An embedding technique to determine ττ backgrounds in proton-proton collision data

CMS Collaboration

doi:10.1088/1748-0221/14/06/P06032

An embedding technique to determine ττ backgrounds in proton-proton collision data

CMS Collaboration

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

An embedding technique is presented to estimate standard model it backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed nn events and replaced with simulated tau leptons with the same kinematic properties. In this way, a set of hybrid events is obtained that does not rely on simulation except for the decay of the tau leptons. The challenges in describing the underlying event or the production of associated jets in the simulation are avoided. The technique described in this paper was developed for CMS. Its validation and the inherent uncertainties are also discussed. The demonstration of the performance of the technique is based on a sample of proton-proton collisions collected by CMS in 2017 at √s = 13 TeV corresponding to an integrated luminosity o 41.5 fb^-1.

Original language	English
Article number	P06032
Journal	Journal of Instrumentation
Volume	14
Issue number	6
DOIs	https://doi.org/10.1088/1748-0221/14/06/P06032
Publication status	Published - 2019 Jun 21

Bibliographical note

Publisher Copyright:
© 2019 CERN for the benefit of the CMS collaboration. Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.

Keywords

Pattern recognition, cluster finding, calibration and fitting methods
Performance of high energy physics detectors

ASJC Scopus subject areas

Instrumentation
Mathematical Physics

Access to Document

10.1088/1748-0221/14/06/P06032

Cite this

@article{bb28d3dedca34112841b2d7dcbe83933,

title = "An embedding technique to determine ττ backgrounds in proton-proton collision data",

abstract = "An embedding technique is presented to estimate standard model it backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed nn events and replaced with simulated tau leptons with the same kinematic properties. In this way, a set of hybrid events is obtained that does not rely on simulation except for the decay of the tau leptons. The challenges in describing the underlying event or the production of associated jets in the simulation are avoided. The technique described in this paper was developed for CMS. Its validation and the inherent uncertainties are also discussed. The demonstration of the performance of the technique is based on a sample of proton-proton collisions collected by CMS in 2017 at √s = 13 TeV corresponding to an integrated luminosity o 41.5 fb-1.",

keywords = "Pattern recognition, cluster finding, calibration and fitting methods, Performance of high energy physics detectors",

author = "{CMS Collaboration} and Sirunyan, {A. M.} and A. Tumasyan and W. Adam and F. Ambrogi and E. Asilar and T. Bergauer and J. Brandstetter and M. Dragicevic and J. Er{\"o} and {Escalante Del Valle}, A. and M. Flechl and R. Fr{\"u}hwirth and Ghete, {V. M.} and J. Hrubec and M. Jeitler and N. Krammer and I. Kr{\"a}tschmer and D. Liko and T. Madlener and I. Mikulec and N. Rad and H. Rohringer and J. Schieck and R. Sch{\"o}fbeck and M. Spanring and D. Spitzbart and W. Waltenberger and J. Wittmann and Wulz, {C. E.} and M. Zarucki and V. Chekhovsky and V. Mossolov and {Suarez Gonzalez}, J. and {De Wolf}, {E. A.} and {Di Croce}, D. and X. Janssen and J. Lauwers and A. Lelek and M. Pieters and {Van Haevermaet}, H. and {Van Mechelen}, P. and {Van Remortel}, N. and F. Blekman and J. D'Hondt and {De Clercq}, J. and K. Deroover and S. Choi and B. Hong and Park, {S. K.} and J. Yoo",

note = "Publisher Copyright: {\textcopyright} 2019 CERN for the benefit of the CMS collaboration. Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.",

year = "2019",

month = jun,

day = "21",

doi = "10.1088/1748-0221/14/06/P06032",

language = "English",

volume = "14",

journal = "Journal of Instrumentation",

issn = "1748-0221",

publisher = "IOP Publishing Ltd.",

number = "6",

}

TY - JOUR

T1 - An embedding technique to determine ττ backgrounds in proton-proton collision data

AU - CMS Collaboration

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Ambrogi, F.

AU - Asilar, E.

AU - Bergauer, T.

AU - Brandstetter, J.

AU - Dragicevic, M.

AU - Erö, J.

AU - Escalante Del Valle, A.

AU - Flechl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Hrubec, J.

AU - Jeitler, M.

AU - Krammer, N.

AU - Krätschmer, I.

AU - Liko, D.

AU - Madlener, T.

AU - Mikulec, I.

AU - Rad, N.

AU - Rohringer, H.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Spanring, M.

AU - Spitzbart, D.

AU - Waltenberger, W.

AU - Wittmann, J.

AU - Wulz, C. E.

AU - Zarucki, M.

AU - Chekhovsky, V.

AU - Mossolov, V.

AU - Suarez Gonzalez, J.

AU - De Wolf, E. A.

AU - Di Croce, D.

AU - Janssen, X.

AU - Lauwers, J.

AU - Lelek, A.

AU - Pieters, M.

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Van Remortel, N.

AU - Blekman, F.

AU - D'Hondt, J.

AU - De Clercq, J.

AU - Deroover, K.

AU - Choi, S.

AU - Hong, B.

AU - Park, S. K.

AU - Yoo, J.

N1 - Publisher Copyright: © 2019 CERN for the benefit of the CMS collaboration. Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence.

PY - 2019/6/21

Y1 - 2019/6/21

N2 - An embedding technique is presented to estimate standard model it backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed nn events and replaced with simulated tau leptons with the same kinematic properties. In this way, a set of hybrid events is obtained that does not rely on simulation except for the decay of the tau leptons. The challenges in describing the underlying event or the production of associated jets in the simulation are avoided. The technique described in this paper was developed for CMS. Its validation and the inherent uncertainties are also discussed. The demonstration of the performance of the technique is based on a sample of proton-proton collisions collected by CMS in 2017 at √s = 13 TeV corresponding to an integrated luminosity o 41.5 fb-1.

AB - An embedding technique is presented to estimate standard model it backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed nn events and replaced with simulated tau leptons with the same kinematic properties. In this way, a set of hybrid events is obtained that does not rely on simulation except for the decay of the tau leptons. The challenges in describing the underlying event or the production of associated jets in the simulation are avoided. The technique described in this paper was developed for CMS. Its validation and the inherent uncertainties are also discussed. The demonstration of the performance of the technique is based on a sample of proton-proton collisions collected by CMS in 2017 at √s = 13 TeV corresponding to an integrated luminosity o 41.5 fb-1.

KW - Pattern recognition, cluster finding, calibration and fitting methods

KW - Performance of high energy physics detectors

UR - http://www.scopus.com/inward/record.url?scp=85069663308&partnerID=8YFLogxK

U2 - 10.1088/1748-0221/14/06/P06032

DO - 10.1088/1748-0221/14/06/P06032

M3 - Article

AN - SCOPUS:85069663308

SN - 1748-0221

VL - 14

JO - Journal of Instrumentation

JF - Journal of Instrumentation

IS - 6

M1 - P06032

ER -

An embedding technique to determine ττ backgrounds in proton-proton collision data

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this