Interplay between the charged Higgs and squark-gluino events at the LHC

Journal Article · Sun Aug 01 04:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.035022· OSTI ID:21432910

Bhattacharyya, Nabanita; Datta, Amitava ^[1]; Guchait, Monoranjan ^[2]; Maity, Manas ^[3]; Poddar, Sujoy ^[4]

---

1. Indian Institute of Science Education and Research, Kolkata, Mohanpur Campus, PO: BCKV Campus Main Office, Mohanpur 741252 (India)
2. Department of High Energy Physics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005 (India)
3. Department of Physics, Visva-Bharati, Santiniketan 731235 (India)
4. Netaji Nagar Day College, 170/436, N.S.C. Bose Road, Kolkata 700092 (India)

In some extensions of the standard model with extended Higgs sectors, events from new particle production may pass the selection criteria for Higgs search in different channels at the LHC--14 TeV and mimic Higgs signals. This intriguing possibility is illustrated by PYTHIA based simulations using several representative points in the parameter space of the minimal supersymmetric standard model (MSSM) including a point in the minimal supergravity model consistent with the dark matter (DM) relic density data. Our simulations explore the interplay between the charged Higgs signal and typical squark-gluino events. We argue that the standard selections like the one based on the polarization properties of the {tau}'s from charged Higgs decay, though adequate for handling the SM backgrounds, may not be very efficient in the presence of SUSY backgrounds. We then propose an alternative search strategy based on pure kinematics which sufficiently controls both the SM and the MSSM backgrounds. For charged Higgs masses (H{sup {+-}}) in the deep decoupling regime (600 GeV(less-or-similar sign)m{sub H}{sup {+-}}(less-or-similar sign)800 GeV) this method works well and extends the LHC reach close to 800 GeV for an integrated luminosity of 30 fb{sup -1} with or without the SUSY background. For a lighter charged Higgs a judicious combination of the old selections and some of the cuts proposed by us may disentangle the Higgs signal from the squark-gluino backgrounds quite effectively.

• OSTI ID: 21432910
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 82; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
BOSONS
CERN LHC
CYCLIC ACCELERATORS
DECAY
DECOUPLING
DENSITY
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
GEV RANGE
GEV RANGE 100-1000
GRAND UNIFIED THEORY
HIGGS BOSONS
HIGGS MODEL
LUMINOSITY
MASS
MATHEMATICAL MODELS
MATTER
NONLUMINOUS MATTER
OPTICAL PROPERTIES
PARTICLE DECAY
PARTICLE MODELS
PARTICLE PRODUCTION
PHYSICAL PROPERTIES
POLARIZATION
POSTULATED PARTICLES
QUANTUM FIELD THEORY
QUARKS
SIMULATION
SPARTICLES
STANDARD MODEL
STORAGE RINGS
SUPERGRAVITY
SUPERSYMMETRY
SYMMETRY
SYNCHROTRONS
TEV RANGE
TEV RANGE 10-100
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES