Search for massive long-lived particles decaying semileptonically in the LHCb detector

LHCb Collaboration; R Aaij; Marco Adinolfi; John Benton; Emma Buchanan; Andrew Cook; Daniel Saunders; Sam Harnew; James Kariuki; Paras Naik; Konstantinos Petridis; Gabriela Pomery; Eugenia Price; Claire Prouve; Renato Quagliani; Jonas Rademacker; Sophie Richards; Daniel Saunders; Nicola Skidmore; Jaap Velthuis

doi:10.1140/epjc/s10052-017-4744-6

Search for massive long-lived particles decaying semileptonically in the LHCb detector

LHCb Collaboration, R Aaij, Marco Adinolfi, John Benton, Emma Buchanan, Andrew Cook, Daniel Saunders, Sam Harnew, James Kariuki, Paras Naik, Konstantinos Petridis, Gabriela Pomery, Eugenia Price, Claire Prouve, Renato Quagliani, Jonas Rademacker, Sophie Richards, Daniel Saunders, Nicola Skidmore, Jaap Velthuis

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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Abstract

A search is presented for massive long-lived particles
decaying into a muon and two quarks. The dataset
consists of proton-proton interactions at centre-of-mass energies
of 7 and 8 TeV, corresponding to integrated luminosities
of 1 and 2 fb−1, respectively. The analysis is performed
assuming a set of production mechanisms with simple topologies,
including the production of a Higgs-like particle decaying
into two long-lived particles. The mass range from 20
to 80 GeV/c2 and lifetimes from 5 to 100 ps are explored.
Results are also interpreted in terms of neutralino production
in different R-Parity violating supersymmetric models,
with masses in the 23–198 GeV/c2 range. No excess above
the background expectation is observed and upper limits are
set on the production cross-section for various points in the
parameter space of theoretical models.

Original language	English
Journal	European Physical Journal C: Particles and Fields
Volume	77
Issue number	224
DOIs	https://doi.org/10.1140/epjc/s10052-017-4744-6
Publication status	Published - 10 Apr 2017

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Bristol Consolidated Grant 2015-9
Goldstein, J.
1/10/15 → 31/03/21
Project: Research

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LHCb Collaboration, Aaij, R., Adinolfi, M., Benton, J., Buchanan, E., Cook, A., Saunders, D., Harnew, S., Kariuki, J., Naik, P., Petridis, K., Pomery, G., Price, E., Prouve, C., Quagliani, R., Rademacker, J., Richards, S., Saunders, D., Skidmore, N., & Velthuis, J. (2017). Search for massive long-lived particles decaying semileptonically in the LHCb detector. European Physical Journal C: Particles and Fields, 77(224). https://doi.org/10.1140/epjc/s10052-017-4744-6

LHCb Collaboration ; Aaij, R ; Adinolfi, Marco ; Benton, John ; Buchanan, Emma ; Cook, Andrew ; Saunders, Daniel ; Harnew, Sam ; Kariuki, James ; Naik, Paras ; Petridis, Konstantinos ; Pomery, Gabriela ; Price, Eugenia ; Prouve, Claire ; Quagliani, Renato ; Rademacker, Jonas ; Richards, Sophie ; Saunders, Daniel ; Skidmore, Nicola ; Velthuis, Jaap. / Search for massive long-lived particles decaying semileptonically in the LHCb detector. In: European Physical Journal C: Particles and Fields. 2017 ; Vol. 77, No. 224.

@article{1cfe66a95118412fb36a340f8aa5f5d8,

title = "Search for massive long-lived particles decaying semileptonically in the LHCb detector",

abstract = "A search is presented for massive long-lived particlesdecaying into a muon and two quarks. The datasetconsists of proton-proton interactions at centre-of-mass energiesof 7 and 8 TeV, corresponding to integrated luminositiesof 1 and 2 fb−1, respectively. The analysis is performedassuming a set of production mechanisms with simple topologies,including the production of a Higgs-like particle decayinginto two long-lived particles. The mass range from 20to 80 GeV/c2 and lifetimes from 5 to 100 ps are explored.Results are also interpreted in terms of neutralino productionin different R-Parity violating supersymmetric models,with masses in the 23–198 GeV/c2 range. No excess abovethe background expectation is observed and upper limits areset on the production cross-section for various points in theparameter space of theoretical models.",

author = "{LHCb Collaboration} and R Aaij and Marco Adinolfi and John Benton and Emma Buchanan and Andrew Cook and Daniel Saunders and Sam Harnew and James Kariuki and Paras Naik and Konstantinos Petridis and Gabriela Pomery and Eugenia Price and Claire Prouve and Renato Quagliani and Jonas Rademacker and Sophie Richards and Daniel Saunders and Nicola Skidmore and Jaap Velthuis",

year = "2017",

month = apr,

day = "10",

doi = "10.1140/epjc/s10052-017-4744-6",

language = "English",

volume = "77",

journal = "European Physical Journal C: Particles and Fields",

issn = "1434-6044",

publisher = "Springer Berlin Heidelberg",

number = "224",

}

LHCb Collaboration, Aaij, R, Adinolfi, M, Benton, J, Buchanan, E, Cook, A, Saunders, D, Harnew, S, Kariuki, J, Naik, P , Petridis, K, Pomery, G, Price, E, Prouve, C, Quagliani, R, Rademacker, J, Richards, S, Saunders, D, Skidmore, N & Velthuis, J 2017, 'Search for massive long-lived particles decaying semileptonically in the LHCb detector', European Physical Journal C: Particles and Fields, vol. 77, no. 224. https://doi.org/10.1140/epjc/s10052-017-4744-6

Search for massive long-lived particles decaying semileptonically in the LHCb detector. / LHCb Collaboration; Aaij, R; Adinolfi, Marco; Benton, John; Buchanan, Emma; Cook, Andrew; Saunders, Daniel; Harnew, Sam; Kariuki, James; Naik, Paras ; Petridis, Konstantinos; Pomery, Gabriela; Price, Eugenia; Prouve, Claire; Quagliani, Renato; Rademacker, Jonas; Richards, Sophie; Saunders, Daniel; Skidmore, Nicola; Velthuis, Jaap.

In: European Physical Journal C: Particles and Fields, Vol. 77, No. 224, 10.04.2017.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

TY - JOUR

T1 - Search for massive long-lived particles decaying semileptonically in the LHCb detector

AU - LHCb Collaboration

AU - Aaij, R

AU - Adinolfi, Marco

AU - Benton, John

AU - Buchanan, Emma

AU - Cook, Andrew

AU - Saunders, Daniel

AU - Harnew, Sam

AU - Kariuki, James

AU - Naik, Paras

AU - Petridis, Konstantinos

AU - Pomery, Gabriela

AU - Price, Eugenia

AU - Prouve, Claire

AU - Quagliani, Renato

AU - Rademacker, Jonas

AU - Richards, Sophie

AU - Saunders, Daniel

AU - Skidmore, Nicola

AU - Velthuis, Jaap

PY - 2017/4/10

Y1 - 2017/4/10

N2 - A search is presented for massive long-lived particlesdecaying into a muon and two quarks. The datasetconsists of proton-proton interactions at centre-of-mass energiesof 7 and 8 TeV, corresponding to integrated luminositiesof 1 and 2 fb−1, respectively. The analysis is performedassuming a set of production mechanisms with simple topologies,including the production of a Higgs-like particle decayinginto two long-lived particles. The mass range from 20to 80 GeV/c2 and lifetimes from 5 to 100 ps are explored.Results are also interpreted in terms of neutralino productionin different R-Parity violating supersymmetric models,with masses in the 23–198 GeV/c2 range. No excess abovethe background expectation is observed and upper limits areset on the production cross-section for various points in theparameter space of theoretical models.

AB - A search is presented for massive long-lived particlesdecaying into a muon and two quarks. The datasetconsists of proton-proton interactions at centre-of-mass energiesof 7 and 8 TeV, corresponding to integrated luminositiesof 1 and 2 fb−1, respectively. The analysis is performedassuming a set of production mechanisms with simple topologies,including the production of a Higgs-like particle decayinginto two long-lived particles. The mass range from 20to 80 GeV/c2 and lifetimes from 5 to 100 ps are explored.Results are also interpreted in terms of neutralino productionin different R-Parity violating supersymmetric models,with masses in the 23–198 GeV/c2 range. No excess abovethe background expectation is observed and upper limits areset on the production cross-section for various points in theparameter space of theoretical models.

U2 - 10.1140/epjc/s10052-017-4744-6

DO - 10.1140/epjc/s10052-017-4744-6

M3 - Article (Academic Journal)

C2 - 28515664

VL - 77

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

SN - 1434-6044

IS - 224

ER -

Search for massive long-lived particles decaying semileptonically in the LHCb detector

Abstract

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Bristol Consolidated Grant 2015-9

Cite this