Post on 15-Oct-2020
transcript
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Making Sense of Jet RadiationA Series of Great Lessons
Tilman Plehn
Universitat Heidelberg
IPMU 3/2015
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
WBF Higgs production
Higgs production with jets [w/ Rainwater, Zeppenfeld (1998)]
– the Pheno team (1997)
–
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
WBF Higgs production
Higgs production with jets [w/ Rainwater, Zeppenfeld (1998)]
– first paper to use WBF forward jets for light Higgs [ask Dieter and Dave how it all happened]
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
WBF Higgs production
Higgs production with jets [w/ Rainwater, Zeppenfeld (1998)]
– first paper to use WBF forward jets for light Higgs [ask Dieter and Dave how it all happened]
– technical advances crucial [jet veto from 3jττ process]
– detector simulations by hand [correct is what experimentalists can reproduce]
– b and τ decays fully simulated
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
WBF Higgs production
Higgs production with jets [w/ Rainwater, Zeppenfeld (1998)]
– first paper to use WBF forward jets for light Higgs [ask Dieter and Dave how it all happened]
– technical advances crucial [jet veto from 3jττ process]
– detector simulations by hand [correct is what experimentalists can reproduce]
– b and τ decays fully simulated
⇒ Great LHC ideas also need hard work
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
WBF Higgs production
Higgs production with jets [w/ Rainwater, Zeppenfeld (1998)]
– first paper to use WBF forward jets for light Higgs [ask Dieter and Dave how it all happened]
– technical advances crucial [jet veto from 3jττ process]
– detector simulations by hand [correct is what experimentalists can reproduce]
– b and τ decays fully simulated
⇒ Great LHC ideas also need hard work
What to do with jets
– background control makes the difference
– tagging jets
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
WBF Higgs production
Higgs production with jets [w/ Rainwater, Zeppenfeld (1998)]
– first paper to use WBF forward jets for light Higgs [ask Dieter and Dave how it all happened]
– technical advances crucial [jet veto from 3jττ process]
– detector simulations by hand [correct is what experimentalists can reproduce]
– b and τ decays fully simulated
⇒ Great LHC ideas also need hard work
What to do with jets
– background control makes the difference
– tagging jets
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
WBF Higgs production
Higgs production with jets [w/ Rainwater, Zeppenfeld (1998)]
– first paper to use WBF forward jets for light Higgs [ask Dieter and Dave how it all happened]
– technical advances crucial [jet veto from 3jττ process]
– detector simulations by hand [correct is what experimentalists can reproduce]
– b and τ decays fully simulated
⇒ Great LHC ideas also need hard work
What to do with jets
– background control makes the difference
– tagging jets
– central (mini-) jet veto
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
WBF Higgs production
Higgs production with jets [w/ Rainwater, Zeppenfeld (1998)]
– first paper to use WBF forward jets for light Higgs [ask Dieter and Dave how it all happened]
– technical advances crucial [jet veto from 3jττ process]
– detector simulations by hand [correct is what experimentalists can reproduce]
– b and τ decays fully simulated
⇒ Great LHC ideas also need hard work
What to do with jets
– background control makes the difference
– tagging jets
– central (mini-) jet veto
⇒ Jets are your friends
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Catpiss collaboration
SUSY off-shell diagrams [w/ Kilian, Krauss, Ohl, TP, Rainwater, Reuter, Schumann (2005)]
– from Madgraph to SMadgraphalso Sherpa → Sherpino, Whizard → SWhizard
– including off-shell diagrams...
...up to bbbbχ0χ0 production...
...plus reference tables...
...15 pages of them...
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Catpiss collaboration
SUSY off-shell diagrams [w/ Kilian, Krauss, Ohl, TP, Rainwater, Reuter, Schumann (2005)]
– from Madgraph to SMadgraphalso Sherpa → Sherpino, Whizard → SWhizard
– including off-shell diagrams...
...up to bbbbχ0χ0 production...
...plus reference tables...
...15 pages of them...
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Catpiss collaboration
SUSY off-shell diagrams [w/ Kilian, Krauss, Ohl, TP, Rainwater, Reuter, Schumann (2005)]
– from Madgraph to SMadgraphalso Sherpa → Sherpino, Whizard → SWhizard
– including off-shell diagrams...
...up to bbbbχ0χ0 production...
...plus reference tables...
...15 pages of them...
⇒ BSM physics deserves proper simulation
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Catpiss collaboration
SUSY off-shell diagrams [w/ Kilian, Krauss, Ohl, TP, Rainwater, Reuter, Schumann (2005)]
– from Madgraph to SMadgraphalso Sherpa → Sherpino, Whizard → SWhizard
– including off-shell diagrams...
...up to bbbbχ0χ0 production...
...plus reference tables...
...15 pages of them...
⇒ BSM physics deserves proper simulation
SUSY in weak boson fusion [w/ Cho, Kanzai, TP, Rainwater, Stelzer (2006)]
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Catpiss collaboration
SUSY off-shell diagrams [w/ Kilian, Krauss, Ohl, TP, Rainwater, Reuter, Schumann (2005)]
– from Madgraph to SMadgraphalso Sherpa → Sherpino, Whizard → SWhizard
– including off-shell diagrams...
...up to bbbbχ0χ0 production...
...plus reference tables...
...15 pages of them...
⇒ BSM physics deserves proper simulation
SUSY in weak boson fusion [w/ Cho, Kanzai, TP, Rainwater, Stelzer (2006)]
– meant to test SUSY properties
– Majorana property in χ±χ± production
– first task: huge squark/gluino background
– second task: proper UV behavior
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Catpiss collaboration
SUSY off-shell diagrams [w/ Kilian, Krauss, Ohl, TP, Rainwater, Reuter, Schumann (2005)]
– from Madgraph to SMadgraphalso Sherpa → Sherpino, Whizard → SWhizard
– including off-shell diagrams...
...up to bbbbχ0χ0 production...
...plus reference tables...
...15 pages of them...
⇒ BSM physics deserves proper simulation
SUSY in weak boson fusion [w/ Cho, Kanzai, TP, Rainwater, Stelzer (2006)]
– meant to test SUSY properties
– Majorana property in χ±χ± production
– first task: huge squark/gluino background
– second task: proper UV behavior
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Catpiss collaboration
SUSY off-shell diagrams [w/ Kilian, Krauss, Ohl, TP, Rainwater, Reuter, Schumann (2005)]
– from Madgraph to SMadgraphalso Sherpa → Sherpino, Whizard → SWhizard
– including off-shell diagrams...
...up to bbbbχ0χ0 production...
...plus reference tables...
...15 pages of them...
⇒ BSM physics deserves proper simulation
SUSY in weak boson fusion [w/ Cho, Kanzai, TP, Rainwater, Stelzer (2006)]
– meant to test SUSY properties
– Majorana property in χ±χ± production
– first task: huge squark/gluino background
– second task: proper UV behavior
– at 100 TeV? [Takeuchi etal, Wang etal]
WBF σ(χiχj+jj) = ●<10-4 || ●10-3 || ●10-2 || ●10-1 || ●1 || ●>10 pb
-4 -3 -2 -1 0 1 2 3 4
m@TeVD1234
M1@Te
VD
0
1
2
3
4
M2@Te
VD
tan β=10
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Catpiss collaboration
SUSY off-shell diagrams [w/ Kilian, Krauss, Ohl, TP, Rainwater, Reuter, Schumann (2005)]
– from Madgraph to SMadgraphalso Sherpa → Sherpino, Whizard → SWhizard
– including off-shell diagrams...
...up to bbbbχ0χ0 production...
...plus reference tables...
...15 pages of them...
⇒ BSM physics deserves proper simulation
SUSY in weak boson fusion [w/ Cho, Kanzai, TP, Rainwater, Stelzer (2006)]
– meant to test SUSY properties
– Majorana property in χ±χ± production
– first task: huge squark/gluino background
– second task: proper UV behavior
– at 100 TeV? [Takeuchi etal, Wang etal]
WBF σ(χiχj+jj) = ●<10-4 || ●10-3 || ●10-2 || ●10-1 || ●1 || ●>10 pb
-4 -3 -2 -1 0 1 2 3 4
m@TeVD1234
M1@Te
VD
0
1
2
3
4
M2@Te
VD
tan β=10
⇒ Attobarn is a unit for LHC rates
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Tagging jet correlations
Mother of tagging jet analyses [w/ Mawatari, Li (2009)]
– one of my most fun papers... [TP, Rainwater, Zeppenfeld (2001)]
0
0.002
0.004
0.006
0 50 100 150 6\jj
dm/d6\jj (HAoo) [fb]
SM
CP even
CP oddmH=120 GeV
ZAoo
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Tagging jet correlations
Mother of tagging jet analyses [w/ Mawatari, Li (2009)]
– one of my most fun papers... [TP, Rainwater, Zeppenfeld (2001)]
...but not the proper job...
– ∆φjj sensitive to vertex structure
φ1 + φ2 sensitive to spin-2
– UV sensitivity: pmaxT cut, form factor, model at face value?
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Tagging jet correlations
Mother of tagging jet analyses [w/ Mawatari, Li (2009)]
– one of my most fun papers... [TP, Rainwater, Zeppenfeld (2001)]
...but not the proper job...
– ∆φjj sensitive to vertex structure
φ1 + φ2 sensitive to spin-2
– UV sensitivity: pmaxT cut, form factor, model at face value?
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Tagging jet correlations
Mother of tagging jet analyses [w/ Mawatari, Li (2009)]
– one of my most fun papers... [TP, Rainwater, Zeppenfeld (2001)]
...but not the proper job...
– ∆φjj sensitive to vertex structure
φ1 + φ2 sensitive to spin-2
– UV sensitivity: pmaxT cut, form factor, model at face value?
– I am too stupid for this paper
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Tagging jet correlations
Mother of tagging jet analyses [w/ Mawatari, Li (2009)]
– one of my most fun papers... [TP, Rainwater, Zeppenfeld (2001)]
...but not the proper job...
– ∆φjj sensitive to vertex structure
φ1 + φ2 sensitive to spin-2
– UV sensitivity: pmaxT cut, form factor, model at face value?
– I am too stupid for this paper
Going slowly [Englert, Goncalves, Mawatari, TP (2012), Godbole... (2013), Maltoni, Mawatari... (2013)]
– step back: it’s just Cabibbo angles
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Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Tagging jet correlations
Mother of tagging jet analyses [w/ Mawatari, Li (2009)]
– one of my most fun papers... [TP, Rainwater, Zeppenfeld (2001)]
...but not the proper job...
– ∆φjj sensitive to vertex structure
φ1 + φ2 sensitive to spin-2
– UV sensitivity: pmaxT cut, form factor, model at face value?
– I am too stupid for this paper
Going slowly [Englert, Goncalves, Mawatari, TP (2012), Godbole... (2013), Maltoni, Mawatari... (2013)]
– step back: it’s just Cabibbo angles
0 2 4 60
0.2
0.4
0.6
Γ d∆φ1 dΓ
0-
D5
0+
D5
0+
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2+
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0.2
0.4
0.6
σ d∆φjj
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0-
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0+
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0+
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Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Tagging jet correlations
Mother of tagging jet analyses [w/ Mawatari, Li (2009)]
– one of my most fun papers... [TP, Rainwater, Zeppenfeld (2001)]
...but not the proper job...
– ∆φjj sensitive to vertex structure
φ1 + φ2 sensitive to spin-2
– UV sensitivity: pmaxT cut, form factor, model at face value?
– I am too stupid for this paper
Going slowly [Englert, Goncalves, Mawatari, TP (2012), Godbole... (2013), Maltoni, Mawatari... (2013)]
– step back: it’s just Cabibbo angles
– few observables key...
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Tops plus jets
Heavy quarks plus jets [w/ Mukhopadhyay (2013)]
– t t and bb + 2 QCD jets
– threshold production necessary
m-1
dm
/d(q
1-q 2
)
(q1-q2)
Mt}t < 400 GeV
Mt}t > 600 GeV
0.06
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0.36
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)
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Mt}t < 400 GeV
Mt}t > 600 GeV
0.12
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0.16
0.18
0.2
-/ -//2 0 //2 /
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Tops plus jets
Heavy quarks plus jets [w/ Mukhopadhyay (2013)]
– t t and bb + 2 QCD jets
– threshold production necessary
dm/d
(q1-q 2
) (fb
/0.3
14 ra
dian
)
(q1-q2)
Mb}b > 400 GeVb}b + 2-jets Total
q q b}bq g b}bg g b}b
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an)
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b}b + 2-jets Totalq q b}bq g b}bg g b}b
50
250
450
650
850
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-/ -//2 0 //2 /
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Tops plus jets
Heavy quarks plus jets [w/ Mukhopadhyay (2013)]
– t t and bb + 2 QCD jets
– threshold production necessary– series in ∆φ truncated by available helicities [Buckley, TP, Ramsey-Musolf]
dσd∆φ
= A0 + A1 cos ∆φ + A2 cos(2∆φ)
– sign of A2 set by spin of (s)tops
– 3-jet merged stronger correlated than 2-jets exclusive
⇒ The fun will start with Run2
0 0.5 1 1.5 2 2.5 30
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0.06
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Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Tops plus jets
Heavy quarks plus jets [w/ Mukhopadhyay (2013)]
– t t and bb + 2 QCD jets
– threshold production necessary– series in ∆φ truncated by available helicities [Buckley, TP, Ramsey-Musolf]
dσd∆φ
= A0 + A1 cos ∆φ + A2 cos(2∆φ)
– sign of A2 set by spin of (s)tops
– 3-jet merged stronger correlated than 2-jets exclusive
⇒ The fun will start with Run2
Heavy quarks plus jets [w/ Nakamura (2015)]
– CKKW-L merging up to 3 jets [MLM too time consuming]
– comparison of 1,2,3 hard jets
-3 -2 -1 0 1 2 3
0.10
0.15
0.20
DΦH1,2L1
�Nd
N�dD
Φ
k¦
>30GeV, 3-parton
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Tops plus jets
Heavy quarks plus jets [w/ Mukhopadhyay (2013)]
– t t and bb + 2 QCD jets
– threshold production necessary– series in ∆φ truncated by available helicities [Buckley, TP, Ramsey-Musolf]
dσd∆φ
= A0 + A1 cos ∆φ + A2 cos(2∆φ)
– sign of A2 set by spin of (s)tops
– 3-jet merged stronger correlated than 2-jets exclusive
⇒ The fun will start with Run2
Heavy quarks plus jets [w/ Nakamura (2015)]
– CKKW-L merging up to 3 jets [MLM too time consuming]
– comparison of 1,2,3 hard jets
-3 -2 -1 0 1 2 3
0.10
0.15
0.20
DΦH1,2L1
�Nd
N�dD
Φ
pT>30GeV, ³2jets
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Tops plus jets
Heavy quarks plus jets [w/ Mukhopadhyay (2013)]
– t t and bb + 2 QCD jets
– threshold production necessary– series in ∆φ truncated by available helicities [Buckley, TP, Ramsey-Musolf]
dσd∆φ
= A0 + A1 cos ∆φ + A2 cos(2∆φ)
– sign of A2 set by spin of (s)tops
– 3-jet merged stronger correlated than 2-jets exclusive
⇒ The fun will start with Run2
Heavy quarks plus jets [w/ Nakamura (2015)]
– CKKW-L merging up to 3 jets [MLM too time consuming]
– comparison of 1,2,3 hard jets
-3 -2 -1 0 1 2 3
0.10
0.15
0.20
DΦH1,2L1
�Nd
N�dD
Φ
pT>30GeV, ³2jets
⇒ It helps to get your LHC tools right
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Tops plus jets
Heavy quarks plus jets [w/ Mukhopadhyay (2013)]
– t t and bb + 2 QCD jets
– threshold production necessary– series in ∆φ truncated by available helicities [Buckley, TP, Ramsey-Musolf]
dσd∆φ
= A0 + A1 cos ∆φ + A2 cos(2∆φ)
– sign of A2 set by spin of (s)tops
– 3-jet merged stronger correlated than 2-jets exclusive
⇒ The fun will start with Run2
Heavy quarks plus jets [w/ Nakamura (2015)]
– CKKW-L merging up to 3 jets [MLM too time consuming]
– comparison of 1,2,3 hard jets
⇒ It helps to get your LHC tools right
Jet Radiation
Tilman Plehn
WBF
Catpiss
Tagging jets
Tops
Outlook
Thank you, Kaoru!
Great LHC ideas also beed hard work
Jets are your friends
BSM physics deserves proper simulation
Attobarn is a unit for LHC rates
I am too stupid for this paper
The fun will start with Run2
It helps to get your LHC tools right