Search for heavy long-lived multi-charged particles in the full LHC Run 2 pp collision data at <math altimg="si1.svg"><msqrt><mrow><mi>s</mi></mrow></msqrt><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mn>13</mn></math> TeV using the ATLAS detector - INSPIRE

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Search for heavy long-lived multi-charged particles in the full LHC Run 2 pp collision data at $\sqrt{s} = 13$ TeV using the ATLAS detector

ATLAS

Collaboration

Mar 23, 2023

25 pages

Published in:

Phys.Lett.B 847 (2023) 138316

Published: Nov 10, 2023

e-Print:

2303.13613 [hep-ex]

DOI:

10.1016/j.physletb.2023.138316 (publication)

PDG: MASS LIMITS for Long-Lived Charged Heavy Fermions

Report number:

CERN-EP-2023-017

Experiments:

CERN-LHC-ATLAS

View in:

reference search26 citations

Citations per year

Abstract: (Elsevier B.V.)

A search for heavy long-lived multi-charged particles is performed using the ATLAS detector at the LHC. Data collected in 2015–2018 at

\sqrt{s} = 13

TeV from pp collisions corresponding to an integrated luminosity of 139 fb⁻¹ are examined. Particles producing anomalously high ionization, consistent with long-lived spin-½ massive particles with electric charges from

| q | = 2 e

to

| q | = 7 e

are searched for. No statistically significant evidence of such particles is observed, and 95% confidence level cross-section upper limits are calculated and interpreted as the lower mass limits for a Drell–Yan plus photon-fusion production mode. The least stringent limit, 1060 GeV, is obtained for

| q | = 2 e

particles, and the most stringent one, 1600 GeV, is for

| q | = 6 e

particles.

Note:

39 pages in total, author list starting page 22, 9 figures, 5 tables, published in PLB. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2018-54/

p p: scattering
p p: colliding beams
photon photon: fusion
channel cross section: upper limit
charge: electric
ionization: high
particle: massive
charged particle: long-lived
charged particle: mass
CERN LHC Coll

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