Search for the lepton-flavor violating decay <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi>B</mml:mi><mml:mi>s</mml:mi><mml:mn>0</mml:mn></mml:msubsup><mml:mo stretchy="false">→</mml:mo><mml:mi>ϕ</mml:mi><mml:msup><mml:mi>μ</mml:mi><mml:mo>±</mml:mo></mml:msup><mml:msup><mml:mi>τ</mml:mi><mml:mo>∓</mml:mo></mml:msup></mml:math>


Aaij, R ORCID: 0000-0003-0533-1952, Abdelmotteleb, ASW ORCID: 0000-0001-7905-0542, Abellan Beteta, C, Abudinén, F ORCID: 0000-0002-6737-3528, Ackernley, T ORCID: 0000-0002-5951-3498, Adefisoye, AA ORCID: 0000-0003-2448-1550, Adeva, B ORCID: 0000-0001-9756-3712, Adinolfi, M ORCID: 0000-0002-1326-1264, Adlarson, P ORCID: 0000-0001-6280-3851, Agapopoulou, C ORCID: 0000-0002-2368-0147 et al (show 1078 more authors) (2024) Search for the lepton-flavor violating decay <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi>B</mml:mi><mml:mi>s</mml:mi><mml:mn>0</mml:mn></mml:msubsup><mml:mo stretchy="false">→</mml:mo><mml:mi>ϕ</mml:mi><mml:msup><mml:mi>μ</mml:mi><mml:mo>±</mml:mo></mml:msup><mml:msup><mml:mi>τ</mml:mi><mml:mo>∓</mml:mo></mml:msup></mml:math>. Physical Review D, 110 (7). 072014-. ISSN 2470-0010, 2470-0029

Access the full-text of this item by clicking on the Open Access link.

Abstract

<jats:p>A search for the lepton-flavor violating decays <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msubsup><a:mi>B</a:mi><a:mi>s</a:mi><a:mn>0</a:mn></a:msubsup><a:mo stretchy="false">→</a:mo><a:mi>ϕ</a:mi><a:msup><a:mi>μ</a:mi><a:mo>±</a:mo></a:msup><a:msup><a:mi>τ</a:mi><a:mo>∓</a:mo></a:msup></a:math> is presented, using a sample of proton-proton collisions at center-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and corresponding to a total integrated luminosity of <d:math xmlns:d="http://www.w3.org/1998/Math/MathML" display="inline"><d:mn>9</d:mn><d:mtext> </d:mtext><d:mtext> </d:mtext><d:msup><d:mi>fb</d:mi><d:mrow><d:mo>−</d:mo><d:mn>1</d:mn></d:mrow></d:msup></d:math>. The <f:math xmlns:f="http://www.w3.org/1998/Math/MathML" display="inline"><f:mi>τ</f:mi></f:math> leptons are selected using decays with three charged pions. No significant excess is observed, and an upper limit on the branching fraction is determined to be <h:math xmlns:h="http://www.w3.org/1998/Math/MathML" display="inline"><h:mi mathvariant="script">B</h:mi><h:mrow><h:mo stretchy="false">(</h:mo><h:msubsup><h:mi>B</h:mi><h:mi>s</h:mi><h:mn>0</h:mn></h:msubsup><h:mo stretchy="false">→</h:mo><h:mi>ϕ</h:mi><h:msup><h:mi>μ</h:mi><h:mo>±</h:mo></h:msup><h:msup><h:mi>τ</h:mi><h:mo>∓</h:mo></h:msup><h:mo stretchy="false">)</h:mo></h:mrow><h:mo>&lt;</h:mo><h:mn>1.0</h:mn><h:mo>×</h:mo><h:msup><h:mn>10</h:mn><h:mrow><h:mo>−</h:mo><h:mn>5</h:mn></h:mrow></h:msup></h:math> at 90% confidence level.</jats:p> <jats:sec> <jats:title/> <jats:supplementary-material> <jats:permissions> <jats:copyright-statement>© 2024 CERN, for the LHCb Collaboration</jats:copyright-statement> <jats:copyright-year>2024</jats:copyright-year> <jats:copyright-holder>CERN</jats:copyright-holder> </jats:permissions> </jats:supplementary-material> </jats:sec>

Item Type: Article
Uncontrolled Keywords: 4902 Mathematical Physics, 5107 Particle and High Energy Physics, 49 Mathematical Sciences, 51 Physical Sciences
Divisions: Faculty of Humanities and Social Sciences
Faculty of Science and Engineering
Faculty of Science and Engineering > School of Engineering
Faculty of Science and Engineering > School of Physical Sciences
Faculty of Humanities and Social Sciences > School of the Arts
Depositing User: Symplectic Admin
Date Deposited: 28 Jan 2025 15:28
Last Modified: 28 Jan 2025 15:28
DOI: 10.1103/physrevd.110.072014
Open Access URL: https://journals.aps.org/prd/pdf/10.1103/PhysRevD....
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3189948
Altmetric
CORE (COnnecting REpositories)