monte carlo generators of black holes at...
TRANSCRIPT
Monte Carlo Generators of Black Monte Carlo Generators of Black Holes at LHCHoles at LHC
Enikı RegısEnikı Regıs
Search for Extra DimensionsSearch for Extra Dimensions
�� LHC : Quantum Gravity & Extra DimsLHC : Quantum Gravity & Extra Dims
�� Stringy Quantum Black HolesStringy Quantum Black Holes
�� LowLow--scale Gravity Black Holes at LHCscale Gravity Black Holes at LHC
�� Comparison of Black Hole GeneratorsComparison of Black Hole Generators
ww
De Roeck Gamsizkan TrocsanyiDe Roeck Gamsizkan Trocsanyi
Black holes at LHCBlack holes at LHC
�� Event generator for ED BHs : BlackMax IEvent generator for ED BHs : BlackMax I--IIII
�� Rotation, fermion splitting, brane tensionRotation, fermion splitting, brane tension
�� Experimental signatures, particle decayExperimental signatures, particle decay
�� CMSSW analysisCMSSW analysis
�� Comparison with Charybdis IComparison with Charybdis I--IIII
�� TRUENOIR, CATFISH : no rotationTRUENOIR, CATFISH : no rotation
�� Energy lossEnergy loss
Black Hole Mass functionBlack Hole Mass function
�� Log Log ΦΦ ~ M ~ M -- M_minM_min
for various models of for various models of
Planck mass, ED, M_min,Planck mass, ED, M_min,
rotation, brane tensionrotation, brane tension
BlackMax & Charybdis agreeBlackMax & Charybdis agree
on initial mass distributionon initial mass distribution
as not affected by mass lossas not affected by mass loss
Lepton transverse momentum : models Lepton transverse momentum : models
�� Planck massPlanck mass : 2, 2, 5 TeV: 2, 2, 5 TeV
�� Extra dimensions:Extra dimensions: 5, 3, 3 ( > 2 )5, 3, 3 ( > 2 )
�� Center of mass energy: 14 TeVCenter of mass energy: 14 TeV
Minimum black hole mass : Minimum black hole mass : 4, 5, 7 TeV4, 5, 7 TeV
Multiplicity decreases with Planck massMultiplicity decreases with Planck mass
(fermions dominate)(fermions dominate)
Energy and momentum increaseEnergy and momentum increase
Model comparisonsModel comparisons
Analysis at CMSAnalysis at CMS
�� Missing Transverse Energy : Missing Transverse Energy :
graviton + neutrino : model dependentgraviton + neutrino : model dependent
�� Lepton transverse momentum :Lepton transverse momentum :
easy to identify, cuts off for Standard easy to identify, cuts off for Standard ModelModel
Combined cuts : Combined cuts : ήή , p_T distribution, p_T distribution
Model settings for detector which have Model settings for detector which have different signaturedifferent signature
�� Implementation of generators in CMSSWImplementation of generators in CMSSW
�� Interface BlackMax IIInterface BlackMax II
�� CMSSW : signal and SM backgroundCMSSW : signal and SM background
�� Model with 4TeV minimum black hole mass Model with 4TeV minimum black hole mass experimentally most accessibleexperimentally most accessible
Comparison of BlackMax with Charybdis Comparison of BlackMax with Charybdis for nonfor non--rotating black holesrotating black holes
�� BlackMax has higher multiplicity & BlackMax has higher multiplicity &
lower momentalower momenta
�� Missing Transverse Energy : Missing Transverse Energy :
gravitons only in BlackMax (black curves)gravitons only in BlackMax (black curves)
BlackMaxBlackMax--II : gravitons in final burst tooII : gravitons in final burst too
Higher METHigher MET
Apart from cross sections good agreementApart from cross sections good agreement
Yoshino Yoshino –– Rychkov suppression decreases Rychkov suppression decreases σσ
Multiplicity in BlackMax & CharybdisMultiplicity in BlackMax & Charybdis
Transverse momentum of emitted electronsTransverse momentum of emitted electrons
Transverse momentum of all particlesTransverse momentum of all particles
Spectrum of emitted electronsSpectrum of emitted electrons
Spectrum of emitted particlesSpectrum of emitted particles
Pseudorapidity of electronsPseudorapidity of electrons
Pseudorapidity of emitted particlesPseudorapidity of emitted particles
Missing Transverse Energy with GravitonsMissing Transverse Energy with Gravitons
Rotating Black Holes : Rotating Black Holes : Compare BlackMax II with Charybdis IICompare BlackMax II with Charybdis II
�� BHs carry spin from impact parameterBHs carry spin from impact parameter
�� Spin : fewer, more energetic particlesSpin : fewer, more energetic particles
�� Enhanced vector emission: more gluons, Enhanced vector emission: more gluons, photons, W, Zphotons, W, Z
�� Particle spectra, angular distributions, Particle spectra, angular distributions, multiplicities strongly affected by BH spinmultiplicities strongly affected by BH spin
In rotating D>5 graviton emission unknownIn rotating D>5 graviton emission unknown
Multiplicities for Rotating Black HolesMultiplicities for Rotating Black Holes
Transverse momentum of all particles for rotationTransverse momentum of all particles for rotation
Transverse momentum of electrons for rotationTransverse momentum of electrons for rotation
Pseudorapidity of all particles for rotationPseudorapidity of all particles for rotation
Pseudorapidity of electrons for rotationPseudorapidity of electrons for rotation
Missing Transverse Energy with rotationMissing Transverse Energy with rotation
Transverse momentum of all particles : Transverse momentum of all particles :
rotating black hole with Yoshino rotating black hole with Yoshino -- RychkovRychkov
Transverse momentum of electrons : Transverse momentum of electrons : rotating with Yoshino rotating with Yoshino -- Rychkov suppressionRychkov suppression
Multiplicities for rotation, Yoshino Multiplicities for rotation, Yoshino -- RychkovRychkov
MET with rotation, Yoshino MET with rotation, Yoshino -- RychkovRychkov
Thank you for your attention !Thank you for your attention !