Search for Nearly Mass-Degenerate Higgsinos Using Low-Momentum Mildly Displaced Tracks in pp Collisions at Formula Presented with the ATLAS Detector

ATLAS Collaboration

doi:10.1103/PhysRevLett.132.221801

Search for Nearly Mass-Degenerate Higgsinos Using Low-Momentum Mildly Displaced Tracks in pp Collisions at Formula Presented with the ATLAS Detector

ATLAS Collaboration

School of Physics and Astronomy

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

8 Scopus citations

Abstract

Higgsinos with masses near the electroweak scale can solve the hierarchy problem and provide a dark matter candidate, while detecting them at the LHC remains challenging if their mass splitting is Formula Presented. This Letter presents a novel search for nearly mass-degenerate Higgsinos in events with an energetic jet, missing transverse momentum, and a low-momentum track with a significant transverse impact parameter using Formula Presented of proton-proton collision data at Formula Presented collected by the ATLAS experiment. For the first time since LEP, a range of mass splittings between the lightest charged and neutral Higgsinos from 0.3 to 0.9 GeV is excluded at 95% confidence level, with a maximum reach of approximately 170 GeV in the Higgsino mass.

Original language	English
Article number	221801
Journal	Physical Review Letters
Volume	132
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.132.221801
State	Published - 31 May 2024

Funding

Funders	Funder number
BSF-NSF
Australian Research Council
La Caixa Banking Foundation
BMWFW
Centre National pour la Recherche Scientifique et Technique
Fundação para a Ciência e a Tecnologia
Cooperative Research Centres, Australian Government Department of Industry
National Stroke Foundation
CEA-DRF
Science and Technology Facilities Council
Horizon 2020, ICSC-NextGenerationEU
H2020 Marie Skłodowska-Curie Actions
INFN-CNAF
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Ministry of Science and Technology, Taiwan
Israel Science Foundation
Wallenberg Foundation
Leverhulme Trust
Baden-Württemberg Stiftung
PROMETEO
Neubauer Family Foundation
Staatssekretariat für Bildung, Forschung und Innovation
The Slovenian Research and Innovation Agency
Generalitat de Catalunya
Instituto Nazionale di Fisica Nucleare
Austrian Science Fund
Agencia Nacional de Investigación y Desarrollo
Bundesministerium für Bildung und Forschung
Helmholtz-Gemeinschaft
Danmarks Grundforskningsfond
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Karlsruhe Institute of Technology
Canarie
GridKA
Göran Gustafssons Stiftelser
MIZŠ
European Commission
Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja
U.S. Department of Energy
European Cooperation in Science and Technology
EU-ESF
International Council of Shopping Centers
RGC
Fundação de Amparo à Pesquisa do Estado de São Paulo
Institutul de Fizică Atomică
Natural Sciences and Engineering Research Council of Canada
Nella and Leon Benoziyo Center for Neurological Diseases, Weizmann Institute of Science
GenT Programmes Generalitat Valenciana, Spain
Irish Rugby Football Union
Cantons of Bern and Geneva
Chinese Academy of Sciences
Defence Science Institute
MNE
Agencia Nacional de Promoción Científica y Tecnológica
Royal Society
Minerva Foundation
National Research Foundation
Generalitat Valenciana
CERN
Ministerstvo Školství, Mládeže a Tělovýchovy
National Research Council Canada
Brookhaven National Laboratory
Alexander von Humboldt-Stiftung
Multiple Sclerosis Scientific Research Foundation
Caring Futures Institute, Flinders University
British Columbia Knowledge Development Fund
Ministry of Education, Culture, Sports, Science and Technology
MUCCA	CHIST-ERA-19-XAI-00
Agence Nationale de la Recherche	ANR-20-CE31-0013, ANR-21-CE31-0022
Narodowe Centrum Nauki	UMO-2022/47/O/ST2/00148, UMO-2020/37/B/ST2/01043, UMO-2019/34/E/ST2/00393, UMO-2021/40/C/ST2/00187, 2021/42/E/ST2/00350, 2022/47/B/ST2/03059
Center for Advancing Research Impact in Society	J1-3010
Fondo Nacional de Desarrollo Científico y Tecnológico	1230987, 1190886, 1210400
DRAC	21/SCI/017
Narodowa Agencja Wymiany Akademickiej	PPN/PPO/2020/1/00002/U/00001
Investissements d’Avenir Labex	ANR-11-LABX-0012
National Natural Science Foundation of China	NSFC—12175119, NSFC 12275265
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung	RPG-2020-004, 194658, SNSF—PCEFP2_194658
Japan Society for the Promotion of Science	22KK0227, 22H01227, JP21H05085, JP22H04944
European Regional Development Fund	IDIFEDER/2018/048
European Research Council	101089007
Vetenskapsrådet	VR 2022-03845
Horizon 2020 Framework Programme	948254
Norges Forskningsråd	RCN-314472
Ministerio de Ciencia e Innovación	RYC2020-030254-I, RYC2019-028510-I
Deutsche Forschungsgemeinschaft	DFG—469666862, DFG—CR 312/5-2
Knut och Alice Wallenbergs Stiftelse	KAW 2022.0358, KAW 2018.0157, KAW 2017.0100, KAW 2019.0447
UNCE	SCI/013
DNSRC	IN2P3-CNRS
North Dakota Game and Fish Department	CC-IN2P3
GenT Programmes Generalitat Valenciana	CIDEGENT/2019/023, CIDEGENT/2019/027
Fundación BBVA	LEO22-1-603
Norwegian Financial Mechanism	2014-2021

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10.1103/PhysRevLett.132.221801

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title = "Search for Nearly Mass-Degenerate Higgsinos Using Low-Momentum Mildly Displaced Tracks in pp Collisions at Formula Presented with the ATLAS Detector",

abstract = "Higgsinos with masses near the electroweak scale can solve the hierarchy problem and provide a dark matter candidate, while detecting them at the LHC remains challenging if their mass splitting is Formula Presented. This Letter presents a novel search for nearly mass-degenerate Higgsinos in events with an energetic jet, missing transverse momentum, and a low-momentum track with a significant transverse impact parameter using Formula Presented of proton-proton collision data at Formula Presented collected by the ATLAS experiment. For the first time since LEP, a range of mass splittings between the lightest charged and neutral Higgsinos from 0.3 to 0.9 GeV is excluded at 95% confidence level, with a maximum reach of approximately 170 GeV in the Higgsino mass.",

author = "{ATLAS Collaboration} and Filmer, {E. K.} and Grant, {C. M.} and P. Jackson and Kong, {A. X.Y.} and Pandya, {H. D.} and H. Potti and Ruggeri, {T. A.} and S. Saha and Ting, {E. X.L.} and White, {M. J.} and Gingrich, {D. M.} and Lindon, {J. H.} and N. Nishu and Pinfold, {J. L.} and O. Cakir and Canbay, {A. C.} and Yildiz, {H. Duran} and S. Kuday and {Turk Cakir}, I. and S. Sultansoy and {Adam Bourdarios}, C. and O. Arnaez and N. Berger and N. Brahimi and Castillo, {F. L.} and T. Cavaliere and F. Costanza and M. Delmastro and {Di Ciaccio}, L. and T. Hryn{\textquoteright}ova and I. Koletsou and C. Appelt and Lutz, {M. S.} and O. Kuprash and Biswal, {J. P.} and H. Abramowicz and L. Barak and U. Barron and G. Bella and Y. Benhammou and E. Etzion and Frid, {Y. Y.} and R. Nayak and G. Ninio and {Pascual Dominguez}, L. and D. Reikher and {Salvador Salas}, A. and A. Soffer and Tamir, {N. M.} and D. Vannicola",

note = "Publisher Copyright: {\textcopyright} 2024 CERN, for the ATLAS Collaboration.",

year = "2024",

month = may,

day = "31",

doi = "10.1103/PhysRevLett.132.221801",

language = "אנגלית",

volume = "132",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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T1 - Search for Nearly Mass-Degenerate Higgsinos Using Low-Momentum Mildly Displaced Tracks in pp Collisions at Formula Presented with the ATLAS Detector

AU - ATLAS Collaboration

AU - Filmer, E. K.

AU - Grant, C. M.

AU - Jackson, P.

AU - Kong, A. X.Y.

AU - Pandya, H. D.

AU - Potti, H.

AU - Ruggeri, T. A.

AU - Saha, S.

AU - Ting, E. X.L.

AU - White, M. J.

AU - Gingrich, D. M.

AU - Lindon, J. H.

AU - Nishu, N.

AU - Pinfold, J. L.

AU - Cakir, O.

AU - Canbay, A. C.

AU - Yildiz, H. Duran

AU - Kuday, S.

AU - Turk Cakir, I.

AU - Sultansoy, S.

AU - Adam Bourdarios, C.

AU - Arnaez, O.

AU - Berger, N.

AU - Brahimi, N.

AU - Castillo, F. L.

AU - Cavaliere, T.

AU - Costanza, F.

AU - Delmastro, M.

AU - Di Ciaccio, L.

AU - Hryn’ova, T.

AU - Koletsou, I.

AU - Appelt, C.

AU - Lutz, M. S.

AU - Kuprash, O.

AU - Biswal, J. P.

AU - Abramowicz, H.

AU - Barak, L.

AU - Barron, U.

AU - Bella, G.

AU - Benhammou, Y.

AU - Etzion, E.

AU - Frid, Y. Y.

AU - Nayak, R.

AU - Ninio, G.

AU - Pascual Dominguez, L.

AU - Reikher, D.

AU - Salvador Salas, A.

AU - Soffer, A.

AU - Tamir, N. M.

AU - Vannicola, D.

PY - 2024/5/31

Y1 - 2024/5/31

N2 - Higgsinos with masses near the electroweak scale can solve the hierarchy problem and provide a dark matter candidate, while detecting them at the LHC remains challenging if their mass splitting is Formula Presented. This Letter presents a novel search for nearly mass-degenerate Higgsinos in events with an energetic jet, missing transverse momentum, and a low-momentum track with a significant transverse impact parameter using Formula Presented of proton-proton collision data at Formula Presented collected by the ATLAS experiment. For the first time since LEP, a range of mass splittings between the lightest charged and neutral Higgsinos from 0.3 to 0.9 GeV is excluded at 95% confidence level, with a maximum reach of approximately 170 GeV in the Higgsino mass.

AB - Higgsinos with masses near the electroweak scale can solve the hierarchy problem and provide a dark matter candidate, while detecting them at the LHC remains challenging if their mass splitting is Formula Presented. This Letter presents a novel search for nearly mass-degenerate Higgsinos in events with an energetic jet, missing transverse momentum, and a low-momentum track with a significant transverse impact parameter using Formula Presented of proton-proton collision data at Formula Presented collected by the ATLAS experiment. For the first time since LEP, a range of mass splittings between the lightest charged and neutral Higgsinos from 0.3 to 0.9 GeV is excluded at 95% confidence level, with a maximum reach of approximately 170 GeV in the Higgsino mass.

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AN - SCOPUS:85196807349

SN - 0031-9007

VL - 132

JO - Physical Review Letters

JF - Physical Review Letters

IS - 22

M1 - 221801

ER -

Search for Nearly Mass-Degenerate Higgsinos Using Low-Momentum Mildly Displaced Tracks in pp Collisions at Formula Presented with the ATLAS Detector

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