Search for Light Long-Lived Particles in 𝑝⁢𝑝 Collisions at √𝑠=13  TeV Using Displaced Vertices in the ATLAS Inner Detector

ATLAS Collaboration; S. Alderweireldt; J.F. Allen; T.M. Carter; P. J.  Clark; J.R. Curran; D. Duda; S. M. Farrington; Y. Gao; J.M. Gargan; R.Y. Gonzalez Andana; C. Jiang; C. Leonidopoulos; M. Firdaus M. Soberi; V. J.  Martin; L. Mijović; V.A. Parrish; E.A. Pender; T. Qiu; J.M. Silva; N. Themistokleous; E.M. Villhauer; B.M. Wynne; Z. Xu; E. Zaid

doi:10.1103/PhysRevLett.133.161803

Search for Light Long-Lived Particles in 𝑝⁢𝑝 Collisions at √𝑠=13 TeV Using Displaced Vertices in the ATLAS Inner Detector

ATLAS Collaboration, S. Alderweireldt, J.F. Allen, T.M. Carter, P. J. Clark, J.R. Curran, D. Duda, S. M. Farrington, Y. Gao, J.M. Gargan, R.Y. Gonzalez Andana, C. Jiang, C. Leonidopoulos, M. Firdaus M. Soberi, V. J. Martin, L. Mijović, V.A. Parrish, E.A. Pender, T. Qiu, J.M. SilvaN. Themistokleous, E.M. Villhauer, B.M. Wynne, Z. Xu, E. Zaid

School of Physics and Astronomy

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

Abstract

A search for long-lived particles (LLPs) using 140 fb−1 of 𝑝⁢𝑝 collision data with √𝑠=13 TeV recorded by the ATLAS experiment at the LHC is presented. The search targets LLPs with masses between 5 and 55 GeV that decay hadronically in the ATLAS inner detector. Benchmark models with LLP pair production from exotic decays of the Higgs boson and models featuring long-lived axionlike particles (ALPs) are considered. No significant excess above the expected background is observed. Upper limits are placed on the branching ratio of the Higgs boson to pairs of LLPs, the cross section for ALPs produced in association with a vector boson, and, for the first time, on the branching ratio of the top quark to an ALP and a 𝑢/𝑐 quark.

Original language	English
Article number	161803
Pages (from-to)	1-24
Number of pages	24
Journal	Physical Review Letters
Volume	133
Issue number	16
Early online date	17 Oct 2024
DOIs	https://doi.org/10.1103/PhysRevLett.133.161803
Publication status	Published - 18 Oct 2024

Access to Document

10.1103/PhysRevLett.133.161803Licence: Creative Commons: Attribution (CC-BY)

3 Finished
3 Active

Upgrade of the ATLAS detector at the LHC (2023-26)
Clark, P. (Principal Investigator)
Science and Technology Facilities Council
1/04/23 → 31/03/27
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
Science and Technology Facilities Council
1/04/23 → 31/03/26
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
Science and Technology Facilities Council
1/10/22 → 31/03/26
Project: Research

Cite this

ATLAS Collaboration, Alderweireldt, S., Allen, J. F., Carter, T. M., Clark, P. J., Curran, J. R., Duda, D., Farrington, S. M., Gao, Y., Gargan, J. M., Gonzalez Andana, R. Y., Jiang, C., Leonidopoulos, C., Soberi, M. F. M., Martin, V. J., Mijović, L., Parrish, V. A., Pender, E. A., Qiu, T., ... Zaid, E. (2024). Search for Light Long-Lived Particles in 𝑝⁢𝑝 Collisions at √𝑠=13 TeV Using Displaced Vertices in the ATLAS Inner Detector. Physical Review Letters, 133(16), 1-24. Article 161803. https://doi.org/10.1103/PhysRevLett.133.161803

@article{8bb1054b817f43868f9cbfd8f2b1e42c,

title = "Search for Light Long-Lived Particles in 𝑝⁢𝑝 Collisions at √𝑠=13 TeV Using Displaced Vertices in the ATLAS Inner Detector",

abstract = "A search for long-lived particles (LLPs) using 140 fb−1 of 𝑝⁢𝑝 collision data with √𝑠=13 TeV recorded by the ATLAS experiment at the LHC is presented. The search targets LLPs with masses between 5 and 55 GeV that decay hadronically in the ATLAS inner detector. Benchmark models with LLP pair production from exotic decays of the Higgs boson and models featuring long-lived axionlike particles (ALPs) are considered. No significant excess above the expected background is observed. Upper limits are placed on the branching ratio of the Higgs boson to pairs of LLPs, the cross section for ALPs produced in association with a vector boson, and, for the first time, on the branching ratio of the top quark to an ALP and a 𝑢/𝑐 quark.",

author = "{ATLAS Collaboration} and S. Alderweireldt and J.F. Allen and T.M. Carter and Clark, {P. J.} and J.R. Curran and D. Duda and Farrington, {S. M.} and Y. Gao and J.M. Gargan and {Gonzalez Andana}, R.Y. and C. Jiang and C. Leonidopoulos and Soberi, {M. Firdaus M.} and Martin, {V. J.} and L. Mijovi{\'c} and V.A. Parrish and E.A. Pender and T. Qiu and J.M. Silva and N. Themistokleous and E.M. Villhauer and B.M. Wynne and Z. Xu and E. Zaid",

year = "2024",

month = oct,

day = "18",

doi = "10.1103/PhysRevLett.133.161803",

language = "English",

volume = "133",

pages = "1--24",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "16",

}

ATLAS Collaboration, Alderweireldt, S, Allen, JF, Carter, TM, Clark, PJ, Curran, JR, Duda, D , Farrington, SM , Gao, Y, Gargan, JM, Gonzalez Andana, RY, Jiang, C, Leonidopoulos, C, Soberi, MFM, Martin, VJ , Mijović, L, Parrish, VA, Pender, EA, Qiu, T , Silva, JM, Themistokleous, N, Villhauer, EM, Wynne, BM , Xu, Z & Zaid, E 2024, 'Search for Light Long-Lived Particles in 𝑝⁢𝑝 Collisions at √𝑠=13 TeV Using Displaced Vertices in the ATLAS Inner Detector', Physical Review Letters, vol. 133, no. 16, 161803, pp. 1-24. https://doi.org/10.1103/PhysRevLett.133.161803

TY - JOUR

T1 - Search for Light Long-Lived Particles in 𝑝⁢𝑝 Collisions at √𝑠=13 TeV Using Displaced Vertices in the ATLAS Inner Detector

AU - ATLAS Collaboration

AU - Alderweireldt, S.

AU - Allen, J.F.

AU - Carter, T.M.

AU - Clark, P. J.

AU - Curran, J.R.

AU - Duda, D.

AU - Farrington, S. M.

AU - Gao, Y.

AU - Gargan, J.M.

AU - Gonzalez Andana, R.Y.

AU - Jiang, C.

AU - Leonidopoulos, C.

AU - Soberi, M. Firdaus M.

AU - Martin, V. J.

AU - Mijović, L.

AU - Parrish, V.A.

AU - Pender, E.A.

AU - Qiu, T.

AU - Silva, J.M.

AU - Themistokleous, N.

AU - Villhauer, E.M.

AU - Wynne, B.M.

AU - Xu, Z.

AU - Zaid, E.

PY - 2024/10/18

Y1 - 2024/10/18

N2 - A search for long-lived particles (LLPs) using 140 fb−1 of 𝑝⁢𝑝 collision data with √𝑠=13 TeV recorded by the ATLAS experiment at the LHC is presented. The search targets LLPs with masses between 5 and 55 GeV that decay hadronically in the ATLAS inner detector. Benchmark models with LLP pair production from exotic decays of the Higgs boson and models featuring long-lived axionlike particles (ALPs) are considered. No significant excess above the expected background is observed. Upper limits are placed on the branching ratio of the Higgs boson to pairs of LLPs, the cross section for ALPs produced in association with a vector boson, and, for the first time, on the branching ratio of the top quark to an ALP and a 𝑢/𝑐 quark.

AB - A search for long-lived particles (LLPs) using 140 fb−1 of 𝑝⁢𝑝 collision data with √𝑠=13 TeV recorded by the ATLAS experiment at the LHC is presented. The search targets LLPs with masses between 5 and 55 GeV that decay hadronically in the ATLAS inner detector. Benchmark models with LLP pair production from exotic decays of the Higgs boson and models featuring long-lived axionlike particles (ALPs) are considered. No significant excess above the expected background is observed. Upper limits are placed on the branching ratio of the Higgs boson to pairs of LLPs, the cross section for ALPs produced in association with a vector boson, and, for the first time, on the branching ratio of the top quark to an ALP and a 𝑢/𝑐 quark.

U2 - 10.1103/PhysRevLett.133.161803

DO - 10.1103/PhysRevLett.133.161803

M3 - Article

SN - 0031-9007

VL - 133

SP - 1

EP - 24

JO - Physical Review Letters

JF - Physical Review Letters

IS - 16

M1 - 161803

ER -

Search for Light Long-Lived Particles in 𝑝⁢𝑝 Collisions at √𝑠=13 TeV Using Displaced Vertices in the ATLAS Inner Detector

Abstract

Access to Document

Fingerprint

Projects

Upgrade of the ATLAS detector at the LHC (2023-26)

Experimental Particle Physics at the University of Edinburgh

Experimental Particle Physics at the University of Edinburgh

Cite this