Presentation is loading. Please wait.

Presentation is loading. Please wait.

Max-Planck-Institute for Physics Werner-Heisenberg-Institut Munich André H. Hoang 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Soft-Collinear-Effective.

Published by Modified over 9 years ago

Similar presentations

Presentation on theme: "Max-Planck-Institute for Physics Werner-Heisenberg-Institut Munich André H. Hoang 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Soft-Collinear-Effective."— Presentation transcript:

1 Max-Planck-Institute for Physics Werner-Heisenberg-Institut Munich André H. Hoang 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Soft-Collinear-Effective Theory and Jets at Colliders

2 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Outline Jets physics and precision QCD Theoretical tools Soft–Collinear–Effective–Theory (SCET) Overview of achievements Isolated Drell-Yan Top mass from invariant reconstruction Conclusion André H. Hoang

3 6th Vienna Central European Seminar, Nov 27 - 29, 2009 LHC runs! André H. Hoang

4 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Jet Physics Understanding of jets is essential in the search for the Higgs boson and for new physics at the LHC André H. Hoang Not this kind of jets!

5 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Jet Physics Understanding of jets is essential in the search for the Higgs boson and for new physics at the LHC André H. Hoang Jet: cluster of energetic hadrons leaving tracks xxx and energy deposits in the detectors.

6 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Jet Physics Understanding of jets is essential in the search for the Higgs boson and for new physics at the LHC André H. Hoang QCD machinery

7 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Jet Physics Our level of understanding of jets at the conceptual level is reflected in our ability to do precision measurements of SM parameters: André H. Hoang

8 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Jet Physics Our level of understanding of jets at the conceptual level is reflected in our ability to describe standard processes: ALEPH, DELPHI, L3, OPAL, SLD André H. Hoang

9 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Theoretical Tools André H. Hoang

10 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Theoretical Tools André H. Hoang QCD Factorization: Collins, Soper,Sterman; Bodwin e.g. Drell-Yan inclusive production nonperturbative parton distributions (process independent) perturbative short-distance cross section (process dependent)

11 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Theoretical Tools André H. Hoang QCD Factorization: Collins, Soper,Sterman; Bodwin e.g. Drell-Yan inclusive production near threshold Sterman; Catani, Trentadue

12 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Theoretical Tools André H. Hoang QCD Factorization: Collins, Soper,Sterman; Bodwin e.g. Drell-Yan inclusive production near threshold Sterman; Catani, Trentadue not directly measurable (selection cuts, beam remnant) very few events size of power corrections

13 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Theoretical Tools André H. Hoang Monte Carlo Event Generators: Universal tool to describe/predict experimental distributions and rates depending on e.g. selection cuts. parton shower LL(+NLO) perturbative non- perturbative

14 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Theoretical Tools André H. Hoang Monte Carlo Event Generators: Universal tool to describe/predict experimental distributions and rates depending on e.g. selection cuts. parton shower LL(+NLO) perturbative relies on LL (partly NLO) parton shower approximation shower cut represents an infrared regularization (factorization) scheme that is yet unspecified non- perturbative

15 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Monte Carlo Generators Strong coupling from event shapes: Almost all measurements from event shapes use the MC hadronization models to determine hadronization corrections to multiloop partonic computations. Herwig 6.2 Pythia 6.1 parton-level prediction hadron-level prediction Q = 35 GeV (JADE) Dissertori, et al. Becher, Schwartz André H. Hoang

16 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Monte Carlo Generators Top mass measurements: p p t t - W W b b - jet Invariant mass reconstruction: scheme dependent André H. Hoang

17 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Monte Carlo Generators Top mass measurements: p p t t - W W b b - jet Invariant mass reconstruction: André H. Hoang

18 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Soft-Collinear-Effective Theory André H. Hoang Doing jet physics using the concept of mode and scale separation at the Lagrangian and operator level More transparent access to jet physics problems. SCET is an alternative approach to jet physics. Feynman rules systematic power counting New proofs of factorization for processes not yet considered in the classic jet approach. Easier (and field theoretic) access to power corrections and subleading twist terms. IR-log resummation (soft+collinear) through renormalization. Precision QCD at the LHC.

19 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Soft-Collinear-Effective Theory André H. Hoang Bauer, Fleming, Pirjol, Stewart First developed for single jet problems in B-physics. Light-cone coordinates: 2000-2001 jet invariant mass

20 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Soft-Collinear-Effective Theory André H. Hoang jet invariant mass Bauer, Fleming, Pirjol, Stewart First developed for single jet problems in B-physics. 2000-2001 Separation of modes:

21 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Soft-Collinear-Effective Theory André H. Hoang

22 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Soft-Collinear-Effective Theory André H. Hoang Lagrangian: similar to QCD Lagrangian Collinear Lagrangian: small large Bauer, Fleming, Pirjol, Stewart

23 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Soft-Collinear-Effective Theory André H. Hoang Currents: jet field n-collinear Wilson line Jet fields are gauge invariant under collinear gauge transformations.

24 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Soft-Collinear-Effective Theory André H. Hoang Factorization: Soft field redefinition: soft-collinear decoupling

25 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Soft-Collinear-Effective Theory André H. Hoang Factorization: Soft field redefinition: soft-collinear decoupling soft-collinear decoupling at the operator level

26 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Soft-Collinear-Effective Theory André H. Hoang Factorization: Soft field redefinition: soft-collinear decoupling soft-collinear decoupling at the operator level applies to any number of final state jets can be generalized to initial state jets (SCET-II)

27 6th Vienna Central European Seminar, Nov 27 - 29, 2009 SCET: Conceptual Work André H. Hoang Subleading Power: Bauer, Fleming, Pirjol, Stewart0011336 Bauer, Stewart0107001 Bauer, Pirjol, Stewart0109045 Bauer, Pirjol, Stewart0011336 Pirjol, Stewart0211251 Beneke, Feldmann0008255 Beneke, Chapovsky, etal0206152 Chay, Kim0205117 SCET with mass: Leibovich, Ligeti, Wise0303099 Boos, Feldmann, Mannel0504005 0-bin subtraction: Manohar, Stewart0605001 Idilbi, Mehen0707.1101 Glauber gluons: Liu, Ma0802.2973 Idilbi, Majumder0808.1087 Renormalons: Hoang, Stewart0709.3519 All order infrared structure: Becher, Neubert0903.1126 Becher, Neubert0904.1021 Feroglia, Neubert, etal0908.3676 Feroglia, Neubert, etal0908.3676 k factorization: Chay0711.4296 T Nandi, Li0704.3790 Parton shower: Bauer, Schwartz0607296 Bauer, Tackmann, Thaler0705.1719 Bauer, Tackmann0801.4028 Chiu, Fuhrer, Hoang etal0901.1332

28 6th Vienna Central European Seminar, Nov 27 - 29, 2009 SCET: Collider Applications André H. Hoang Manohar0309176 Chay, Kim0511066 Chen, Idilbi, Ji0607003 Becher, Neubert, Pejak0607228 Chay, Kim0205117 Bauer, Lee, Manohar, etal0309278 Schwartz0709.2866 Zu, Sheng, etal0903.5047 Ahrens, Becher, etal0809.4298 Chiu, Kelley, Manohar0709.2709 Leibovich, Liu0705.3230 Idilbi, Ji0501006 Becher, Neubert, Xu0710.0680 Stewart, Tackmann, etal0910.0467 Hoang, Stewart0709.3519 Bauer, Fleming,Lee etal0801.4569 Becher, Schwartz0803.0342 Hoang, Kluth0806.3852 Hornig, Lee, Ovanesyan0901.3780 Idilbi, Ji, Ma, Yuan0509294 Mantry, Petriello0911.4135 Chiu, Kelley, Manohar0712.0396 Chiu, Kelley, Manohar0806.1240 Chiu, Fuehrer, etal0909.0947 Fleming, Leibovich,etal0607121 Bauer, Lange0905.4739 Becher, Schwartz0911.0681 Fleming, Hoang, etal0703207 Fleming, Hoang, etal0711.2079 Jain, Scimemi, Stewart0801.0743

29 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Isolated Drell-Yan André H. Hoang Stewart, Tackmann, Waalewijn 0910.0467 Drell-Yan with central jet veto. Beam thrust: event-shape-like and suitable for analytic computations contribution of unmeasured beam remnant negligible cut on vetoes high p jets T beam functions factorization for related to initial state parton shower PDF

30 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Top Reconstruction and Event Shapes. Possibility to define reconstruction prescription such that non- perturbative effects can be extracted from event shapes. Fleming, Mantry, Stewart, AHH André H. Hoang

31 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Top Reconstruction and Event Shapes. Invariant mass distribution Jet mass, thrust distribution for thrust, jet masses André H. Hoang

32 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Top Reconstruction and Event Shapes. Fleming, Mantry, Stewart, AHH Top Quark Light quarks universal ! André H. Hoang

33 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Top Reconstruction and Event Shapes. Fleming, Mantry, Stewart, AHH Top Quark Light quarks universal ! André H. Hoang

34 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Invariant Mass Peak and Top Mass Fleming, Mantry, Stewart, AHH best mass scheme: jet mass first moment of the soft function André H. Hoang

35 6th Vienna Central European Seminar, Nov 27 - 29, 2009. Abbate, Fickinger, Mateu, Stewart, AHH preliminary 488 bins NNNLL’ NNNLL NNLL’ NNLL NLL’ André H. Hoang

36 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Conclusions Approach to jet physics and high energy scattering processes using effective field theory. Alternative and compatible approach to classic jet physics. Modularity: SCET can be combined with HQET, NRQCD, Chiral p.th. Initiates novel applications (conceptual & computational). Aim: Precision QCD Physics at LHC Soft-Collinear-Effective-Theory: Stay tuned! André H. Hoang

Download ppt "Max-Planck-Institute for Physics Werner-Heisenberg-Institut Munich André H. Hoang 6th Vienna Central European Seminar, Nov 27 - 29, 2009 Soft-Collinear-Effective."

Similar presentations

First results from the ATLAS experiment at the LHC

First results from the ATLAS experiment at the LHC
Maria Jose Costa, CERN DIS 2004 April 14 th -18 th 2004, Slovakia b -mass effects in 3 and 4 jets events with the DELPHI detector at LEP b u,d,s.

Maria Jose Costa, CERN DIS 2004 April 14 th -18 th 2004, Slovakia b -mass effects in 3 and 4 jets events with the DELPHI detector at LEP b u,d,s.
Ignazio Scimemi Universidad Complutense de Madrid (UCM) In collaboration with A. Idilbi, M. García Echevarría A.I., I.S. Phys. Lett. B695 (2011) 463, M.G.E.,

Ignazio Scimemi Universidad Complutense de Madrid (UCM) In collaboration with A. Idilbi, M. García Echevarría A.I., I.S. Phys. Lett. B695 (2011) 463, M.G.E.,
ATLAS measurements of jets and heavy flavor produced in association with W and Z bosons Pierre-Hugues Beauchemin on behalf of the ATLAS Collaboration Tufts.

ATLAS measurements of jets and heavy flavor produced in association with W and Z bosons Pierre-Hugues Beauchemin on behalf of the ATLAS Collaboration Tufts.
1 Inclusive B Decays - Spectra, Moments and CKM Matrix Elements Presented by Daniel Cronin-Hennessy University of Rochester (CLEO Collaboration) ICHEP.

1 Inclusive B Decays - Spectra, Moments and CKM Matrix Elements Presented by Daniel Cronin-Hennessy University of Rochester (CLEO Collaboration) ICHEP.
Nonperturbative Effects from Soft-Collinear Effective Theory Christopher Lee Institute for Nuclear Theory, University of Washington 12 January 2006.

Nonperturbative Effects from Soft-Collinear Effective Theory Christopher Lee Institute for Nuclear Theory, University of Washington 12 January 2006.
Iain Stewart MIT Iain Stewart MIT Nonleptonic Decays and the Soft Collinear Effective Theory Super B Factory Workshop, Hawaii, 2004.

Iain Stewart MIT Iain Stewart MIT Nonleptonic Decays and the Soft Collinear Effective Theory Super B Factory Workshop, Hawaii, 2004.
Resummation of Large Logs in DIS at x->1 Xiangdong Ji University of Maryland SCET workshop, University of Arizona, March 2-4, 2006.

Resummation of Large Logs in DIS at x->1 Xiangdong Ji University of Maryland SCET workshop, University of Arizona, March 2-4, 2006.
1 Hadronic In-Situ Calibration of the ATLAS Detector N. Davidson The University of Melbourne.

1 Hadronic In-Situ Calibration of the ATLAS Detector N. Davidson The University of Melbourne.
A Comparison of Three-jet Events in p Collisions to Predictions from a NLO QCD Calculation Sally Seidel QCD’04 July 2004.

A Comparison of Three-jet Events in p Collisions to Predictions from a NLO QCD Calculation Sally Seidel QCD’04 July 2004.
1 SCET for Colliders Matthias Neubert Cornell University LoopFest V, SLAC – June 21, 2006 Based on work with Thomas Becher (FNAL) and Ben Pecjak (Siegen)

1 SCET for Colliders Matthias Neubert Cornell University LoopFest V, SLAC – June 21, 2006 Based on work with Thomas Becher (FNAL) and Ben Pecjak (Siegen)
Ahmad Idilbi Uni. Regensburg TUM November 30, 2011 M. G. Echevarria, A. Idilbi, I. Scimemi, arXive: :1111.4996[hep-ph] M. G. Echevarria, A. Idilbi, I.

Ahmad Idilbi Uni. Regensburg TUM November 30, 2011 M. G. Echevarria, A. Idilbi, I. Scimemi, arXive: : [hep-ph] M. G. Echevarria, A. Idilbi, I.
From Factorization to Resummation for Single Top Production at the LHC with Effective Theory Chong Sheng Li ITP, Peking Unversity Based on the work with.

From Factorization to Resummation for Single Top Production at the LHC with Effective Theory Chong Sheng Li ITP, Peking Unversity Based on the work with.
Sung-Won Lee 1 Study of Jets Production Association with a Z boson in pp Collision at 7 and 8 TeV with the CMS Detector Kittikul Kovitanggoon Ph. D. Thesis.

Sung-Won Lee 1 Study of Jets Production Association with a Z boson in pp Collision at 7 and 8 TeV with the CMS Detector Kittikul Kovitanggoon Ph. D. Thesis.
 s determination at LEP Thorsten Wengler University of Manchester DIS’06, Tsukuba, Japan.

 s determination at LEP Thorsten Wengler University of Manchester DIS’06, Tsukuba, Japan.
Working group C summary Hadronic final states theory Mrinal Dasgupta.

Working group C summary Hadronic final states theory Mrinal Dasgupta.
QCD Resummations for Hadronic Collisions Werner Vogelsang RBRC and BNL Nuclear Theory RHIC/AGS Users’ Meeting 2005.

QCD Resummations for Hadronic Collisions Werner Vogelsang RBRC and BNL Nuclear Theory RHIC/AGS Users’ Meeting 2005.
Perturbative Stability of V + Jets Ratios and “Data Driven Background” Analyses Lance Dixon (CERN & SLAC) & for the BlackHat collaboration C. Berger, Z.

Perturbative Stability of V + Jets Ratios and “Data Driven Background” Analyses Lance Dixon (CERN & SLAC) & for the BlackHat collaboration C. Berger, Z.
Measurement of α s at NNLO in e+e- annihilation Hasko Stenzel, JLU Giessen, DIS2008.

Measurement of α s at NNLO in e+e- annihilation Hasko Stenzel, JLU Giessen, DIS2008.
Cambridge 19 th April1 Comparisons between Event Generators and Data Peter Richardson IPPP, Durham University.

Cambridge 19 th April1 Comparisons between Event Generators and Data Peter Richardson IPPP, Durham University.

Similar presentations

Ads by Google