vs. as a probe of a scalar mediator dark-matter scenario

vs. as a probe of a scalar mediator dark-matter scenario

Recently, Belle II reported the observation of the decay , where M X is the missing mass, with the branching ratio much exceeding which is the only Standard Model (SM) process contributing to this reaction. If confirmed, this might be an indication of new non-SM particles produced in this decay. One...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Europhysics letters 2024-01, Vol.145 (1), p.14001
Hauptverfasser: Berezhnoy, Alexander, Melikhov, Dmitri
Format: Artikel
Sprache:eng
Schlagworte:
Particle decay
Standard model (particle physics)
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue 1
container_start_page 14001
container_title Europhysics letters
container_volume 145
creator Berezhnoy, Alexander
Melikhov, Dmitri
description Recently, Belle II reported the observation of the decay , where M X is the missing mass, with the branching ratio much exceeding which is the only Standard Model (SM) process contributing to this reaction. If confirmed, this might be an indication of new non-SM particles produced in this decay. One of the possible explanations of the observed effect could be light dark-matter (DM) particles produced via a scalar mediator field. We give simple arguments, that a combined analysis of the and reactions would be a clean probe of the scalar mediator scenario: i) making use of an observed value and ii) assuming that the effect is due to the light dark-matter coupling to the top quark via a scalar mediator field, one finds an upper limit . Within the discussed scenario, this upper limit does not depend on the mass of the scalar mediator nor on the specific details of the unobserved dark-matter particles in the final state.
doi_str_mv 10.1209/0295-5075/ad1d03
format Article
fullrecord <record><control><sourceid>proquest_iop_j</sourceid><recordid>TN_cdi_iop_journals_10_1209_0295_5075_ad1d03</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>3110115656</sourcerecordid><originalsourceid>FETCH-LOGICAL-c255t-2059f51f6c8742ead132dd994acc01223667b6b50227844342eafa691a73f9133</originalsourceid><addsrcrecordid>eNp9kEtLxDAQgIMouK7ePRY8eLG7mbzaHGXxBQte9BymTQJddzc16Qr-e1MqehEvmcB88_oIuQS6AEb1kjItS0kruUQLlvIjMgNWq1LUUhyT2U_6lJyltKEUoAY1I_VHWhSYCiz6GBpXBJ-_qcUtxmLnbIdDiIXF-FbucBhczDm3x9iFc3LicZvcxXeck9f7u5fVY7l-fnha3a7Llkk5lIxK7SV41daVYC7vxpm1WgtsWwqMcaWqRjWSMlbVQvCR8ag0YMW9Bs7n5Grqm_d7P7g0mE04xH0eaThAPkMqqTJFJ6qNIaXovOljt8P4aYCa0Y8ZBZhRgJn85JKbqaQL_W_Pf_DrP3DXbw0IaSC_2anpredfwexwhQ</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>3110115656</pqid></control><display><type>article</type><title>vs. as a probe of a scalar mediator dark-matter scenario</title><source>Institute of Physics Journals</source><creator>Berezhnoy, Alexander ; Melikhov, Dmitri</creator><creatorcontrib>Berezhnoy, Alexander ; Melikhov, Dmitri</creatorcontrib><description>Recently, Belle II reported the observation of the decay , where M X is the missing mass, with the branching ratio much exceeding which is the only Standard Model (SM) process contributing to this reaction. If confirmed, this might be an indication of new non-SM particles produced in this decay. One of the possible explanations of the observed effect could be light dark-matter (DM) particles produced via a scalar mediator field. We give simple arguments, that a combined analysis of the and reactions would be a clean probe of the scalar mediator scenario: i) making use of an observed value and ii) assuming that the effect is due to the light dark-matter coupling to the top quark via a scalar mediator field, one finds an upper limit . Within the discussed scenario, this upper limit does not depend on the mass of the scalar mediator nor on the specific details of the unobserved dark-matter particles in the final state.</description><identifier>ISSN: 0295-5075</identifier><identifier>EISSN: 1286-4854</identifier><identifier>DOI: 10.1209/0295-5075/ad1d03</identifier><identifier>CODEN: EULEEJ</identifier><language>eng</language><publisher>Les Ulis: EDP Sciences, IOP Publishing and Società Italiana di Fisica</publisher><subject>Particle decay ; Standard model (particle physics)</subject><ispartof>Europhysics letters, 2024-01, Vol.145 (1), p.14001</ispartof><rights>Copyright © 2024 EPLA</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c255t-2059f51f6c8742ead132dd994acc01223667b6b50227844342eafa691a73f9133</citedby><cites>FETCH-LOGICAL-c255t-2059f51f6c8742ead132dd994acc01223667b6b50227844342eafa691a73f9133</cites><orcidid>0000-0003-4654-6933</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.1209/0295-5075/ad1d03/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>314,780,784,27924,27925,53846</link.rule.ids></links><search><creatorcontrib>Berezhnoy, Alexander</creatorcontrib><creatorcontrib>Melikhov, Dmitri</creatorcontrib><title>vs. as a probe of a scalar mediator dark-matter scenario</title><title>Europhysics letters</title><addtitle>EPL</addtitle><addtitle>EPL</addtitle><description>Recently, Belle II reported the observation of the decay , where M X is the missing mass, with the branching ratio much exceeding which is the only Standard Model (SM) process contributing to this reaction. If confirmed, this might be an indication of new non-SM particles produced in this decay. One of the possible explanations of the observed effect could be light dark-matter (DM) particles produced via a scalar mediator field. We give simple arguments, that a combined analysis of the and reactions would be a clean probe of the scalar mediator scenario: i) making use of an observed value and ii) assuming that the effect is due to the light dark-matter coupling to the top quark via a scalar mediator field, one finds an upper limit . Within the discussed scenario, this upper limit does not depend on the mass of the scalar mediator nor on the specific details of the unobserved dark-matter particles in the final state.</description><subject>Particle decay</subject><subject>Standard model (particle physics)</subject><issn>0295-5075</issn><issn>1286-4854</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLxDAQgIMouK7ePRY8eLG7mbzaHGXxBQte9BymTQJddzc16Qr-e1MqehEvmcB88_oIuQS6AEb1kjItS0kruUQLlvIjMgNWq1LUUhyT2U_6lJyltKEUoAY1I_VHWhSYCiz6GBpXBJ-_qcUtxmLnbIdDiIXF-FbucBhczDm3x9iFc3LicZvcxXeck9f7u5fVY7l-fnha3a7Llkk5lIxK7SV41daVYC7vxpm1WgtsWwqMcaWqRjWSMlbVQvCR8ag0YMW9Bs7n5Grqm_d7P7g0mE04xH0eaThAPkMqqTJFJ6qNIaXovOljt8P4aYCa0Y8ZBZhRgJn85JKbqaQL_W_Pf_DrP3DXbw0IaSC_2anpredfwexwhQ</recordid><startdate>20240101</startdate><enddate>20240101</enddate><creator>Berezhnoy, Alexander</creator><creator>Melikhov, Dmitri</creator><general>EDP Sciences, IOP Publishing and Società Italiana di Fisica</general><general>IOP Publishing</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0003-4654-6933</orcidid></search><sort><creationdate>20240101</creationdate><title>vs. as a probe of a scalar mediator dark-matter scenario</title><author>Berezhnoy, Alexander ; Melikhov, Dmitri</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c255t-2059f51f6c8742ead132dd994acc01223667b6b50227844342eafa691a73f9133</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Particle decay</topic><topic>Standard model (particle physics)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Berezhnoy, Alexander</creatorcontrib><creatorcontrib>Melikhov, Dmitri</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Europhysics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Berezhnoy, Alexander</au><au>Melikhov, Dmitri</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>vs. as a probe of a scalar mediator dark-matter scenario</atitle><jtitle>Europhysics letters</jtitle><stitle>EPL</stitle><addtitle>EPL</addtitle><date>2024-01-01</date><risdate>2024</risdate><volume>145</volume><issue>1</issue><spage>14001</spage><pages>14001-</pages><issn>0295-5075</issn><eissn>1286-4854</eissn><coden>EULEEJ</coden><abstract>Recently, Belle II reported the observation of the decay , where M X is the missing mass, with the branching ratio much exceeding which is the only Standard Model (SM) process contributing to this reaction. If confirmed, this might be an indication of new non-SM particles produced in this decay. One of the possible explanations of the observed effect could be light dark-matter (DM) particles produced via a scalar mediator field. We give simple arguments, that a combined analysis of the and reactions would be a clean probe of the scalar mediator scenario: i) making use of an observed value and ii) assuming that the effect is due to the light dark-matter coupling to the top quark via a scalar mediator field, one finds an upper limit . Within the discussed scenario, this upper limit does not depend on the mass of the scalar mediator nor on the specific details of the unobserved dark-matter particles in the final state.</abstract><cop>Les Ulis</cop><pub>EDP Sciences, IOP Publishing and Società Italiana di Fisica</pub><doi>10.1209/0295-5075/ad1d03</doi><tpages>4</tpages><orcidid>https://orcid.org/0000-0003-4654-6933</orcidid></addata></record>
fulltext fulltext
identifier ISSN: 0295-5075
ispartof Europhysics letters, 2024-01, Vol.145 (1), p.14001
issn 0295-5075
1286-4854
language eng
recordid cdi_iop_journals_10_1209_0295_5075_ad1d03
source Institute of Physics Journals
subjects Particle decay
Standard model (particle physics)
title vs. as a probe of a scalar mediator dark-matter scenario
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-02T14%3A29%3A44IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_iop_j&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=vs.%20as%20a%20probe%20of%20a%20scalar%20mediator%20dark-matter%20scenario&rft.jtitle=Europhysics%20letters&rft.au=Berezhnoy,%20Alexander&rft.date=2024-01-01&rft.volume=145&rft.issue=1&rft.spage=14001&rft.pages=14001-&rft.issn=0295-5075&rft.eissn=1286-4854&rft.coden=EULEEJ&rft_id=info:doi/10.1209/0295-5075/ad1d03&rft_dat=%3Cproquest_iop_j%3E3110115656%3C/proquest_iop_j%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=3110115656&rft_id=info:pmid/&rfr_iscdi=true