Search for Lepton-Universality Violation in B+ →k++-Decays

The LHCb Collaboration; Семен Исаакович Эйдельман; Павел Петрович Кроковный; Виталий Сергеевич Воробьев

doi:10.1103/PhysRevLett.122.191801

Search for Lepton-Universality Violation in B+ →k++-Decays

The LHCb Collaboration, Семен Исаакович Эйдельман, Павел Петрович Кроковный, Виталий Сергеевич Воробьев

Результат исследования: Научные публикации в периодических изданиях › статья

115 Цитирования (Scopus)

Аннотация

A measurement of the ratio of branching fractions of the decays B+→K+μ+μ-and B+→K+e+e-is presented. The proton-proton collision data used correspond to an integrated luminosity of 5.0 fb-1 recorded with the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV. For the dilepton mass-squared range 1.1<q2<6.0 GeV2/c4 the ratio of branching fractions is measured to be RK=0.846-0.054+0.060-0.014+0.016, where the first uncertainty is statistical and the second systematic. This is the most precise measurement of RK to date and is compatible with the standard model at the level of 2.5 standard deviations.

Язык оригинала	английский
Номер статьи	191801
Страницы (с-по)	191801
Число страниц	13
Журнал	Physical Review Letters
Том	122
Номер выпуска	19
DOI	https://doi.org/10.1103/PhysRevLett.122.191801
Состояние	Опубликовано - 13 мая 2019

Доступ к документу

10.1103/PhysRevLett.122.191801

Link to publication in Scopus

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Цитировать

The LHCb Collaboration, Эйдельман, С. И., Кроковный, П. П., & Воробьев, В. С. (2019). Search for Lepton-Universality Violation in B+ →k++-Decays. Physical Review Letters, 122(19), 191801. [191801]. https://doi.org/10.1103/PhysRevLett.122.191801

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abstract = "A measurement of the ratio of branching fractions of the decays B+→K+μ+μ-and B+→K+e+e-is presented. The proton-proton collision data used correspond to an integrated luminosity of 5.0 fb-1 recorded with the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV. For the dilepton mass-squared range 1.1",

author = "{The LHCb Collaboration} and R. Aaij and {Abell{\'a}n Beteta}, C. and B. Adeva and M. Adinolfi and Aidala, {C. A.} and Z. Ajaltouni and S. Akar and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and F. Archilli and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and Back, {J. J.} and S. Baker and V. Balagura and W. Baldini and A. Baranov and Barlow, {R. J.} and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and V. Batozskaya and B. Batsukh and A. Battig and V. Battista and A. Bay and A. Bondar and V. Kudryavtsev and T. Maltsev and L. Shekhtman and Эйдельман, {Семен Исаакович} and Кроковный, {Павел Петрович} and Воробьев, {Виталий Сергеевич}",

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Search for Lepton-Universality Violation in B+ →k++-Decays. / The LHCb Collaboration ; Эйдельман, Семен Исаакович ; Кроковный, Павел Петрович ; Воробьев, Виталий Сергеевич.

В: Physical Review Letters, Том 122, № 19, 191801, 13.05.2019, стр. 191801.

Результат исследования: Научные публикации в периодических изданиях › статья

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