W-Jet Tagging: Optimizing the Identification of Boosted Hadronically-Decaying W Bosons
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| dc.contributor.author |
Cui, Yanou |
|
| dc.contributor.author |
Han, Zhenyu
|
|
| dc.contributor.author |
Schwartz, Matthew D
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|
| dc.date.accessioned |
2012-01-30T19:19:25Z |
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| dc.date.issued |
2011 |
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| dc.identifier.citation |
Cui, Yanou, Zhenyu Han, and Matthew D. Schwartz. 2011. W-jet tagging: optimizing the identification of boosted hadronically-decaying W bosons. Physical Review D 83(7): 074023. |
en_US |
| dc.identifier.issn |
1550-7998 |
en_US |
| dc.identifier.uri |
http://nrs.harvard.edu/urn-3:HUL.InstRepos:8063806 |
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| dc.description.abstract |
A method is proposed for distinguishing highly boosted hadronically-decaying \(W's\) \((W jets)\) from QCD-jets using jet substructure. Previous methods, such as the filtering/mass-drop method, can give a factor of \(\sim 2\) improvement in \(S/\sqrt{B}\) for jet \(p_T \ge 200 GeV\). In contrast, a multivariate approach including new discriminants such as \(R\) cores, which characterize the shape of the \(W\) jet, subjet planar flow, and grooming-sensitivities is shown to provide a much larger factor of \(\sim 5\) improvement in \(S/\sqrt{B}\). For longitudinally polarized \(W's\), such as those coming from many new physics models, the discrimination is even better. Comparing different Monte Carlo simulations, we observe a sensitivity of some variables to the underlying event; however, even with a conservative estimates, the multivariate approach is very powerful. Applications to semileptonic \(WW\) resonance searches and all-hadronic \(W+jet\) searches at the LHC are also discussed. Code implementing our \(W-je\)t tagging algorithm is publicly available at http://jets.physics.harvard.edu/wtag. |
en_US |
| dc.description.sponsorship |
Physics |
en_US |
| dc.language.iso |
en_US |
en_US |
| dc.publisher |
American Physical Society |
en_US |
| dc.relation.isversionof |
10.1103/PhysRevD.83.074023 |
en_US |
| dc.relation.hasversion |
http://arxiv.org/abs/1012.2077 |
en_US |
| dash.license |
OAP |
|
| dc.subject |
high energy physics |
en_US |
| dc.subject |
phenomenology |
en_US |
| dc.title |
W-Jet Tagging: Optimizing the Identification of Boosted Hadronically-Decaying W Bosons |
en_US |
| dc.type |
Journal Article |
en_US |
| dc.description.version |
Accepted Manuscript |
en_US |
| dc.relation.journal |
Physical Review D |
en_US |
| dash.depositing.author |
Schwartz, Matthew D
|
|
| dc.date.available |
2012-01-30T19:19:25Z |
|
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FAS Scholarly Articles [5133]
Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
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