Publication
Search for the lepton flavor violating decay Z→eμ in pp collisions at $\sqrt{s}$ TeV with the ATLAS detector
| dc.contributor.author | ATLAS collaboration (2900 authors) | |
| dc.contributor.author | Aguilar-Saavedra, Juan Antonio | |
| dc.contributor.author | Amor Dos Santos, Susana Patricia | |
| dc.contributor.author | Anjos, Nuno | |
| dc.contributor.author | Araque, Juan Pedro | |
| dc.contributor.author | Cantrill, Robert | |
| dc.contributor.author | Carvalho, João | |
| dc.contributor.author | Castro, Nuno Filipe | |
| dc.contributor.author | Conde Muiño, Patricia | |
| dc.contributor.author | Da Cunha Sargedas De Sousa, Mario Jose | |
| dc.contributor.author | Do Valle Wemans, André | |
| dc.contributor.author | Fiolhais, Miguel | |
| dc.contributor.author | Galhardo, Bruno | |
| dc.contributor.author | Gomes, Agostinho | |
| dc.contributor.author | Gonçalo, Ricardo | |
| dc.contributor.author | Jorge, Pedro | |
| dc.contributor.author | Lopes, Lourenco | |
| dc.contributor.author | Machado Miguens, Joana | |
| dc.contributor.author | Maio, Amélia | |
| dc.contributor.author | Maneira, José | |
| dc.contributor.author | Marques, Carlos | |
| dc.contributor.author | Onofre, António | |
| dc.contributor.author | Palma, Alberto | |
| dc.contributor.author | Pedro, Rute | |
| dc.contributor.author | Pina, João Antonio | |
| dc.contributor.author | Pinto, Belmiro | |
| dc.contributor.author | Santos, Helena | |
| dc.contributor.author | Saraiva, João | |
| dc.contributor.author | Silva, José | |
| dc.contributor.author | Tavares Delgado, Ademar | |
| dc.contributor.author | Veloso, Filipe | |
| dc.contributor.author | Wolters, Helmut | |
| dc.date.accessioned | 2019-02-04T04:43:26Z | |
| dc.date.available | 2019-02-04T04:43:26Z | |
| dc.date.issued | 2014-10-23 | |
| dc.date.updated | 2019-02-04T04:43:26Z | |
| dc.description.abstract | <p>The ATLAS detector at the Large Hadron Collider is used to search for the lepton flavor violating process <inline-formula><mml:math display="inline"><mml:mi>Z</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:mi>e</mml:mi><mml:mi>μ</mml:mi></mml:math></inline-formula> in <inline-formula><mml:math display="inline"><mml:mi>p</mml:mi><mml:mi>p</mml:mi></mml:math></inline-formula> collisions using <inline-formula><mml:math display="inline"><mml:mrow><mml:mn>20.3</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:msup><mml:mrow><mml:mi>fb</mml:mi></mml:mrow><mml:mrow><mml:mo>-</mml:mo><mml:mn>1</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math></inline-formula> of data collected at <inline-formula><mml:math display="inline"><mml:mrow><mml:msqrt><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:msqrt><mml:mo>=</mml:mo><mml:mn>8</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>TeV</mml:mi></mml:mrow></mml:math></inline-formula>. An enhancement in the <inline-formula><mml:math display="inline"><mml:mi>e</mml:mi><mml:mi>μ</mml:mi></mml:math></inline-formula> invariant mass spectrum is searched for at the <inline-formula><mml:math display="inline"><mml:mi>Z</mml:mi></mml:math></inline-formula>-boson mass. The number of <inline-formula><mml:math display="inline"><mml:mi>Z</mml:mi></mml:math></inline-formula> bosons produced in the data sample is estimated using events of similar topology, <inline-formula><mml:math display="inline"><mml:mi>Z</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:mi>e</mml:mi><mml:mi>e</mml:mi></mml:math></inline-formula> and <inline-formula><mml:math display="inline"><mml:mi>μ</mml:mi><mml:mi>μ</mml:mi></mml:math></inline-formula>, significantly reducing the systematic uncertainty in the measurement. There is no evidence of an enhancement at the <inline-formula><mml:math display="inline"><mml:mi>Z</mml:mi></mml:math></inline-formula>-boson mass, resulting in an upper limit on the branching fraction, <inline-formula><mml:math display="inline"><mml:mrow><mml:mi mathvariant="script">B</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mi>Z</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:mi>e</mml:mi><mml:mi>μ</mml:mi><mml:mo stretchy="false">)</mml:mo><mml:mo><</mml:mo><mml:mn>7.5</mml:mn><mml:mo>×</mml:mo><mml:mn>1</mml:mn><mml:msup><mml:mrow><mml:mn>0</mml:mn></mml:mrow><mml:mrow><mml:mo>-</mml:mo><mml:mn>7</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math></inline-formula> at the 95% confidence level.</p> | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Phys.Rev. D90 (2014) 072010; DOI 10.1103/PhysRevD.90.072010 | |
| dc.identifier.uri | http://dx.doi.org/10.1103/PhysRevD.90.072010 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/26672 | |
| dc.language.iso | eng | |
| dc.title | Search for the lepton flavor violating decay Z→eμ in pp collisions at $\sqrt{s}$ TeV with the ATLAS detector | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |