Reconstruction of the Higgs mass in events with Higgs bosons decaying into a pair of τ leptons using matrix element techniques

Lorenzo Bianchini; Betty Calpas; John Conway; Andrew Fowlie; Luca Marzola; Lucia Perrini; Christian Veelken

doi:10.1016/j.nima.2017.05.001

Reconstruction of the Higgs mass in events with Higgs bosons decaying into a pair of τ leptons using matrix element techniques

Lorenzo Bianchini, Betty Calpas, John Conway, Andrew Fowlie, Luca Marzola, Lucia Perrini, Christian Veelken^*

^*Corresponding author for this work

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

15 Citations (Scopus)

Abstract

We present an algorithm for the reconstruction of the Higgs mass in events with Higgs bosons decaying into a pair of τ leptons. The algorithm is based on matrix element (ME) techniques and achieves a relative resolution on the Higgs boson mass of typically 15–20%. A previous version of the algorithm has been used in analyses of Higgs boson production performed by the CMS collaboration during LHC Run 1. The algorithm is described in detail and its performance on simulated events is assessed. The development of techniques to handle τ decays in the ME formalism represents an important result of this paper.

Original language	English
Pages (from-to)	54-84
Number of pages	31
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	862
DOIs	https://doi.org/10.1016/j.nima.2017.05.001
Publication status	Published - 1 Aug 2017
Externally published	Yes

Keywords

Algorithm
Higgs boson
Mass reconstruction
Matrix element
Tau

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10.1016/j.nima.2017.05.001

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Bianchini, L., Calpas, B., Conway, J., Fowlie, A., Marzola, L., Perrini, L., & Veelken, C. (2017). Reconstruction of the Higgs mass in events with Higgs bosons decaying into a pair of τ leptons using matrix element techniques. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 862, 54-84. https://doi.org/10.1016/j.nima.2017.05.001

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abstract = "We present an algorithm for the reconstruction of the Higgs mass in events with Higgs bosons decaying into a pair of τ leptons. The algorithm is based on matrix element (ME) techniques and achieves a relative resolution on the Higgs boson mass of typically 15–20%. A previous version of the algorithm has been used in analyses of Higgs boson production performed by the CMS collaboration during LHC Run 1. The algorithm is described in detail and its performance on simulated events is assessed. The development of techniques to handle τ decays in the ME formalism represents an important result of this paper.",

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author = "Lorenzo Bianchini and Betty Calpas and John Conway and Andrew Fowlie and Luca Marzola and Lucia Perrini and Christian Veelken",

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doi = "10.1016/j.nima.2017.05.001",

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Bianchini, L, Calpas, B, Conway, J, Fowlie, A, Marzola, L, Perrini, L & Veelken, C 2017, 'Reconstruction of the Higgs mass in events with Higgs bosons decaying into a pair of τ leptons using matrix element techniques', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 862, pp. 54-84. https://doi.org/10.1016/j.nima.2017.05.001

Reconstruction of the Higgs mass in events with Higgs bosons decaying into a pair of τ leptons using matrix element techniques. / Bianchini, Lorenzo; Calpas, Betty; Conway, John et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 862, 01.08.2017, p. 54-84.

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

TY - JOUR

T1 - Reconstruction of the Higgs mass in events with Higgs bosons decaying into a pair of τ leptons using matrix element techniques

AU - Bianchini, Lorenzo

AU - Calpas, Betty

AU - Conway, John

AU - Fowlie, Andrew

AU - Marzola, Luca

AU - Perrini, Lucia

AU - Veelken, Christian

PY - 2017/8/1

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N2 - We present an algorithm for the reconstruction of the Higgs mass in events with Higgs bosons decaying into a pair of τ leptons. The algorithm is based on matrix element (ME) techniques and achieves a relative resolution on the Higgs boson mass of typically 15–20%. A previous version of the algorithm has been used in analyses of Higgs boson production performed by the CMS collaboration during LHC Run 1. The algorithm is described in detail and its performance on simulated events is assessed. The development of techniques to handle τ decays in the ME formalism represents an important result of this paper.

AB - We present an algorithm for the reconstruction of the Higgs mass in events with Higgs bosons decaying into a pair of τ leptons. The algorithm is based on matrix element (ME) techniques and achieves a relative resolution on the Higgs boson mass of typically 15–20%. A previous version of the algorithm has been used in analyses of Higgs boson production performed by the CMS collaboration during LHC Run 1. The algorithm is described in detail and its performance on simulated events is assessed. The development of techniques to handle τ decays in the ME formalism represents an important result of this paper.

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KW - Higgs boson

KW - Mass reconstruction

KW - Matrix element

KW - Tau

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VL - 862

SP - 54

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JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

ER -

Bianchini L, Calpas B, Conway J, Fowlie A, Marzola L, Perrini L et al. Reconstruction of the Higgs mass in events with Higgs bosons decaying into a pair of τ leptons using matrix element techniques. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2017 Aug 1;862:54-84. doi: 10.1016/j.nima.2017.05.001

Reconstruction of the Higgs mass in events with Higgs bosons decaying into a pair of τ leptons using matrix element techniques

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