RAPORT DE ACTIVITATE AL FAZEI Contract nr.: PN 09370102/2009 - PowerPoint PPT Presentation

RAPORT DE ACTIVITATE AL FAZEI Contract nr.: PN 09370102/2009 Titlul proiectului: Elaborarea de modele teoretice ¸ si metode matematice riguroase pentru investigarea structurii materiei Director de proiect: Dr. Aurelian Isar Faza nr. 3/2012: Factori de form˘ a hadronici la energii joase Obiectivul fazei: Testarea modelului standard al particulelor la energii joase ¸ si detectarea unor posibile semnale ale fizicii dincolo de modelul standard. Rezultate preconizate: Se vor dezvolta metode teoretice specifice regimului neperturbativ al cromodinamicii cuantice pentru descrierea factorilor de form˘ a electromagnetici ¸ si slabi ai mezonilor pseudoscalari ¸ si calculul unor marimi de interes pentru testarea modelului standard. Termen: 15 martie 2013

Parametrization-free determination of the shape parameters of the pion electromagnetic form factor Irinel Caprini in colaboration with B. Ananthanarayan, Diganta Das and I. Sentitemsu Imsong (Bangalore) Irinel Caprini, DFT, IFIN-HH PN 09370102/2009, Faza 1/2013, February 28, 2013

Outline � pion charge radius 1 Motivation � higher shape parameters 2 The pion electromagnetic form factor 3 Phenomenological and theoretical input 4 Mathematical formalism 5 Results 6 Summary and conclusions Irinel Caprini, DFT, IFIN-HH PN 09370102/2009, Faza 1/2013, February 28, 2013

� direct evidence of BSM: new particles discovered in high energy collisions Motivation � indirect evidence of BSM: influence (through quantum fluctuations) on � global electroweak precision tests � low energy tests: muon’s anomalous magnetic moment (g-2) • Precision tests of Standard Model (SM) and searches for Beyond Standard Model (BSM) signals observables measured with high precision Irinel Caprini, DFT, IFIN-HH PN 09370102/2009, Faza 1/2013, February 28, 2013

Search for new particles � a new family of quarks: m t ′ , m b ′ > 670 GeV � a new family of heavy leptons • Searches based on exotic final states signatures (two same-sign leptons, jets � new gauge bosons Z ′ and W ′ : m Z ′ , m W ′ > 2 . 4 TeV with high transverse momenta, large transverse missing energy, prompt energetic photons, etc) � more Higgs bosons, charged or neutral • No particles beyond SM detected up to now � other exotic particles: lepto-quarks, composite or excited leptons or • Only lower limits on masses and upper limits on cross sections (at Tevatron, DESY, LHC) � supersymmetric partners of SM particles: sfermions (stop), gluino, (ATLAS) (ATLAS) quarks, particles from extradimensions... chargino, etc. Irinel Caprini, DFT, IFIN-HH PN 09370102/2009, Faza 1/2013, February 28, 2013

ATLAS searches for exotic particles (other than supersymmetry) ATLAS Exotics Searches* - 95% CL Lower Limits (Status: HCP 2012) δ Large ED (ADD) : monojet + E L -1 M ( =2) =4.7 fb , 7 TeV [1210.4491] 4.37 TeV T ,miss D δ Large ED (ADD) : monophoton + E L -1 M ( =2) ATLAS =4.6 fb , 7 TeV [1209.4625] 1.93 TeV T ,miss D Extra dimensions Large ED (ADD) : diphoton & dilepton, m δ L -1 4.18 TeV M (HLZ =3, NLO) γ γ =4.7 fb , 7 TeV [1211.1150] / ll S Preliminary UED : diphoton + E -1 L =4.8 fb -1 , 7 TeV [ATLAS-CONF-2012-072] 1.41 TeV Compact. scale R T ,miss 1 -1 S /Z ED : dilepton, m L -1 M ~ R =4.9-5.0 fb , 7 TeV [1209.2535] 4.71 TeV KK 2 ll RS1 : diphoton & dilepton, m L -1 Graviton mass ( k / M = 0.1) γ γ =4.7-5.0 fb , 7 TeV [1210.8389] 2.23 TeV / ll Pl ∫ RS1 : ZZ resonance, m L -1 845 GeV Graviton mass ( k / M = 0.1) =1.0 fb , 7 TeV [1203.0718] llll / lljj Pl -1 RS1 : WW resonance, m Ldt = (1.0 - 13.0) fb L =4.7 fb -1 , 7 TeV [1208.2880] 1.23 TeV Graviton mass ( k / M = 0.1) T ,l ν l ν Pl → → RS g tt (BR=0.925) : tt l+jets, m L -1 g mass =4.7 fb , 7 TeV [ATLAS-CONF-2012-136] 1.9 TeV KK tt,boosted KK s = 7, 8 TeV δ ADD BH ( M / M =3) : SS dimuon, N L -1 M ( =6) =1.3 fb , 7 TeV [1111.0080] 1.25 TeV TH D ch. part. D Σ ADD BH ( M / M =3) : leptons + jets, p δ L -1 M ( =6) TH D =1.0 fb , 7 TeV [1204.4646] 1.5 TeV T D Quantum black hole : dijet, F ( m ) L -1 δ =4.7 fb , 7 TeV [1210.1718] 4.11 TeV M ( =6) χ jj χ D qqqq contact interaction : ( m ) Λ L -1 =4.8 fb , 7 TeV [ATLAS-CONF-2012-038] 7.8 TeV µ µ jj CI Λ qqll CI : ee & , m L -1 (constructive int.) =4.9-5.0 fb , 7 TeV [1211.1150] 13.9 TeV ll uutt CI : SS dilepton + jets + E Λ L -1 =1.0 fb , 7 TeV [1202.5520] 1.7 TeV T ,miss Z’ (SSM) : m L -1 =5.9-6.1 fb , 8 TeV [ATLAS-CONF-2012-129] 2.49 TeV Z’ mass ee/ µ µ Z’ (SSM) : m L -1 Z’ mass =4.7 fb , 7 TeV [1210.6604] 1.4 TeV τ τ W’ (SSM) : m L -1 W’ mass µ =4.7 fb , 7 TeV [1209.4446] 2.55 TeV V’ T,e/ → W’ ( tq, g =1) : m L -1 W’ mass =4.7 fb , 7 TeV [1209.6593] 430 GeV R tq → W’ ( tb, SSM) : m L =1.0 fb -1 , 7 TeV [1205.1016] 1.13 TeV W’ mass R tb W* : m L -1 W* mass =4.7 fb , 7 TeV [1209.4446] 2.42 TeV T,e/ µ β ν st Scalar LQ pair ( =1) : kin. vars. in eejj, e jj L -1 1 gen. LQ mass =1.0 fb , 7 TeV [1112.4828] 660 GeV LQ β µ µ µ ν nd Scalar LQ pair ( =1) : kin. vars. in jj, jj L -1 2 gen. LQ mass =1.0 fb , 7 TeV [1203.3172] 685 GeV β τ τ τ ν rd Scalar LQ pair ( =1) : kin. vars. in jj, jj L =4.7 fb -1 , 7 TeV [Preliminary] 538 GeV 3 gen. LQ mass th → L -1 t’ mass New quarks 4 generation : t’t’ WbWb =4.7 fb , 7 TeV [1210.5468] 656 GeV th → 4 generation : b’b’(T T ) WtWt L -1 b’ (T ) mass =4.7 fb , 7 TeV [ATLAS-CONF-2012-130] 670 GeV 5/3 5/3 → 5/3 New quark b’ : b’b’ Zb+X, m L -1 b’ mass =2.0 fb , 7 TeV [1204.1265] 400 GeV Zb → Top partner : TT tt + A A (dilepton, M ) L =4.7 fb -1 , 7 TeV [1209.4186] 483 GeV T mass ( m (A ) < 100 GeV) 0 0 T2 0 κ ν Vector-like quark : CC, m L -1 VLQ mass (charge -1/3, coupling = /m ) =4.6 fb , 7 TeV [ATLAS-CONF-2012-137] 1.12 TeV l ν q qQ Q κ ν Vector-like quark : NC, m L -1 VLQ mass (charge 2/3, coupling = /m ) =4.6 fb , 7 TeV [ATLAS-CONF-2012-137] 1.08 TeV llq qQ Q γ Excited quarks : -jet resonance, m Excit. L -1 q* mass ferm. =2.1 fb , 7 TeV [1112.3580] 2.46 TeV γ jet Excited quarks : dijet resonance, m L =13.0 fb -1 , 8 TeV [ATLAS-CONF-2012-148] q* mass 3.84 TeV jj γ Λ Excited lepton : l- resonance, m L l* mass ( = m(l*)) =13.0 fb -1 , 8 TeV [ATLAS-CONF-2012-146] 2.2 TeV γ l ρ ω ρ ω π Techni-hadrons (LSTC) : dilepton, m L -1 / mass ( m ( / ) - m ( ) = M ) µ µ =4.9-5.0 fb , 7 TeV [1209.2535] 850 GeV ee/ ν T T T T T W Techni-hadrons (LSTC) : WZ resonance ( lll), m ρ ρ π ρ L -1 mass ( m ( ) = m ( ) + m , m (a ) = 1.1 m ( )) =1.0 fb , 7 TeV [1204.1648] 483 GeV T ,WZ T W T T T T Other Major. neutr. (LRSM, no mixing) : 2-lep + jets L -1 N mass ( m (W ) = 2 TeV) =2.1 fb , 7 TeV [1203.5420] 1.5 TeV R W (LRSM, no mixing) : 2-lep + jets L =2.1 fb -1 , 7 TeV [1203.5420] 2.4 TeV W mass ( m (N) < 1.4 TeV) R ± ± R ± ± → µ µ ± ± µ µ H (DY prod., BR(H ll)=1) : SS ee ( ), m L -1 H mass (limit at 398 GeV for ) =4.7 fb , 7 TeV [1210.5070] 409 GeV L L ± ± L ± ± → µ µ ll H (DY prod., BR(H e )=1) : SS e , m ± ± L -1 H mass =4.7 fb , 7 TeV [1210.5070] 375 GeV L e µ L L Color octet scalar : dijet resonance, m L -1 Scalar resonance mass =4.8 fb , 7 TeV [1210.1718] 1.86 TeV jj -1 2 10 1 10 10 Mass scale [TeV] * Only a selection of the available mass limits on new states or phenomena shown Irinel Caprini, DFT, IFIN-HH PN 09370102/2009, Faza 1/2013, February 28, 2013