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Hypercharged Anomaly-Mediated Introduction HCAMSB Model - - PowerPoint PPT Presentation

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC S. Raj Hypercharged Anomaly-Mediated Introduction HCAMSB Model Supersymmetry Breaking at the LHC HCAMSB Spectrum HCAMSB @ LHC Summary PHENO 09 Shibi Rajagopalan

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

PHENO ’09 Shibi Rajagopalan

shibi@nhn.ou.edu

University of Oklahoma Homer L. Dodge Dept. of Physics and Astronomy

May 12, 2009

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

Introduction

authors

◮

Hypercharged Anomaly Mediation Radovan Dermisek, Herman Verlinde, Lian-Tao Wang

Phys.Rev.Lett.100:131804,2008 arXiv:0711.3211 [hep-ph]

◮

Prospects for Hypercharged Anomaly-Mediated SUSY Breaking at the LHC

  • H. Baer, R. Dermisek, S. Rajagopalan, H. Summy

On arXiv soon

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

Introduction

Overview

◮

Describe the HCAMSB model

◮

Look at the mass spectrum

◮

(preliminary) Event generation for the LHC

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Anomaly Mediation

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SLIDE 5

Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Anomaly Mediation

Soft Parameters in SUGRA Models

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Anomaly Mediation

Soft Parameters in SUGRA Models

Visible Sector

(MSSM)

Hidden Sector

(SM Gauge Singlets)

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SLIDE 7

Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Anomaly Mediation

Soft Parameters in SUGRA Models

Visible Sector

(MSSM)

  • - - - - - - - -

Hidden Sector

(SM Gauge Singlets)

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Anomaly Mediation

Soft Parameters in SUGRA Models

Visible Sector

(MSSM)

tree-level

  • - - - - - - - -

gravitational int.

Hidden Sector

(SM Gauge Singlets)

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Anomaly Mediation

Soft Parameters in SUGRA Models

Visible Sector

(MSSM)

tree-level

  • - - - - - - - -

gravitational int.

Hidden Sector

(SM Gauge Singlets) +

additional 1-loop contribution

(super-Weyl anomaly)

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SLIDE 10

Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Anomaly Mediation

Soft Parameters in SUGRA Models

Visible Sector

(MSSM)

tree-level

  • - - - - - - - -

gravitational int.

Hidden Sector

(SM Gauge Singlets) +

additional 1-loop contribution

(super-Weyl anomaly)

Tree-level suppression ⇐ ⇒ ExtraDimensions

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Anomaly Mediation

AMSB is nice because. . .

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Anomaly Mediation

AMSB is nice because. . .

◮ all soft terms depend on single parameter: m3/2 ◮ solves SUSY flavor and CP problems ◮ soft contributions are scale invariant

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Anomaly Mediation

AMSB is nice because. . .

◮ all soft terms depend on single parameter: m3/2 ◮ solves SUSY flavor and CP problems ◮ soft contributions are scale invariant

However AMSB alone is problematic:

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Anomaly Mediation

AMSB is nice because. . .

◮ all soft terms depend on single parameter: m3/2 ◮ solves SUSY flavor and CP problems ◮ soft contributions are scale invariant

However AMSB alone is problematic:

◮ well known that sleptons are tachyonic: m2 sleptons < 0 ◮ Adhoc m0 bumps up those masses

⇒ soft terms no longer RGE invariant

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

minimal AMSB

Soft Contributions in AMSB Models Parameter Space: (m0, ) m3/2, tanβ, sign(µ) RGE’s: Ma = bag 2

a

16π2 m3/2, a = 1, 2, 3

m2

i = − 1 4{ dγ dg βg + dγ df βf }m3/2

Af = βf

f m3/2

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Hypercharged Mediation

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Hypercharged Mediation

This mediation of SUSY-breaking relies on a few things:

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Hypercharged Mediation

This mediation of SUSY-breaking relies on a few things:

◮ MSSM & hidden sectors separated by bulk ◮ hidden brane in strongly-warped region of manifold

⇒ filters tree-level gravitational effects

◮ visibile (V) & hidden (H) branes carry U(1) charges

⇒ gauge bosons: AV and AH

◮ F-type SUSY breaking happens on the hidden U(1) brane

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Hypercharged Mediation

RR p-forms traverse the bulk They couple to gauge fields by linear C-S-couplings

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Hypercharged Mediation

RR p-forms traverse the bulk They couple to gauge fields by linear C-S-couplings KK reduction ⇓

LRR = C ∧ (dAV + dAH) +

1 2µ2 |dC|2

equivalent to Stuckelberg mass; µ ∼ string scale

⇓ (AV + AH)

integrates out

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Hypercharged Mediation

RR p-forms traverse the bulk They couple to gauge fields by linear C-S-couplings KK reduction ⇓

LRR = C ∧ (dAV + dAH) +

1 2µ2 |dC|2

equivalent to Stuckelberg mass; µ ∼ string scale

⇓ (AV + AH)

integrates out

⇓

Low-energy combination:

A1 = (AH − AV )

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Hypercharged Mediation

RR p-forms traverse the bulk They couple to gauge fields by linear C-S-couplings KK reduction ⇓

LRR = C ∧ (dAV + dAH) +

1 2µ2 |dC|2

equivalent to Stuckelberg mass; µ ∼ string scale

⇓ (AV + AH)

integrates out

⇓

Low-energy combination:

A1 = (AH − AV )

A1 is the Hypercharge Boson

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Hypercharged Mediation

F-terms give mass of visible sector bino:

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Hypercharged Mediation

F-terms give mass of visible sector bino:

◮ 1-loop bino mass contrib. to hypercharged particles ◮ 2-loop to other gauginos (no direct coupling)

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Hypercharged Mediation

F-terms give mass of visible sector bino:

◮ 1-loop bino mass contrib. to hypercharged particles ◮ 2-loop to other gauginos (no direct coupling) ◮ Correction to M1 RGE

→ M1 = ˜ M1 + b1g 2

1

16π2 m3/2

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB

Hypercharged Mediation

F-terms give mass of visible sector bino:

◮ 1-loop bino mass contrib. to hypercharged particles ◮ 2-loop to other gauginos (no direct coupling) ◮ Correction to M1 RGE

→ M1 = ˜ M1 + b1g 2

1

16π2 m3/2

Parameterize Hypercharged contrib. relative to AMSB’s

α =

˜ M1 m3/2

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

Anomaly and HC Mediation

Things to note:

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

Anomaly and HC Mediation

Things to note:

Pure Anomaly Mediation

some problems gone:

Pure HC Mediation

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

Anomaly and HC Mediation

Things to note:

Pure Anomaly Mediation

some problems gone:

◮ tachyonic sleptons

Pure HC Mediation

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

Anomaly and HC Mediation

Things to note:

Pure Anomaly Mediation

some problems gone:

◮ tachyonic sleptons

Pure HC Mediation

◮ bino mass can fix this

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

Anomaly and HC Mediation

Things to note:

Pure Anomaly Mediation

some problems gone:

◮ tachyonic sleptons

Pure HC Mediation

◮ bino mass can fix this ◮ RGE running to TeV scale

⇒ m˜

t1 < 0

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SLIDE 32

Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

Anomaly and HC Mediation

Things to note:

Pure Anomaly Mediation

some problems gone:

◮ tachyonic sleptons ◮ fixed by

anomalous dimension

Pure HC Mediation

◮ bino mass can fix this ◮ RGE running to TeV scale

⇒ m˜

t1 < 0

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

Anomaly and HC Mediation

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB Spectrum

ISAJET 7.79

  • 0.2
  • 0.15
  • 0.1
  • 0.05

0.05 0.1 0.15

α

1000 2000 3000

[GeV]

m~

eR

m~

uR

m~

eL

m~

g

m~

uL

mH,A µ m~

t1

m~

b1

m ~

Z1, m ~ W1

tan(β) = 10, m3/2 = 50 TeV, mt = 172.6

Tachyonic Particles

*left-right split AMSB

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB Spectrum

ISAJET 7.79

  • 0.2
  • 0.15
  • 0.1
  • 0.05

0.05 0.1 0.15

α

1000 2000 3000

[GeV]

m~

g

µ m~

t1

m~

b1

m ~

Z1, m ~ W1

tan(β) = 10, m3/2 = 50 TeV, mt = 172.6

Tachyonic Particles

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB at the LHC

  • 0.2
  • 0.1

0.1 0.2

α

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

BF{~ b1 -> quark + ~ Z/~ W}

~ b1 -> b + ~ Z1 ~ b1 -> b + ~ Z2 ~ b1 -> b + ~ Z3 ~ b1 -> t + ~ W1 ~ b1 -> t + ~ W2

Branching Fraction vs. α

m3/2 = 50 TeV, tanβ = 10, mt = 172.6 GeV

Tachyonic Particles

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB at the LHC

  • 0.2
  • 0.1

0.1 0.2

α

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

BF{~ t1 -> quark + ~ Z/~ W}

~ t1 -> t + ~ Z1 ~ t1 -> t + ~ Z2 ~ t1 -> t + ~ Z3 ~ t1 -> b + ~ W1 ~ t1 -> b + ~ W2

Branching Fraction vs. α

m3/2 = 50 TeV, tanβ = 10, mt = 172.6 GeV

Tachyonic Particles

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB at the LHC

signatures

  • 0.2
  • 0.1

0.1 0.2

α

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

BF{~ b1 -> quark + ~ Z/~ W}

~ b1 -> b + ~ Z1 ~ b1 -> b + ~ Z2 ~ b1 -> b + ~ Z3 ~ b1 -> t + ~ W1 ~ b1 -> t + ~ W2

Branching Fraction vs. α

m3/2 = 50 TeV, tanβ = 10, mt = 172.6 GeV Tachyonic Particles

  • 0.2
  • 0.1

0.1 0.2

α

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

BF{~ t1 -> quark + ~ Z/~ W}

~ t1 -> t + ~ Z1 ~ t1 -> t + ~ Z2 ~ t1 -> t + ~ Z3 ~ t1 -> b + ~ W1 ~ t1 -> b + ~ W2

Branching Fraction vs. α

m3/2 = 50 TeV, tanβ = 10, mt = 172.6 GeV Tachyonic Particles

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB at the LHC

signatures

  • 0.2
  • 0.1

0.1 0.2

α

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

BF{~ b1 -> quark + ~ Z/~ W}

~ b1 -> b + ~ Z1 ~ b1 -> b + ~ Z2 ~ b1 -> b + ~ Z3 ~ b1 -> t + ~ W1 ~ b1 -> t + ~ W2

Branching Fraction vs. α

m3/2 = 50 TeV, tanβ = 10, mt = 172.6 GeV Tachyonic Particles

˜ b1 decays: ˜ b1 → b + ˜ Z1, ˜ Z2, ˜ Z3 ˜ b1 → t + ˜ W1 ˜ t1 decays: ˜ t1 → t + ˜ Z1, ˜ Z2, ˜ Z3 ˜ t1 → b + ˜ W1

  • 0.2
  • 0.1

0.1 0.2

α

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

BF{~ t1 -> quark + ~ Z/~ W}

~ t1 -> t + ~ Z1 ~ t1 -> t + ~ Z2 ~ t1 -> t + ~ Z3 ~ t1 -> b + ~ W1 ~ t1 -> b + ~ W2

Branching Fraction vs. α

m3/2 = 50 TeV, tanβ = 10, mt = 172.6 GeV Tachyonic Particles

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB at the LHC

signatures

  • 0.2
  • 0.1

0.1 0.2

α

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

BF{~ b1 -> quark + ~ Z/~ W}

~ b1 -> b + ~ Z1 ~ b1 -> b + ~ Z2 ~ b1 -> b + ~ Z3 ~ b1 -> t + ~ W1 ~ b1 -> t + ~ W2

Branching Fraction vs. α

m3/2 = 50 TeV, tanβ = 10, mt = 172.6 GeV Tachyonic Particles

˜ b1 decays: ˜ b1 → b + ˜ Z1, ˜ Z2, ˜ Z3 ˜ b1 → t + ˜ W1 high b-jet mult. E miss

T

isolated leptons ˜ W1 tracks ˜ t1 decays: ˜ t1 → t + ˜ Z1, ˜ Z2, ˜ Z3 ˜ t1 → b + ˜ W1 high b-jet mult. E miss

T

isolated leptons ˜ W1 tracks

  • 0.2
  • 0.1

0.1 0.2

α

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

BF{~ t1 -> quark + ~ Z/~ W}

~ t1 -> t + ~ Z1 ~ t1 -> t + ~ Z2 ~ t1 -> t + ~ Z3 ~ t1 -> b + ~ W1 ~ t1 -> b + ~ W2

Branching Fraction vs. α

m3/2 = 50 TeV, tanβ = 10, mt = 172.6 GeV Tachyonic Particles

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB at the LHC

chargino tracks

m ˜

W1 ∼ m˜ Z1 :

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB at the LHC

chargino tracks

m ˜

W1 ∼ m˜ Z1 : Wino-like ↔ light nearly degenerate: ∆m ∼ 200MeV ˜ W +

1 →

π+ + ˜ Z1

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB at the LHC

chargino tracks

m ˜

W1 ∼ m˜ Z1 : Wino-like ↔ light nearly degenerate: ∆m ∼ 200MeV ˜ W +

1 →

π+ + ˜ Z1 ↓ ց soft E miss

T

possible track with no calorimeter signal

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB at the LHC

chargino tracks

10 20 30 40 50

R [cm]

1 10 100 1000

dσ/dR [fb cm

  • 1]

Point 1 α = 0.025, τ = 1.4905e-10 s

Radial Track Length Distribution

η < 1

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB at the LHC

chargino tracks

1 2

R [ x 10

  • 1 cm]

1 10 100

dσ/dR [fb cm

  • 1]

Point 2 α = 0.195, τ = 7.4154e-15 s

Radial Track Length Distribution

η < 1

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB at the LHC

chargino tracks

10 20 30 40 50

R [cm]

1 10 100 1000

dσ/dR [fb cm

  • 1]

Point 1 α = 0.025, τ = 1.4905e-10 s

Radial Track Length Distribution

η < 1

Atlas Detector

◮ innermost system

3 pixel layers 5,8,12.5 cm

◮ intermediate system

4 barrel layers 30 - 50 cm

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

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Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB at the LHC

Event Generation - ISAJET

2 4 6 8

nb

0.001 0.01 0.1 1 10 100 1000 10000 1e+05

σ (fb)

HCAMSB1 HCAMSB2 Thu May 7 14:54:50 2009

Cuts:

n(jets) ≥ 4 E miss

T

> max(100GeV , 0.2Meff ) ET(j1, j2, j3, j4) > 100,50,50,50 GeV ST > 0.2

500 1000 1500

ET

miss (GeV) 0.001 0.01 0.1 1 10 100 1000 10000 1e+05 1e+06

dσ/dET

miss (fb/GeV) HCAMSB1 HCAMSB2

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB at the LHC

Event Generation - ISAJET

2 4 6 8

nl

0.001 0.01 0.1 1 10 100 1000 10000

σ (fb)

HCAMSB1 HCAMSB2 Thu May 7 14:56:15 2009 1000 2000 3000 4000

AT (GeV)

0.0001 0.001 0.01 0.1 1 10

dσ/dAT (fb/GeV)

HCAMSB1 HCAMSB2

AT = E miss

T

+ ΣET(jets)+ ΣET(isolated leptons)

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

Summary

◮ Described hypercharged anomaly mediation ◮ HCAMSB spectrum: lead to decay channels and signatures ◮ Working on event generation:

cut optimization invariant mass distributions reach

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

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Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

backup

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB Spectrum

Constraining α and m3/2

  • 0.2
  • 0.1

0.1 0.2 100 200

m3/2 [TeV]

1 TeV 2 TeV 3 TeV 1 TeV 2 TeV 3 TeV ex. ex. ex.

m3/2 vs. α

tan(β) = 10

  • 0.2
  • 0.1

0.1 0.2

50 100 150

m3/2 [TeV] α α

ex. ex. ex.

~ uL ~ g ~ t1 500 GeV ~ t1 1 TeV ~ eL 350 GeV

m3/2 vs. α

tan(β) = 40

LEP2 m~

W1 > 91.9 GeV

LEP2 m~

W1 > 91.9 GeV

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

Constraining α and m3/2

indirect limits

  • 0.2
  • 0.1

0.1 0.2

∆aµ

m3/2 = 50 TeV, tan(β) = 10

  • 0.1

0.1

m3/2 = 50 TeV, tan(β) = 40

  • 0.2
  • 0.1

0.1

∆aµ

m3/2 = 100 TeV, tan(β) = 10

  • 0.1

0.1

m3/2 = 100 TeV, tan(β) = 40

∆aµ vs. α

1.25e-09 5e-09 3e-10 1.25e-09

∆aµ Excluded

α α α α

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

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Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

Constraining α and m3/2

indirect limits

  • 0.2

0.2 0.0002 0.0004

BF(b -> sγ)

m3/2 = 50 TeV, tanβ = 10

  • 0.2

0.2

0.0001 0.0002 0.0003 0.0004 0.0005

m3/2 = 50 TeV, tanβ = 40

  • 0.2

0.2 0.0003 0.0004

BF(b -> sγ)

m3/2 = 100 TeV, tanβ = 10

  • 0.2

0.2

0.0002 0.0003 0.0004

m3/2 = 100 TeV, tanβ = 40

α α α α

BF Excluded BF Limits Experiment BF Limits SM

BF(b -> sγ) vs. α

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Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB at the LHC

500 1000 1500

pT(j1) (GeV)

0.0001 0.001 0.01 0.1 1 10 100

dσ/dpT(j1) (fb/GeV)

HCAMSB1 HCAMSB2 Thu May 7 14:56:52 2009 2 4 6 8 10 12 14 16 18 20

nj

0.001 0.01 0.1 1 10 100 1000 10000

σ (fb)

HCAMSB1 HCAMSB2

slide-55
SLIDE 55

Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB Spectrum

  • 0.2
  • 0.15
  • 0.1
  • 0.05

0.05 0.1 0.15

α

1000 2000 3000

[GeV]

m~

eR

m~

uR

m~

eL

m~

g

m~

uL

mH,A µ m~

t1

m~

b1

m ~

Z1, m ~ W1

tan(β) = 10, m3/2 = 50 TeV, mt = 172.6

Tachyonic Particles

slide-56
SLIDE 56

Hypercharged Anomaly-Mediated Supersymmetry Breaking at the LHC

  • S. Raj

Introduction HCAMSB Model HCAMSB Spectrum HCAMSB @ LHC Summary

HCAMSB Spectrum

  • 0.06
  • 0.04
  • 0.02

0.02 0.04 0.06

m0/m3/2

1000 2000 3000

[GeV]

m~

eR, m~ eL

m~

uR, m~ uL

m~

g

mHA µ m~

t1

m~

b1

m ~

W1, m ~ Z1

tan(β)=10, m3/2 = 50 TeV, mt=172.6 GeV