Extra Dimensions

Tutorial on Extra Dimensions: Feb. 26th 2002

Activities:

Large Extra Dimensions:  jets + Etmiss

L. Vacavant and I. Hinchliffe:
 - ATLAS note ATLAS-PHYS-2000-016
 -  Signals of Models with Large Extra Dimensions in ATLAS, 
      J. Phys., G : 27 (2001) no.8, pp.1839-50 ( or SN-ATLAS-2001-005)

(see also bulk scalars, below)

Large extra dimensions: Virtual Graviton Exchange

V. Kabachenko, A. Miagkov, A. Zenin:
  Sensitivity of the ATLAS detector to extra dimensions in di-photon and di-lepton production processes - ATL-PHYS-2001-012
update on dilepton and diphoton signals- Oct. 2002 meeting
Graviton and Vector boson : presentation at group meeting, 9 feb 2000
 ttbar production from virtual graviton exchange
       presentation at exotic group meeting, Feb 21, 2001
       presentation at Higgs and Supersymmetry conference, March 2001
 

Z. Usubov
graviton exchange on dijet production, Oct. 2002 meeting

Narrow Graviton Resonances

B.C. Allanach, K. Odagiri, M.A. Parker and B.R. Webber
  - Searching for Narrow Graviton Resonances with the ATLAS Detector at the Large Hadron Collider hep-ph/0006114  (JHEP-09(2000)019) or ATL-PHYS-2000-029

 - Exploring Small Extra Dimensions at the LHC ATL-PHYS-2002-031

Coupling Unification

B. Laforge, S. Ferrag, M. Escalier : 
Testing extra-dimensions by RGE - see presentation at Lund, Sept. 2001 
            (also hep-ph/0110217)
Sensitivity of alpha_s to extra dimensions - June 2002 meeting
Dijet production in presence of extra dimensions - Oct. 2002 meeting
Improvement in resonance search in di-jet channels - Feb. 2003 meeting

C. Alexa
Progress report heavy lepton production with power law running of alpha_s, 
group meeting, June 2002
group meeting, oct. 2002

Radion

G. Azuelos, D. Cavalli, H. Przysiezniak and L. Vacavant 
Search for the Randall Sundrum Radion using the ATLAS detector,  
in Les Houches  proceedings, 2002: hep-ph/0204031
 and group meeting, Feb 2002
 revised version: EPJDirect C, 4, C16, (2002) 1 or SN-ATLAS-2002-019

Other Bulk Scalars

P-H Beauchemin, G. Azuelos and C. Burgess
Phenomenological Constraints on Extra_dimensional Scalars
 SN-ATLAS-2004-037  or J. Phys. G: Nucl. Part. Phys. 31 (2005) 1-19

P-H Beauchemin, G. Azuelos and C. Burgess
Dimensionless Coupling of Bulk Scalars at the LHC
 SN-ATLAS-2004-044, (hep-ph/0407196),  or J. Phys. G: Nucl. Part. Phys. 30 N17

O. Ola
Full simulation study, June 23, 2004

Gauge Excitations

G. Polesello and G. Azuelos
 Gauge excitations in TeV-1 scale extra dimensions 
 SN-ATLAS-2003-023 or EPJ Direct C (2004) 10.1140/epjcd/s2004-02-001-y

M. Petra and G. Polesello
KK excitation of the W boson
SN-ATLAS-2003-036 or   EPJ Direct, C: 32 Sup.2 (2004) pp.55-67


S. Ferrag and G. Polesello
                KK excitations of gluons, Dec 2003 meeting

Black Holes

Harris, C M; Palmer, M J; Parker, M A; Richardson, P; Sabetfakhri, A; Webber, B R
Exploring Higher Dimensional Black Holes at the Large Hadron Collider ATL-PHYS-2004-033

Tanaka, J; Yamamura, T; Asai, S; Kanzaki, J :
           Study of Black Holes with the ATLAS detector at the LHC -- ATL-PHYS-2003-037

J. Grain
Search for Gauss-Bonnet Black Holes, Dec. 2003 meeting

TransPlanckian Elastic Collisions

G. Azuelos
First look at TransPlanckian elastic collisions in ATLAS, Oct. 2002 meeting

Singlet Neutrino

K. Assamagan and A. Deandrea
The hadronic tau decay of a heavy charged Higgs in models with singlet neutrino in large extra dimensions. ATL-PHYS-2001-019

Dark energy

K. Baker
Dark Energy Signals, Dec. 2003 meeting
Cosmological Constant Signatures in ATLAS, at Sept. 2003 meeting, in Prague
  also: 4 Dec 2003 and June 23, 2004

Universal Extra Dimensions

PH Beauchemin
Dijets in a scenario of Universal Extra Dimensions , Feb. 2004 meeting and Jun 23, 2004 meeting

H. Przysiezniak
Gravity-mediated UED and the two-photon channel, June 23, 2004 meeting

tt spin correlations

K. Smolek et al.,
Effect of Graviton on Top-Antitop Spin Correlations at LHC in Extradimensional Theory,
June 23, 2004

Other thesis subjects:

EW symmetry breaking
     SM particles in the bulk,  see Barbieri et al.,  hep-ph/0011311
                                           and Arkani-Hamed et al.,   hep-ph/0102090
     Higgsless EWSB with warped extraD,
                             T. Rizzo, hep-ph/0405094 and refs therein
 

TeV-1-size extra-D
  - Dicus et al, hep-ph/0012259
          TeV-1 size extra dimension, where GB's in bulk
          very large effect on dijet production from  KK gluon  exchange


Universal extra dimensions
   in particular, see: 
  - original paper Applequist, Cheng and Dobrescu  hep-ph/0012100 ,
  - T. Rizzo: Probes of UED, hep-ph/0106336,
     g-2 constraint small, scenarios given for decay of KK states
     signatures:  heavy charged stable particles (if no KK decay)
                      f →  f G → f + ETmiss
                      f → f + GB ( like heavy fermion decays)
  - Macesanu et al, hep-ph/0201300,
     calculation of process of production of pair of KK gluons and/or quarks
     signal: di-jets + ETmiss (assume KK states decay)
  - Macesanu et al., hep-ph/0207269
     lightest KK particle (LKP) is the KK state of gamma
     signal evaluated:  p p → q1 q1  → ...cascade ...  → g* g* → g G   g G
  - Macesanu, Nandi and Rujoiu, hep-ph/0407253
     Single Kaluza Klein Production in Universal Extra Dimensions
  - Cheng et al., bosonic SUSY? Getting fooled at the LHC, hep-ph/0205314
     MUED = Minimal Universal Extra Dimensions: KK observables very similar to SUSY
     signals from level 1 KK states look like SUSY with small differences (spin and Higgs sector)
     second KK level = smoking gun

TransPlanckian
  - Cheung et al, p-brane production, hep-ph/0205284
     In fat brane or UED scenarios, p-branes can be produced, like black-holes ( = 0-branes) with large cross section. Decays to SM particles. Signature likely similar to black-holes.