Hunting light SUSY: combined impact of LHC searches

Transcription

1 Hunting light SUSY: combined impact of LHC searches Krzysztof Rolbiecki IF UAM/CSIC Madrid J.S. Kim, KR, K. Sakurai, J. attersall arxiv: KR and K. Sakurai, JHEP 39 (23) 4 K. Rolbiecki (IF Madrid) SUSY, / 9

2 ons of exclusion limits from LHC m / MSUGRA/CMSSM: tan( β) = 3, A = -2m, µ > Status: ICHEP 24 τ LSP ALAS Preliminary L dt = fb, s = 8 ev h (22 GeV) h (24 GeV) 95% CL limits. h (26 GeV) SUSY σtheory not included. -lepton, 2-6 jets arxiv: lepton, 7 jets arxiv: lepton, 3 b-jets arxiv: lepton + jets + ME ALAS-CONF taus + lept. + jets + ME arxiv: SS/3 leptons, - 3 b-jets arxiv: g (4 GeV) 5 4 g ( GeV) 3 q (6 GeV) q (24 GeV) m K. Rolbiecki (IF Madrid) SUSY, / 9

3 ons of exclusion limits from LHC m / MSUGRA/CMSSM: tan( β) = 3, A = -2m, µ > Status: ICHEP 24 τ LSP ALAS Preliminary L dt = fb, s = 8 ev h (22 GeV) h (24 GeV) 95% CL limits. h (26 GeV) SUSY σtheory not included. -lepton, 2-6 jets arxiv: lepton, 7 jets arxiv: lepton, 3 b-jets arxiv: lepton + jets + ME ALAS-CONF taus + lept. + jets + ME arxiv: SS/3 leptons, - 3 b-jets arxiv: g (4 GeV) 5 4 g ( GeV) 3 q (6 GeV) q (24 GeV) m K. Rolbiecki (IF Madrid) SUSY, / 9

4 m /2 ons of exclusion limits from LHC MSUGRA/CMSSM: tan( β) = 3, A = -2m, µ > Status: ICHEP 24 τ LSP ALAS Preliminary L dt = fb, s = 8 ev h (22 GeV) g ( GeV) q (6 GeV) h (24 GeV) q (24 GeV) 95% CL limits. h (26 GeV) SUSY σtheory not included. -lepton, 2-6 jets arxiv: lepton, 7 jets arxiv: lepton, 3 b-jets arxiv: lepton + jets + ME ALAS-CONF taus + lept. + jets + ME arxiv: SS/3 leptons, - 3 b-jets arxiv: g (4 GeV) m LSP mass t-t production CMS Preliminary s = 8 ev SUSY 23 SUS3-4 -lep+-lep (Razor) 9.3 fb SUS3 -lep (leptonic stop)9.5 fb SUS3 -lep (leptonic stop)9.5 fb m-m t =m W m-m t =m t m -m ± =m W ( t t ( t t ( t b ) ) +, x=.25) stop mass K. Rolbiecki (IF Madrid) SUSY, / 9

5 MSUGRA/CMSSM 2-6 jets Yes 2.3 q, g.7 ev m( q)=m( g) MSUGRA/CMSSM e, µ 3-6 jets Yes 2.3 g.2 ev any m( q) ALAS-CONF MSUGRA/CMSSM 7 jets Yes 2.3 g. ev any m( q) q q, q q 2-6 jets Yes 2.3 q 85 GeV m( )= GeV, m( st gen. q)=m(2 nd gen. q) g g, g q q 2-6 jets Yes 2.3 g.33 ev m( )= GeV g g, g qq ± qqw ± e, µ 3-6 jets Yes 2.3 g.8 ev m( )<2 GeV, m( ± )=.5(m( )+m( g)) ALAS-CONF g g, g qq(ll/lν/νν) 2 e, µ -3 jets g.2 ev m( )= GeV ALAS-CONF GMSB ( l NLSP) 2 e, µ 2-4 jets Yes 4.7 g.24 ev tanβ< GMSB ( l NLSP) -2 τ + l -2 jets Yes 2.3 g.6 ev tanβ > GGM (bino NLSP) 2 γ - Yes 2.3 g.28 ev m( )>5 GeV ALAS-CONF-24 GGM (wino NLSP) e, µ + γ - Yes 4.8 g 69 GeV m( )>5 GeV ALAS-CONF-2244 GGM (higgsino-bino NLSP) γ b Yes 4.8 g 9 GeV m( )>22 GeV 2.67 GGM (higgsino NLSP) 2 e, µ (Z) -3 jets Yes 5.8 g 69 GeV m(nlsp)>2 GeV ALAS-CONF-2252 Gravitino LSP mono-jet Yes.5 F /2 scale 645 GeV m( G)> 4 ev ALAS-CONF-2247 g b b 3 b Yes 2. g.25 ev m( )<4 GeV 47.6 g t t 7 jets Yes 2.3 g. ev m( ) <35 GeV g t t e, µ 3 b Yes 2. g.34 ev m( )<4 GeV 47.6 g b t + e, µ 3 b Yes 2. g.3 ev m( )<3 GeV 47.6 b b, b b 2 b Yes 2. b -62 GeV m( )<9 GeV b GeV t t(light), t b ± -2 e, µ -2 b Yes 4.7 t 67 GeV m( )=55 GeV , t t(light), t Wb 2 e, µ -2 jets Yes 2.3 t 3-2 GeV m( ) =m( t)-m(w)-5 GeV, m( t)<<m( ± ) t t(medium), t t 2 e, µ 2 jets Yes 2.3 t GeV m( )= GeV t t(medium), t b ± 2 b Yes 2. t 5-58 GeV m( )<2 GeV, m( ± )-m( )=5 GeV t t(heavy), t t e, µ b Yes 2 t 2-64 GeV m( )= GeV t t(heavy), t t 2 b Yes 2. t GeV m( )= GeV t t, t c mono-jet/c-tag Yes 2.3 t 9-24 GeV m( t)-m( )<85 GeV t 5-58 GeV ll,r ll,r, l l 2 e, µ Yes 2.3 l GeV m( )= GeV GeV -35 GeV 7 GeV 2-3 e, µ Yes GeV m( ± )=m( 2), m( )=, sleptons decoupled , e, µ 2 b Yes GeV m( ± )=m( 2), m( )=, sleptons decoupled ALAS-CONF Direct + prod., long-lived ± Disapp. trk jet Yes GeV m( ± )-m( )=6 MeV, τ( ± )=.2 ns ALAS-CONF Stable, stopped g R-hadron -5 jets Yes 27.9 g 832 GeV m( )= GeV, µs<τ( g)< s GMSB, stable τ, τ(ẽ, µ)+τ(e, µ) -2 µ GeV <tanβ<5 ALAS-CONF GMSB, γ G, long-lived 2 γ - Yes GeV.4<τ( )<2 ns q q, qqµ (RPV) µ, displ. vtx q. ev.5 <cτ<56 mm, BR(µ)=, m( )=8 GeV ALAS-CONF ντ.6 ev =., λ32= ντ. ev =., λ(2)33= Bilinear RPV CMSSM 2 e, µ (SS) -3 b Yes 2.3 q, g.35 ev m( q)=m( g), cτlsp< mm GeV +, + W, 3 e, µ + τ - ττ νe,eτ ντ Yes GeV m( )>.2 m( ± ), λ g 96 GeV g tt, t bs 2 e, µ (SS) -3 b Yes 2.3 g 85 GeV Scalar gluon pair, sgluon q q 4 jets sgluon -287 GeV incl. limit from Scalar gluon pair, sgluon t t 2 e, µ (SS) 2 b Yes 4.3 sgluon 35-8 GeV ALAS-CONF-23-5 WIMP interaction (D5, Dirac ) mono-jet Yes.5 M* scale 74 GeV m()<8 GeV, limit of<687 GeV for D8 ALAS-CONF-2247 m /2 ons of exclusion limits from LHC MSUGRA/CMSSM: tan( β) = 3, A = -2m, µ > Status: ICHEP 24 τ LSP Inclusive Searches ALAS Preliminary L dt = fb, s = 8 ev h (22 GeV) g ( GeV) q (6 GeV) h (24 GeV) q (24 GeV) 95% CL limits. h (26 GeV) SUSY σtheory not included. -lepton, 2-6 jets arxiv: lepton, 7 jets arxiv: lepton, 3 b-jets arxiv: lepton + jets + ME ALAS-CONF taus + lept. + jets + ME arxiv: SS/3 leptons, - 3 b-jets arxiv: g (4 GeV) ALAS SUSY Searches* - 95% CL Lower Limits ALAS Preliminary Status: ICHEP 24 Model e, µ, τ, γ Jets E miss s = 7, 8 ev Ldt[fb ] Mass limit Reference m 3 rd gen. g med. 3 rd gen. squarks direct production EW direct b b, b t ± 2 e, µ (SS) -3 b Yes 2.3 m( ± )=2 m( ) t t(natural GMSB) 2 e, µ (Z) b Yes 2.3 m( )>5 GeV t2 t2, t2 t +Z 3 e, µ (Z) b Yes 2.3 t GeV m( )<2 GeV , + lν(l ν) 2 e, µ Yes 2.3 ± m( )= GeV, m( l, ν)=.5(m( ± )+m( )) , + τν(τ ν) 2 τ - Yes 2.3 ± m( )= GeV, m( τ, ν)=.5(m( ± )+m( )) ± 2 llν lll( νν), l ν lll( νν) 3 e, µ Yes 2.3 ± m( ± )=m( 2), m( )=, m( l, ν)=.5(m( ± )+m( )) , 2 ± 2 W Z ±, 2 ± 2 W h ±, 2 2 3, 2,3 lrl 4 e, µ Yes GeV m( 2)=m( 3), m( )=, m( l, ν)=.5(m( 2)+m( 2,3 )) LSP mass t-t production CMS Preliminary s = 8 ev SUSY 23 SUS3-4 -lep+-lep (Razor) 9.3 fb SUS3 -lep (leptonic stop)9.5 fb SUS3 -lep (leptonic stop)9.5 fb m-m t =m W m-m t =m t m -m ± =m W ( t t ( t t ( t b ) ) +, x=.25) stop mass Long-lived particles ± Other RPV LFV pp ντ + X, ντ e + µ 2 e, µ λ 3 LFV pp ντ + X, ντ e(µ) + τ e, µ + τ λ 3 +, + W, ee νµ,eµ νe 4 e, µ - Yes 2.3 ± m( )>.2 m( ± ), λ ± g qqq 6-7 jets BR(t)=BR(b)=BR(c)=% ALAS-CONF-23-9 s = 7 ev s = 8 ev s = 8 ev full data partial data full data Mass scale [ev] *Only a selection of the available mass limits on new states or phenomena is shown. All limits quoted are observed minus σ theoretical signal cross section uncertainty. K. Rolbiecki (IF Madrid) SUSY, / 9

6 MSUGRA/CMSSM 2-6 jets Yes 2.3 q, g.7 ev m( q)=m( g) MSUGRA/CMSSM e, µ 3-6 jets Yes 2.3 g.2 ev any m( q) ALAS-CONF MSUGRA/CMSSM 7 jets Yes 2.3 g. ev any m( q) q q, q q 2-6 jets Yes 2.3 q 85 GeV m( )= GeV, m( st gen. q)=m(2 nd gen. q) g g, g q q 2-6 jets Yes 2.3 g.33 ev m( )= GeV g g, g qq ± qqw ± e, µ 3-6 jets Yes 2.3 g.8 ev m( )<2 GeV, m( ± )=.5(m( )+m( g)) ALAS-CONF g g, g qq(ll/lν/νν) 2 e, µ -3 jets g.2 ev m( )= GeV ALAS-CONF GMSB ( l NLSP) 2 e, µ 2-4 jets Yes 4.7 g.24 ev tanβ< GMSB ( l NLSP) -2 τ + l -2 jets Yes 2.3 g.6 ev tanβ > GGM (bino NLSP) 2 γ - Yes 2.3 g.28 ev m( g qq SUS 39 L=9.5 /fb )>5 GeV ALAS-CONF-24 GGM (wino NLSP) e, µ + γ - Yes 4.8 g 69 GeV m( g bb SUS4 SUS39 L= /fb )>5 GeV ALAS-CONF-2244 GGM (higgsino-bino NLSP) γ b Yes 4.8 g 9 GeV m( g tt SUS3-7 SUS33 L= /fb )>22 GeV 2.67 g t( t t ) SUS3-8 SUS33 L=9.5 /fb GGM (higgsino NLSP) 2 e, µ (Z) -3 jets Yes 5.8 g 69 GeV m(nlsp)>2 GeV ± ALAS-CONF-2252 g qq( W ) SUS33 L=9.5 /fb Gravitino LSP mono-jet Yes.5 F /2 scale 645 GeV m( G)> 4 ± ev g b( ALAS-CONF-2247 b t( W )) SUS3-8 SUS33 L=9.5 /fb g b b 3 b Yes 2. g.25 ev m( )<4 GeV 47.6 g t t 7 jets Yes 2.3 m( q q SUS39 L=9.5 /fb g. ev ) <35 GeV g t t e, µ 3 b Yes 2. g.34 ev m( )<4 GeV 47.6 g b t + e, µ 3 b Yes 2. g.3 ev m( t t SUS4 L=9.5 /fb + )<3 GeV 47.6 t b( W ) SUS3 L=9.5 /fb b b, b b 2 b Yes 2. b -62 GeV m( t t b )<9 GeV ( H G) SUS34 L=9.5 /fb b GeV t ( t t ) Z SUS3-24 SUS3-4 L=9.5 /fb 2 t t(light), t b ± -2 e, µ -2 b Yes 4.7 t 67 GeV m( t ( t t ) H SUS3-24 SUS3-4 L=9.5 /fb )=55 GeV , t t(light), t Wb 2 e, µ -2 jets Yes 2.3 t 3-2 GeV m( ) =m( t)-m(w)-5 GeV, m( t)<<m( ± ) t t(medium), t t 2 e, µ 2 jets Yes 2.3 t GeV m( b b SUS38 L=9.4 /fb )= GeV t t(medium), t b ± 2 b Yes 2. t 5-58 GeV m( )<2 GeV, m( ± )-m( b tw SUS3-8 SUS33 L=9.5 /fb )=5 GeV t t(heavy), t t e, µ b Yes 2 t 2-64 GeV m( b bz SUS3-8 L=9.5 /fb )= GeV t t(heavy), t t 2 b Yes 2. t GeV m( )= GeV t t, t c mono-jet/c-tag Yes 2.3 t 9-24 GeV m( t)-m( ± lll ν SUS3-6 L=9.5 /fb )<85 GeV l l ν ν SUS3-6 L=9.5 /fb t 5-58 GeV Z Z SUS4-2 L=9.5 /fb 2 2 t GeV ± W Z SUS3-6 L=9.5 /fb 2 ll,r ll,r, l l 2 e, µ Yes 2.3 l GeV m( H Z )= GeV SUS4-2 L=9.5 /fb GeV 2 2 ± H W SUS4-2 L=9.5 /fb -35 GeV 2 ± llτ ν SUS3-6 L=9.5 /fb 2 ± τττ ν SUS3-6 L=9.5 /fb 7 GeV e, µ Yes GeV m( ± )=m( 2), m( )=, sleptons decoupled , e, µ 2 b Yes GeV m( ± )=m( 2), m( l l )=, sleptons decoupled ALAS-CONF SUS3-6 L=9.5 /fb 62 GeV g qllν λ SUS2-27 L=9.2 /fb Direct + prod., long-lived ± 22 Disapp. trk jet Yes GeV m( ± )-m( )=6 MeV, τ( ± g qllν λ )=.2 ns ALAS-CONF SUS2-27 L=9.2 /fb Stable, stopped g R-hadron -5 jets Yes 27.9 g 832 GeV m( g qllν λ 23 )= GeV, µs<τ( g)< s GMSB, stable τ, 233 SUS2-27 L=9.2 /fb τ(ẽ, µ)+τ(e, µ) -2 µ GeV <tanβ<5 g qbtµ ALAS-CONF λ ' SUS2-27 L=9.2 /fb GMSB, γ G, long-lived 23 2 γ - Yes GeV.4<τ( g qbtµ λ ' )<2 ns SUS2-27 L=9.2 /fb q q, qqµ (RPV) µ, displ. vtx q. ev.5 <cτ<56 mm, BR(µ)=, m( g qqb )=8 GeV ALAS-CONF λ '' 233 EXO2-49 L=9.5 /fb 3/223 g qqq λ '' EXO2-49 L=9.5 /fb ντ.6 ev =., λ32=.5 g tbs λ '' SUS33 L=9.5 /fb ντ. ev =., λ(2)33=.5 g qqqq λ '' SUS2-27 L=9.2 /fb Bilinear RPV CMSSM 2 e, µ (SS) -3 b Yes 2.3 q, g.35 ev m( q)=m( g), cτlsp< mm q qllν λ 2 75 GeV 22 SUS2-27 L=9.2 /fb q qllν λ SUS2-27 L=9.2 /fb +, + W, 3 e, µ + τ - ττ νe,eτ ντ Yes GeV m( )>.2 m( ± ), λ33 23 q qllν λ SUS2-27 L=9.2 /fb g q qbtµ λ ' 96 GeV 233 g tt, t bs 2 e, µ (SS) -3 b Yes 2.3 g 85 GeV 23 SUS2-27 L=9.2 /fb q qbtµ λ ' SUS2-27 L=9.2 /fb 233 q qqqq λ '' R 2 SUS2-27 L=9.2 /fb Scalar gluon pair, sgluon q q 4 jets sgluon -287 GeV incl. limit from.2693 t µ e ν t λ SUS3-3 L= /fb R 22 Scalar gluon pair, sgluon t t 2 e, µ (SS) 2 b Yes 4.3 sgluon 35-8 GeV ALAS-CONF-23-5 t µ τν t λ SUS2-27 L=9.2 /fb R 23 WIMP interaction (D5, Dirac ) mono-jet Yes.5 M* scale 74 GeV m()<8 GeV, limit of<687 GeV for D8 ALAS-CONF-2247 t µ τν t λ SUS3-3 L= /fb R 233 t tbtµ λ ' SUS3-3 L=9.5 /fb R 233 x =.25 x =.5 x =.75 x =.95 x =.5 x =.5 x =.95 x =.5.5 x =.5 x =.2 mother lsp m /2 ons of exclusion limits from LHC MSUGRA/CMSSM: tan( β) = 3, A = -2m, µ > Status: ICHEP 24 τ LSP Inclusive Searches ALAS Preliminary L dt = fb, s = 8 ev h (22 GeV) g ( GeV) q (6 GeV) h (24 GeV) q (24 GeV) 95% CL limits. h (26 GeV) SUSY σtheory not included. -lepton, 2-6 jets arxiv: lepton, 7 jets arxiv: lepton, 3 b-jets arxiv: lepton + jets + ME ALAS-CONF taus + lept. + jets + ME arxiv: SS/3 leptons, - 3 b-jets arxiv: g (4 GeV) ALAS SUSY Searches* - 95% CL Lower Limits ALAS Preliminary Status: ICHEP 24 Model e, µ, τ, γ Jets E miss s = 7, 8 ev Ldt[fb ] Mass limit Reference m 3 rd gen. g med. 3 rd gen. squarks direct production EW direct Long-lived particles RPV Other b b, b t ± 2 e, µ (SS) -3 b Yes 2.3 m( ± )=2 m( ) t t(natural GMSB) 2 e, µ (Z) b Yes 2.3 m( )>5 GeV t2 t2, t2 t +Z 3 e, µ (Z) b Yes 2.3 m( )<2 GeV , + lν(l ν) 2 e, µ Yes 2.3 ± m( )= GeV, m( l, ν)=.5(m( ± )+m( )) , + τν(τ ν) 2 τ - Yes 2.3 ± m( )= GeV, m( τ, ν)=.5(m( ± )+m( )) ± 2 llν lll( νν), l ν lll( νν) 3 e, µ Yes 2.3 ± m( ± )=m( 2), m( )=, m( l, ν)=.5(m( ± )+m( )) , 2 ± 2 W Z ±, 2 ± 2 W h ±, 2 2 3, 2,3 lrl 4 e, µ Yes 2.3 m( 2)=m( 3), m( )=, m( l, ν)=.5(m( 2)+m( 2,3 )) ± LFV pp ντ + X, ντ e + µ 2 e, µ λ 3 LFV pp ντ + X, ντ e(µ) + τ e, µ + τ λ 3 +, + W, ee νµ,eµ νe 4 e, µ - Yes 2.3 ± m( )>.2 m( ± ), λ ± g qqq 6-7 jets BR(t)=BR(b)=BR(c)=% ALAS-CONF-23-9 RPV slepton EWK gauginos sbottom stop squark gluino production LSP mass Summary 5 of CMS SUSY Results* in SMS framework m(mother)-m(lsp)=2 GeV 5 t-t production CMS Preliminary s = 8 ev SUSY 23 SUS3-4 -lep+-lep (Razor) 9.3 fb SUS3 -lep (leptonic stop)9.5 fb SUS3 -lep (leptonic stop)9.5 fb m-m t =m W m-m t =m t m -m ± =m W ( t t ( t t CMS Preliminary For decays with intermediate mass, stop ( t b ) ) +, x=.25) ICHEP 24 full data partial data full data s = 7 ev s = 8 ev s = 8 ev Mass scale [ev] * limits, theory uncertainties not included Mass scales *Only a selection of the available mass limits on new states or phenomena is shown. All limits quoted are observed minus σ theoretical signal cross section uncertainty. Only a selection of available mass limits Probe *up to* the quoted mass limit m intermediate = x m +(-x) m m(lsp)= GeV K. Rolbiecki (IF Madrid) SUSY, / 9

7 total. < p < 2 ev y <3..3 < mjj < 5 ev R=.4 y <3. y <3. njet njet njet 2 njet 3 njet 4 njet 5 njet 6 njet 7 fiducial njet njet njet 2 njet 3 njet 4 njet 5 njet 6 njet 7 fiducial njet njet 4 njet 5 njet 6 njet 7 njet 8 total tt chan total WW+ total fiducial total total total fiducial fiducial njet= fiducial njet= total 95% CL upper limit total EWK fiducial 95% CL upper limit W ± W ± jj ts chan EWK fiducial fiducial total tt-ch tw ts-ch Good overall agreement of SM measurements Standard Model Production Cross Section Measurements Status: July 24 σ [pb] 8 µb ALAS Preliminary Run s = 7, 8 ev pb 35 pb LHC pp s = 7 ev heory Data fb 4.9 fb 3. fb 2. fb. fb LHC pp s = 8 ev heory Data 2.3 fb.7 fb σ [pb] Production Cross Section, Feb 24 n jet(s) n jet(s) =n jet(s) CMS Preliminary 7 ev CMS measurement (L 8 ev CMS measurement (L 7 ev heory prediction 8 ev heory prediction CMS 95%CL limit 5. fb ) 9.6 fb ) 3 pp Jets R=.4 Dijets W Z t t WZ total WW γγ Wt WZ ZZ t tγ Wγ Zγ t tw t tz Zjj H γγ W Z Wγ Zγ WW WZ ZZ γγ WW EW qqll WVγ tt ttγ ttz ggh VBF VH tth qqh h. σ H in exp. σ cross section [pb] Inclusive tt 2 evatron combination* L = 8.8 fb ALAS dilepton L = 4.6 fb CMS dilepton L = 2.3 fb ALAS lepton+jets* L =.7 fb CMS lepton+jets L = 2.3 fb ALAS dilepton L = 2.3 fb CMS dilepton L = 5.3 fb ALAS lepton+jets* L = 5.8 fb CMS lepton+jets* L = 2.8 fb * Preliminary ALAS+CMS Preliminary OPLHCWG 25 2 NNLO+NNLL (pp) 5 NNLO+NNLL (pp) 7 8 Czakon, Fiedler, Mitov, PRL (23) 2524 m top = 72.5 GeV, PDF uncertainties according to PDF4LHC S July s [ev] single top-quark cross-section σ [pb] 2 ALAS Preliminary July 24 single top-quark production t-channel Wt NLO+NNLL at m = 72.5 GeV t MSW28 NNLO PDF stat. uncertainty t-channel 4.59 fb arxiv: t-channel 2.3 fb ALAS-CONF-24-7 Wt 2.5 fb PLB 76 (22) 42 Wt 2.3 fb ALAS-CONF-23 s-channel 95% C.L. limit.7 fb ALAS-CONF-28 s-channel s [ev] K. Rolbiecki (IF Madrid) SUSY, / 9

8 W W cross section at the LHC SM NLO prediction: σ = 46 ± 2 7 ev σ = ev ALAS and CMS reported an excess in SM W W cross section measurements 7 ev, full data set: σ = 5.9 ± 2. (stat) ± 3.9 (syst) ± 2. (lumi) pb AL σ = 52.4 ± 2. (stat) ± 4.5 (syst) ±.2 (lumi) pb CMS2-5 8 ev, L = 3.54 fb : σ = 69.9 ± 2.8 (stat) ± 5.6 (syst) ± 3. (lumi) pb arxiv: K. Rolbiecki (IF Madrid) SUSY, / 9

9 New from ICHEP full 8 ev data set from ALAS gives: σ = 7.4 ±.2 (stat) (syst) (lumi) pb AL theory prediction: σ = pb with different contribution calculated at: q q W W NLO MCFM; gg W W LO MCFM; gg H W W NNLO+NNLL statistical error negligible consistent excess in all lepton channels the main systematic uncertainty originating from jet veto efficiency ALAS Preliminary Ldt = 2.3 fb s = 8 ev WW SM Prediction qq/qg WW: MCFM NLO C gg WW: MCFM LO C gg H WW: NNLO MSW28 Measured cross sections + - e e - µ + µ e ± µ ± Combined σww tot [pb] K. Rolbiecki (IF Madrid) SUSY, / 9

10 ± 2 2 Slight excess in 3-lepton electroweakinos? constraints on chargino/neutralino parameter space are also becoming serious typically tri-lepton channel most constraining m ALAS L dt = 2.3 fb, s=8 ev ± (*) (*) W Z 2 m = m m 2 < m m 2 - m = m Z SUSY limit (± σ ) theory limit (± σ exp) ALAS 4.7 fb, All limits at 95% CL m 2 = 2m s = 7 ev pp ± 2 l ± l + l still some parameter space allowed around ± m 2 GeV the final word at s = 8 ev but will be significantly improved at 4 ev the bounds can be relaxed if e.g. BR( 2 h( ) ) significant m ± m, pp 2 2 ± CMS Z ± W s = 8 ev L = 9.5 fb 95% CL CLs NLO Exclusions 2l2j 3l ±σ theory 2l2j 3l ±σ experiment 2l2j 3l -2σ experiment 3l only 2l2j only m - m = m Z m ±=m % CL upper limit on cross section (fb) K. Rolbiecki (IF Madrid) SUSY, / 9

11 Outline Introduction 2 Pinning down the stops 3 SUSY or SM? 4 Summary K. Rolbiecki (IF Madrid) SUSY, / 9

12 Outline Introduction Introduction 2 Pinning down the stops 3 SUSY or SM? 4 Summary K. Rolbiecki (IF Madrid) SUSY, / 9

13 Introduction W W cross section measurements looking for pp W + W l + νl ν final state: two opposite-sign leptons and missing energy basic selection: jet veto to suppress t t lepton p 2 GeV projected E miss 4 GeV (depends on channel) to suppress Drell-Yan Z veto for same flavor states main backgrounds: top Drell-Yan W+jets diboson Events / 5 GeV Events / 5 GeV CMS s = 8 ev, L = 3.5 fb DAA WW VV Z + jets W + jets top stat syst 5 5 max p ALAS Preliminary s = 8 ev, Ldt = 2.3 fb e ± ν µ ± ν channel Data WW (.2) op Zjets a) Wjets other diboson stat. unc. stat. syst. unc p (leading lepton) K. Rolbiecki (IF Madrid) SUSY, / 9

14 Introduction Supersymmetric zoo light stops ( t ) and higgsinos ( H) favoured by naturalness left and right-handed stops, t L, t R, mix to form t, t 2 zino, bino and neutral higgsinos mix to form four neutralinos, i wino and higgsinos mix to form charginos, ± j K. Rolbiecki (IF Madrid) SUSY, / 9

15 Introduction Di-lepton signal from t t p p t t + W + b b l + ν E miss E miss large QCD cross section O(2 pb) for m t 2 GeV for small mass difference,, b-jets are soft, m t ± m p b 2 GeV jet veto would not have effect observed final state similar to W W : l + l + E miss W l ν KR, Sakurai arxiv: Kim, KR, Sakurai, attersall arxiv: another possibility with stops and sbottoms, see: Curtin, Meade, ien arxiv: K. Rolbiecki (IF Madrid) SUSY, / 9

16 Introduction Di-lepton signal from t t p p t t + W + b b l + ν E miss E miss large QCD cross section O(2 pb) for m t 2 GeV for small mass difference,, b-jets are soft, m t ± m p b 2 GeV jet veto would not have effect observed final state similar to W W : l + l + E miss W l ν KR, Sakurai arxiv: Kim, KR, Sakurai, attersall arxiv: another possibility with stops and sbottoms, see: Curtin, Meade, ien arxiv: K. Rolbiecki (IF Madrid) SUSY, / 9

17 t ± int m ± = 4.7 fb m ± ± t m ± m ± = 4.7 fb < m t LHC vs stops Introduction m t t m production, t b m ± m = m = m < m b +m ( m ± ± + 5 GeV + 2 GeV = m +5 GeV) ± ± (*), W, L [38.263], [47.583] L [38.263], [47.583] ALAS Preliminary, Lint = 2 fb s=8 ev, Status: ICHEP 24 m ± m ± m ± = 5 GeV = 6 GeV = 6 GeV LEP limits limits All limits at 95% CL L [38.263], [47.583] -2L [47.583], [ ] -2L [28.435], [29.22] L int s=7 ev ( = 5 GeV) m t b f f c W b t t production, t / t / t / t 5 ALAS Preliminary L int = 2 fb s=8 ev 45 t t L [46.22] t t L [47.583] t 4 t 2L [ ] t W b L [47.583], 2L [ ] t c L [47.68] b f f L [47.68], L [47.583] 35 Status: ICHEP 24 L int = 4.7 fb L [28.447] L [28.259] 2L [29.486] s=7 ev m m ± m ± = 2 m = 2 m m t -2L [47.583], [ ] -2L [29.22] L < mb+m ( m ± ± ) = 2 m < 3.5 GeV s=7 ev m ± m < m ( m ± = m - GeV = m t GeV) < m -2L [47.583], [ ] ( = 6 GeV) L int b f f W b = 2.3 fb limits All limits at 95% CL L int m t < m b /m c + m c = 2.3 fb m t < m b + m W + m L int limits m < m t +m = 4.7 fb L int = 2 fb 5 < 3.5 GeV m t m t m t K. Rolbiecki (IF Madrid) SUSY, / 9

18 Outline Pinning down the stops Introduction 2 Pinning down the stops 3 SUSY or SM? 4 Summary K. Rolbiecki (IF Madrid) SUSY, / 9

19 Simulation Pinning down the stops simplified model assumes a decay chain t ± b W ( ) b l ν b fix m t m ± = 7 GeV or 5 GeV to ensure invisible b at this point everything is fixed by m t and m simulation using Herwig and CheckMAE/AOM see a talk by Jong Soo Kim after tea break includes production of pp t t, pp ± 2, pp + experimental studies covered: SM measurements (W W, W Z), Higgs, SUSY-EW searches (di-lepton, tri-lepton), stop searches (-2 leptons), squark and gluino searches (-2 leptons) at each point of the (m t, m ) grid, likelihood ratio statistic is calculated K. Rolbiecki (IF Madrid) SUSY, / 9

20 Atlas Higgs Pinning down the stops ± [ALAS-CONF-23-3] Higgs SR ± Searches included in the scan Atlas q and g Di-muon 7.7 ± (-2 `) [ALAS-CONF-23-62] Atlas Electroweak SR a ± (3 `) [arxiv:42.729] SR a ± SR a ± Description p s Luminosity Number Refs. [ev] [ fb ] of SR Atlas W + W [arxiv:2.2979] Cms W + W [arxiv:36.26] Cms W + W [arxiv:3.4698] Atlas Higgs [ALAS-CONF-23-3] Atlas Electroweak (2 `) [arxiv: ] Atlas q and g (-2 `) [ALAS-CONF-23-62] Atlas q and g razor (2 `) [ALAS-CONF-23-89] Atlas Electroweak (3 `) [arxiv:42.729] Atlas t ( `) [ALAS-CONF-23-37] Atlas t (2 `) [arxiv: ] Cms W ± Z [CMS-PAS2-6] Atlas W ± Z [ALAS-CONF-23-2] Atlas t! b [ALAS-CONF-244] K. Rolbiecki (IF Madrid) SUSY, / 9

21 Scan results Pinning down the stops K. Rolbiecki (IF Madrid) SUSY, / 9

22 Pinning down the stops Best fit compared to SM Study SR Obs Exp SM Best Best s.d. fit exp fit s.d Atlas W + W (7 ev) [arxiv:2.2979] Combined ± Cms W + W (7 ev) [arxiv:36.26] Combined ± Cms W + W (8 ev) [arxiv:3.4698] Combined 986 ± Atlas Higgs WW CR ± [ALAS-CONF-23-3] Higgs SR ± Atlas q and g Di-muon 7.7 ± (-2 `) [ALAS-CONF-23-62] Atlas Electroweak SR a ± (3 `) [arxiv:42.729] SR a ± SR a ± p s Luminosity Number Refs. [ev] [ fb ] of SR Description overall reduction of 2.3 in log-likelihood compared to SM at minimum Atlas W + W [arxiv:2.2979] Cms W + W [arxiv:36.26] Cms W best + W fit point: [arxiv:3.4698] Atlas Higgs [ALAS-CONF-23-3] Atlas Electroweak (2 `) m t 8 = GeV [arxiv: ] Atlas q and g (-2 `) [ALAS-CONF-23-62] Atlas q and g razor (2 `) m [ALAS-CONF-23-89] Atlas Electroweak (3 `) 8 = GeV [arxiv:42.729] Atlas t ( `) [ALAS-CONF-23-37] Atlas K. Rolbiecki t (2 `) (IF Madrid) [arxiv: ] SUSY, / 9

23 Outline SUSY or SM? Introduction 2 Pinning down the stops 3 SUSY or SM? 4 Summary K. Rolbiecki (IF Madrid) SUSY, / 9

24 SUSY or SM? Probing production polar angle observable using pseudorapidities of the final state leptons ( ) cos θll = tanh ηll 2 η ll = η l η l2 Moortgat-Pick, KR, attersall, arxiv:2.293 for stop and W W production, Normalized Events W W tt t t (22 GeV) * cosθll pp t t l + ν b l ν b pp W + W l + ν l ν cos θll is sensitive to the angular distributions of the initial state W s and t s K. Rolbiecki (IF Madrid) SUSY, / 9

25 Asymmetry of cos θ ll SUSY or SM? define an asymmetry using cos θ ll A = N( cos θ ll >.5) N( cos θ ll <.5) N tot forward vs central region stops asymmetry: A t =.52, SM only: A SM =.2, stops and SM: A SM+ t =.4 after 5 fb a 5-σ discrimination achievable at s = 3 ev at s = 8 ev a 3-σ difference with full data sample less prone to systematic errors than cross section alone Normalized Events standard deviations W W tt t t (22 GeV) * cosθll s 3 ev L fb K. Rolbiecki (IF Madrid) SUSY, / 9

26 SUSY or SM? Missing higer orders? p ll E Miss GeV jet veto efficiency crucial for understanding W W measurement other di-boson cross sections do not suffer from this problem including NNLL transverse momentum resummation could decrease discrepancy by 3-7% but cannot account for the whole excess Meade, Ramani, Zeng arxiv: employing soft collinear effective theory reduces scale variation and renders theory prediction compatible with experiment Jaiswal, Okui arxiv: Reweighted MC σ W veto W [pb] p ll E Miss GeV heory (WW only) ALAS MC CMS predicti 6 s = 8 ev p veto = 25 GeV R =.4 p veto = 3 GeV R =.5 K. Rolbiecki (IF Madrid) SUSY, / 9

27 Outline Summary Introduction 2 Pinning down the stops 3 SUSY or SM? 4 Summary K. Rolbiecki (IF Madrid) SUSY, / 9

28 Summary Summary ALAS and CMS observed consistent excesses in W W production certainly not a statistical fluctuation systematics cannot be ruled out yet, missing NNLL? another hint from tri-lepton search and Higgs measurements can be attributed to new physics, e.g. supersymmetric stops light stops markedly improve agreement with data different searches point to the same region in parameter space distinction from the SM possible using angular distributions outlook: study of other simplified models, decay chains, etc. including additional constraints: dark matter, low energy, EWP K. Rolbiecki (IF Madrid) SUSY, / 9

29 BACKUP K. Rolbiecki (IF Madrid) SUSY, / 6

30 LHC vs light stops LHC started constraining light stops for us the channel with intermediate chargino is interesting m 2 used to suppress t t background this limits sensitivity of the search in region with (almost) off-shell W more constraints on 3-body, 4-body, FV stop decays also from non-stop searches e.g. Yu ea, arxiv:2.2997; Krizka ea, arxiv: m m t t production, BR( t L dt = 2.3 fb, ± b) = ALAS Preliminary s = 8 ev SUSY limit (±σtheory ) limit (±σ exp ) limit 2L [3fb ] All limits at 95% CL ± m( t )-m( ) = GeV m t t t production, BR( t W ALAS Preliminary L dt = 2.3 fb, s = 8 ev SUSY limit (±σ ) theory limit (±σ exp ) All limits at 95% CL b) = ± m( t ) << m( ) m t < m b m t + m W > m t + m + m m t K. Rolbiecki (IF Madrid) SUSY, / 6

31 Rapidity and pseudorapidity Rapidity y = ( ) E + 2 log pl E p L = log E + p L m 2 + p 2 Rapidity is additive under Lorentz boosts along the beam direction he difference in rapidity of two particles is invariant under boosts along the beam axis For massless particles we have Define pseudorapidity as y = 2 log ( + cos θ cos θ ) = log tan θ 2 η = log tan θ 2 Back to talk K. Rolbiecki (IF Madrid) SUSY, / 6

32 Modified distributions entries / 5 GeV 4 Data 2 t t t, ( = 2,5) SM without H H WW t t 5 Error entries / 5 GeV 25 Data t t, t ( = 2,5) 2 SM without H 5 5 H WW t t 5 Error max p pmin entries / 5 GeV Data t t t, ( = 2,5) SM without H H WW t t 5 Error entries / 5 GeV Data t t t, ( = 2,5) SM without H H WW t t 5 Error pll m ll K. Rolbiecki (IF Madrid) SUSY, / 6

33 Modified distributions entries / 5 GeV 4 Data 2 t t t (, = 22,5) SM without H H WW t t 5 Uncertainty entries / 5 GeV 25 Data t t ( t, = 22,5) 2 SM without H H WW 5 t t 5 Uncertainty max p pmin entries / 5 GeV Data t t t (, = 22,5) SM without H H WW t t 5 Uncertainty entries / 5 GeV Data t t t (, = 22,5) SM without H H WW t t 5 Uncertainty pll m ll K. Rolbiecki (IF Madrid) SUSY, / 6

34 Other constraints heavy Higgs boson requires rather light stops can be overcome if the stops are split: m t R = 95 GeV, m t L = 2 GeV, A t = 2 GeV m h = 25.6 GeV, bonus: R γγ =.5 Rγγ SM gaugino parameters for correct chargino and LSP M = 5 GeV, M 2 = 9 GeV, µ = 25 GeV and tan β = 5 light stuff having the following masses: m t = 23.7 GeV, m = 4.9 GeV and m ± = 89.5 GeV low energy observables evaluated as BR(B X s γ) = and BR(B s µµ) = needs = GeV m br basic consistency can be ensured dark matter relic density could be regulated by light right-handed sleptons K. Rolbiecki (IF Madrid) SUSY, / 6