting at the LHC and Patterns of Supersymmetry Breaking
• Slepton Oscillation at Large Hadron Collider
• Searches for lepton flavor violating decays ${\tau }^{\pm }\to {\ell }^{\pm }\gamma$, ${\tau }^{\pm }\to {\ell }^{\pm }{P}^0$ (where ${\ell }^{-}=e^{-},{\mu }^{-}$, and $P^0$ = ${\pi }^0,\eta ,{\eta }^{\prime }$) at B-Factories: Status and Combinations
• Prospects for SUSY searches in CMS and ATLAS

Cited by in corpus (9)

• μto e in R-symmetric Supersymmetry
• The race for supersymmetry: using mT2 for discovery
• Flavored Gauge-Mediation
• Slepton mass-splittings as a signal of LFV at the LHC
• Implications of CDMS II result on Higgs sector in the MSSM
• Kinematic Edges with Flavor Splitting and Mixing
• Resolving the existence of Higgsinos in the LHC inverse problem
• Testing the Nambu-Goldstone Hypothesis for Quarks and Leptons at the LHC
• Flavored Co-annihilations