Search for the lepton-flavour violating decays B0 → K*0μ±e∓ and B s 0 $$ {B}_s^0 $$ → ϕμ±e∓
Abstract A search for the lepton-flavour violating decays B0 → K*0μ±e∓ and B s 0...
| Main Authors: | , , , , , , , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer Berlin Heidelberg
2023
|
| Online Access: | https://hdl.handle.net/1721.1/150928 |
| _version_ | 1826200104153907200 |
|---|---|
| author | Aaij, R. Abdelmotteleb, A. S. W. Abellan Beteta, C. Abudinén, F. Ackernley, T. Adeva, B. Adinolfi, M. Afsharnia, H. Agapopoulou, C. Aidala, C. A. Aiola, S. Ajaltouni, Z. Akar, S. Akiba, K. Albrecht, J. Alessio, F. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Aaij, R. Abdelmotteleb, A. S. W. Abellan Beteta, C. Abudinén, F. Ackernley, T. Adeva, B. Adinolfi, M. Afsharnia, H. Agapopoulou, C. Aidala, C. A. Aiola, S. Ajaltouni, Z. Akar, S. Akiba, K. Albrecht, J. Alessio, F. |
| author_sort | Aaij, R. |
| collection | MIT |
| description | Abstract
A search for the lepton-flavour violating decays B0 → K*0μ±e∓ and
B
s
0
$$ {B}_s^0 $$
→ ϕμ±e∓ is presented, using proton-proton collision data collected by the LHCb detector at the LHC, corresponding to an integrated luminosity of 9 fb−1. No significant signals are observed and upper limits of
B
B
0
→
K
∗
0
μ
+
e
−
<
5.7
×
10
−
9
6.9
×
10
−
9
,
B
B
0
→
K
∗
0
μ
−
e
+
<
6.8
×
10
−
9
7.9
×
10
−
9
,
B
B
0
→
K
∗
0
μ
±
e
∓
<
10.1
×
10
−
9
11.7
×
10
−
9
,
B
B
s
0
→
ϕ
μ
±
e
∓
<
16.0
×
10
−
9
19.8
×
10
−
9
$$ {\displaystyle \begin{array}{c}\mathcal{B}\left({B}^0\to {K}^{\ast 0}{\mu}^{+}{e}^{-}\right)<5.7\times {10}^{-9}\left(6.9\times {10}^{-9}\right),\\ {}\mathcal{B}\left({B}^0\to {K}^{\ast 0}{\mu}^{-}{e}^{+}\right)<6.8\times {10}^{-9}\left(7.9\times {10}^{-9}\right),\\ {}\mathcal{B}\left({B}^0\to {K}^{\ast 0}{\mu}^{\pm }{e}^{\mp}\right)<10.1\times {10}^{-9}\left(11.7\times {10}^{-9}\right),\\ {}\mathcal{B}\left({B}_s^0\to \phi {\mu}^{\pm }{e}^{\mp}\right)<16.0\times {10}^{-9}\left(19.8\times {10}^{-9}\right)\end{array}} $$
are set at 90% (95%) confidence level. These results constitute the world’s most stringent limits to date, with the limit on the decay
B
s
0
$$ {B}_s^0 $$
→ ϕμ±e∓ the first being set. In addition, limits are reported for scalar and left-handed lepton-flavour violating New Physics scenarios. |
| first_indexed | 2024-09-23T11:31:15Z |
| format | Article |
| id | mit-1721.1/150928 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:31:15Z |
| publishDate | 2023 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1509282024-01-31T18:52:14Z Search for the lepton-flavour violating decays B0 → K*0μ±e∓ and B s 0 $$ {B}_s^0 $$ → ϕμ±e∓ Aaij, R. Abdelmotteleb, A. S. W. Abellan Beteta, C. Abudinén, F. Ackernley, T. Adeva, B. Adinolfi, M. Afsharnia, H. Agapopoulou, C. Aidala, C. A. Aiola, S. Ajaltouni, Z. Akar, S. Akiba, K. Albrecht, J. Alessio, F. Massachusetts Institute of Technology. Department of Physics Abstract A search for the lepton-flavour violating decays B0 → K*0μ±e∓ and B s 0 $$ {B}_s^0 $$ → ϕμ±e∓ is presented, using proton-proton collision data collected by the LHCb detector at the LHC, corresponding to an integrated luminosity of 9 fb−1. No significant signals are observed and upper limits of B B 0 → K ∗ 0 μ + e − < 5.7 × 10 − 9 6.9 × 10 − 9 , B B 0 → K ∗ 0 μ − e + < 6.8 × 10 − 9 7.9 × 10 − 9 , B B 0 → K ∗ 0 μ ± e ∓ < 10.1 × 10 − 9 11.7 × 10 − 9 , B B s 0 → ϕ μ ± e ∓ < 16.0 × 10 − 9 19.8 × 10 − 9 $$ {\displaystyle \begin{array}{c}\mathcal{B}\left({B}^0\to {K}^{\ast 0}{\mu}^{+}{e}^{-}\right)<5.7\times {10}^{-9}\left(6.9\times {10}^{-9}\right),\\ {}\mathcal{B}\left({B}^0\to {K}^{\ast 0}{\mu}^{-}{e}^{+}\right)<6.8\times {10}^{-9}\left(7.9\times {10}^{-9}\right),\\ {}\mathcal{B}\left({B}^0\to {K}^{\ast 0}{\mu}^{\pm }{e}^{\mp}\right)<10.1\times {10}^{-9}\left(11.7\times {10}^{-9}\right),\\ {}\mathcal{B}\left({B}_s^0\to \phi {\mu}^{\pm }{e}^{\mp}\right)<16.0\times {10}^{-9}\left(19.8\times {10}^{-9}\right)\end{array}} $$ are set at 90% (95%) confidence level. These results constitute the world’s most stringent limits to date, with the limit on the decay B s 0 $$ {B}_s^0 $$ → ϕμ±e∓ the first being set. In addition, limits are reported for scalar and left-handed lepton-flavour violating New Physics scenarios. 2023-06-20T19:34:16Z 2023-06-20T19:34:16Z 2023-06-14 2023-06-18T03:10:34Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/150928 Journal of High Energy Physics. 2023 Jun 14;2023(6):73 PUBLISHER_CC en https://doi.org/10.1007/JHEP06(2023)073 Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ The Author(s) application/pdf Springer Berlin Heidelberg Springer Berlin Heidelberg |
| spellingShingle | Aaij, R. Abdelmotteleb, A. S. W. Abellan Beteta, C. Abudinén, F. Ackernley, T. Adeva, B. Adinolfi, M. Afsharnia, H. Agapopoulou, C. Aidala, C. A. Aiola, S. Ajaltouni, Z. Akar, S. Akiba, K. Albrecht, J. Alessio, F. Search for the lepton-flavour violating decays B0 → K*0μ±e∓ and B s 0 $$ {B}_s^0 $$ → ϕμ±e∓ |
| title | Search for the lepton-flavour violating decays B0 → K*0μ±e∓ and B s 0 $$ {B}_s^0 $$ → ϕμ±e∓ |
| title_full | Search for the lepton-flavour violating decays B0 → K*0μ±e∓ and B s 0 $$ {B}_s^0 $$ → ϕμ±e∓ |
| title_fullStr | Search for the lepton-flavour violating decays B0 → K*0μ±e∓ and B s 0 $$ {B}_s^0 $$ → ϕμ±e∓ |
| title_full_unstemmed | Search for the lepton-flavour violating decays B0 → K*0μ±e∓ and B s 0 $$ {B}_s^0 $$ → ϕμ±e∓ |
| title_short | Search for the lepton-flavour violating decays B0 → K*0μ±e∓ and B s 0 $$ {B}_s^0 $$ → ϕμ±e∓ |
| title_sort | search for the lepton flavour violating decays b0 k 0μ e∓ and b s 0 b s 0 ϕμ e∓ |
| url | https://hdl.handle.net/1721.1/150928 |
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