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

R. Aaij; B. Adeva; M. Adinolfi; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A. A. Alves; S. Amato; S. Amerio; Y. Amhis; L. An; L. Anderlini; G. Andreassi; M. Andreotti; J. E. Andrews; R. B. Appleby; F. Archilli; P. d’Argent; J. Arnau Romeu; A. Artamonov; M. Artuso; E. Aslanides; G. Auriemma; M. Baalouch; I. Babuschkin; S. Bachmann; J. J. Back; A. Badalov; C. Baesso; S. Baker; W. Baldini; R. J. Barlow; S. Bifani; G. Chatzikonstantinidis; N. Farley; P. Griffith; C. Lazzeroni; A. Mazurov; J. McCarthy; L. Pescatore; A. Sergi; N. K. Watson; M. P. Williams; T. Williams; K. A. Zarebski; LHCb Collaboration

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

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

R. Aaij, B. Adeva, M. Adinolfi, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, G. Andreassi, M. Andreotti, J. E. AndrewsR. B. Appleby, F. Archilli, P. d’Argent, J. Arnau Romeu, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, I. Babuschkin, S. Bachmann, J. J. Back, A. Badalov, C. Baesso, S. Baker, W. Baldini, R. J. Barlow, S. Bifani, G. Chatzikonstantinidis, N. Farley, P. Griffith, C. Lazzeroni, A. Mazurov, J. McCarthy, L. Pescatore, A. Sergi, N. K. Watson, M. P. Williams, T. Williams, K. A. Zarebski, LHCb Collaboration

Physics and Astronomy

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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 2fb-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 / c²and lifetimes from 5 to 100ps 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/c²range. 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
Article number	224
Journal	European Physical Journal C
Volume	77
Issue number	4
DOIs	https://doi.org/10.1140/epjc/s10052-017-4744-6
Publication status	Published - 10 Apr 2017

Keywords

minimal supersymmetric standard model
systematic uncertainty
detection efficiency
gluino mass
fast simulation

ASJC Scopus subject areas

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

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10.1140/epjc/s10052-017-4744-6Licence: Creative Commons: Attribution (CC BY)

Aaij_et_al_Search_for_massive_long-lived_particles_European_Physical_Journal_C_2017
Published in European Physical Journal C on 10/04/2017 DOI: 10.1140/epjc/s10052-017-4744-6
Final published version, 1.17 MBLicence: Creative Commons: Attribution (CC BY)

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Cite this

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Andreassi, G., Andreotti, M., ... LHCb Collaboration (2017). Search for massive long-lived particles decaying semileptonically in the LHCb detector. European Physical Journal C, 77(4), Article 224. https://doi.org/10.1140/epjc/s10052-017-4744-6

@article{ce773d32e3f54d9da7d0c4ae127d4da0,

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

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 2fb-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 / c2and lifetimes from 5 to 100ps 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/c2range. 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.",

keywords = "minimal supersymmetric standard model , systematic uncertainty , detection efficiency , gluino mass , fast simulation",

author = "R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and S. Ali and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and F. Archilli and P. d{\textquoteright}Argent and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and I. Babuschkin and S. Bachmann and Back, {J. J.} and A. Badalov and C. Baesso and S. Baker and W. Baldini and Barlow, {R. J.} and S. Bifani and G. Chatzikonstantinidis and N. Farley and P. Griffith and C. Lazzeroni and A. Mazurov and J. McCarthy and L. Pescatore and A. Sergi and Watson, {N. K.} and Williams, {M. P.} and T. Williams and Zarebski, {K. A.} and {LHCb Collaboration}",

year = "2017",

month = apr,

day = "10",

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

language = "English",

volume = "77",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer",

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Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Alvarez Cartelle, P, Alves, AA, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Archilli, F, d’Argent, P, Arnau Romeu, J, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Babuschkin, I, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baker, S, Baldini, W, Barlow, RJ, Bifani, S, Chatzikonstantinidis, G, Farley, N, Griffith, P, Lazzeroni, C, Mazurov, A, McCarthy, J, Pescatore, L, Sergi, A, Watson, NK, Williams, MP, Williams, T, Zarebski, KA & LHCb Collaboration 2017, 'Search for massive long-lived particles decaying semileptonically in the LHCb detector', European Physical Journal C, vol. 77, no. 4, 224. https://doi.org/10.1140/epjc/s10052-017-4744-6

TY - JOUR

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

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Ali, S.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Archilli, F.

AU - d’Argent, P.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Babuschkin, I.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Baesso, C.

AU - Baker, S.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Bifani, S.

AU - Chatzikonstantinidis, G.

AU - Farley, N.

AU - Griffith, P.

AU - Lazzeroni, C.

AU - Mazurov, A.

AU - McCarthy, J.

AU - Pescatore, L.

AU - Sergi, A.

AU - Watson, N. K.

AU - Williams, M. P.

AU - Williams, T.

AU - Zarebski, K. A.

AU - LHCb Collaboration

PY - 2017/4/10

Y1 - 2017/4/10

N2 - 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 2fb-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 / c2and lifetimes from 5 to 100ps 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/c2range. 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.

AB - 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 2fb-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 / c2and lifetimes from 5 to 100ps 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/c2range. 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.

KW - minimal supersymmetric standard model

KW - systematic uncertainty

KW - detection efficiency

KW - gluino mass

KW - fast simulation

UR - http://www.scopus.com/inward/record.url?scp=85017327230&partnerID=8YFLogxK

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

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

M3 - Article

AN - SCOPUS:85017327230

SN - 1434-6044

VL - 77

JO - European Physical Journal C

JF - European Physical Journal C

IS - 4

M1 - 224

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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