Evidence for the decays B0 → 𝐷(*)0 ϕ and updated measurements of the branching fractions of the 𝐵0𝑠 → 𝐷(*)0 ϕ decays
Abstract Evidence for the decays B0 → D ¯ $$ \overline{D} $$...
| Main Authors: | , , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Springer Berlin Heidelberg
2023
|
| Online Access: | https://hdl.handle.net/1721.1/152934 |
| _version_ | 1826189238891184128 |
|---|---|
| author | Aaij, R. Abdelmotteleb, A. S. W. Abellan Beteta, C. Abudinén, F. Ackernley, T. Adeva, B. Adinolfi, M. Adlarson, P. Afsharnia, H. Agapopoulou, C. Aidala, C. A. Ajaltouni, Z. Akar, S. Akiba, K. Albicocco, P. Albrecht, J. |
| author_facet | Aaij, R. Abdelmotteleb, A. S. W. Abellan Beteta, C. Abudinén, F. Ackernley, T. Adeva, B. Adinolfi, M. Adlarson, P. Afsharnia, H. Agapopoulou, C. Aidala, C. A. Ajaltouni, Z. Akar, S. Akiba, K. Albicocco, P. Albrecht, J. |
| author_sort | Aaij, R. |
| collection | MIT |
| description | Abstract
Evidence for the decays B0 →
D
¯
$$ \overline{D} $$
0ϕ and B0 →
D
¯
$$ \overline{D} $$
*0ϕ is reported with a significance of 3.6 σ and 4.3 σ, respectively. The analysis employs pp collision data at centre-of-mass energies
s
$$ \sqrt{s} $$
= 7, 8 and 13 TeV collected by the LHCb detector and corresponding to an integrated luminosity of 9 fb−1. The branching fractions are measured to be
B
B
0
→
D
¯
0
ϕ
=
7.7
±
2.1
±
0.7
±
0.7
×
10
−
7
,
B
B
0
→
D
¯
∗
0
ϕ
=
2.2
±
0.5
±
0.2
±
0.2
×
10
−
6
.
$$ {\displaystyle \begin{array}{l}\mathcal{B}\left({B}^0\to {\overline{D}}^0\phi \right)=\left(7.7\pm 2.1\pm 0.7\pm 0.7\right)\times {10}^{-7},\\ {}\mathcal{B}\left({B}^0\to {\overline{D}}^{\ast 0}\phi \right)=\left(2.2\pm 0.5\pm 0.2\pm 0.2\right)\times {10}^{-6}.\end{array}} $$
In these results, the first uncertainty is statistical, the second systematic, and the third is related to the branching fraction of the B0 →
D
¯
$$ \overline{D} $$
0K+K− decay, used for normalisation. By combining the branching fractions of the decays B0 →
D
¯
∗
0
ϕ
$$ {\overline{D}}^{\left(\ast \right)0}\phi $$
and B0 →
D
¯
∗
0
ω
$$ {\overline{D}}^{\left(\ast \right)0}\omega $$
, the ω-ϕ mixing angle δ is constrained to be tan2 δ = (3.6 ± 0.7 ± 0.4) × 10−3, where the first uncertainty is statistical and the second systematic. An updated measurement of the branching fractions of the
B
s
0
$$ {B}_s^0 $$
→
D
¯
∗
0
ϕ
$$ {\overline{D}}^{\left(\ast \right)0}\phi $$
decays, which can be used to determine the CKM angle γ, leads to
B
B
s
0
→
D
¯
0
ϕ
=
2.30
±
0.10
±
0.11
±
0.20
×
10
−
5
,
B
B
s
0
→
D
¯
∗
0
ϕ
=
3.17
±
0.16
±
0.17
±
0.27
×
10
−
5
.
$$ {\displaystyle \begin{array}{c}\mathcal{B}\left({B}_s^0\to {\overline{D}}^0\phi \right)=\left(2.30\pm 0.10\pm 0.11\pm 0.20\right)\times {10}^{-5},\\ {}\mathcal{B}\left({B}_s^0\to {\overline{D}}^{\ast 0}\phi \right)=\left(3.17\pm 0.16\pm 0.17\pm 0.27\right)\times {10}^{-5}.\end{array}} $$ |
| first_indexed | 2024-09-23T08:11:59Z |
| format | Article |
| id | mit-1721.1/152934 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T08:11:59Z |
| publishDate | 2023 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1529342023-11-10T03:54:27Z Evidence for the decays B0 → 𝐷(*)0 ϕ and updated measurements of the branching fractions of the 𝐵0𝑠 → 𝐷(*)0 ϕ decays Aaij, R. Abdelmotteleb, A. S. W. Abellan Beteta, C. Abudinén, F. Ackernley, T. Adeva, B. Adinolfi, M. Adlarson, P. Afsharnia, H. Agapopoulou, C. Aidala, C. A. Ajaltouni, Z. Akar, S. Akiba, K. Albicocco, P. Albrecht, J. Abstract Evidence for the decays B0 → D ¯ $$ \overline{D} $$ 0ϕ and B0 → D ¯ $$ \overline{D} $$ *0ϕ is reported with a significance of 3.6 σ and 4.3 σ, respectively. The analysis employs pp collision data at centre-of-mass energies s $$ \sqrt{s} $$ = 7, 8 and 13 TeV collected by the LHCb detector and corresponding to an integrated luminosity of 9 fb−1. The branching fractions are measured to be B B 0 → D ¯ 0 ϕ = 7.7 ± 2.1 ± 0.7 ± 0.7 × 10 − 7 , B B 0 → D ¯ ∗ 0 ϕ = 2.2 ± 0.5 ± 0.2 ± 0.2 × 10 − 6 . $$ {\displaystyle \begin{array}{l}\mathcal{B}\left({B}^0\to {\overline{D}}^0\phi \right)=\left(7.7\pm 2.1\pm 0.7\pm 0.7\right)\times {10}^{-7},\\ {}\mathcal{B}\left({B}^0\to {\overline{D}}^{\ast 0}\phi \right)=\left(2.2\pm 0.5\pm 0.2\pm 0.2\right)\times {10}^{-6}.\end{array}} $$ In these results, the first uncertainty is statistical, the second systematic, and the third is related to the branching fraction of the B0 → D ¯ $$ \overline{D} $$ 0K+K− decay, used for normalisation. By combining the branching fractions of the decays B0 → D ¯ ∗ 0 ϕ $$ {\overline{D}}^{\left(\ast \right)0}\phi $$ and B0 → D ¯ ∗ 0 ω $$ {\overline{D}}^{\left(\ast \right)0}\omega $$ , the ω-ϕ mixing angle δ is constrained to be tan2 δ = (3.6 ± 0.7 ± 0.4) × 10−3, where the first uncertainty is statistical and the second systematic. An updated measurement of the branching fractions of the B s 0 $$ {B}_s^0 $$ → D ¯ ∗ 0 ϕ $$ {\overline{D}}^{\left(\ast \right)0}\phi $$ decays, which can be used to determine the CKM angle γ, leads to B B s 0 → D ¯ 0 ϕ = 2.30 ± 0.10 ± 0.11 ± 0.20 × 10 − 5 , B B s 0 → D ¯ ∗ 0 ϕ = 3.17 ± 0.16 ± 0.17 ± 0.27 × 10 − 5 . $$ {\displaystyle \begin{array}{c}\mathcal{B}\left({B}_s^0\to {\overline{D}}^0\phi \right)=\left(2.30\pm 0.10\pm 0.11\pm 0.20\right)\times {10}^{-5},\\ {}\mathcal{B}\left({B}_s^0\to {\overline{D}}^{\ast 0}\phi \right)=\left(3.17\pm 0.16\pm 0.17\pm 0.27\right)\times {10}^{-5}.\end{array}} $$ 2023-11-09T21:43:00Z 2023-11-09T21:43:00Z 2023-10-20 2023-10-29T04:15:39Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/152934 Journal of High Energy Physics. 2023 Oct 20;2023(10):123 PUBLISHER_CC en https://doi.org/10.1007/JHEP10(2023)123 Creative Commons Attribution https://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. Adlarson, P. Afsharnia, H. Agapopoulou, C. Aidala, C. A. Ajaltouni, Z. Akar, S. Akiba, K. Albicocco, P. Albrecht, J. Evidence for the decays B0 → 𝐷(*)0 ϕ and updated measurements of the branching fractions of the 𝐵0𝑠 → 𝐷(*)0 ϕ decays |
| title | Evidence for the decays B0 → 𝐷(*)0 ϕ and updated measurements of the branching fractions of the 𝐵0𝑠 → 𝐷(*)0 ϕ decays |
| title_full | Evidence for the decays B0 → 𝐷(*)0 ϕ and updated measurements of the branching fractions of the 𝐵0𝑠 → 𝐷(*)0 ϕ decays |
| title_fullStr | Evidence for the decays B0 → 𝐷(*)0 ϕ and updated measurements of the branching fractions of the 𝐵0𝑠 → 𝐷(*)0 ϕ decays |
| title_full_unstemmed | Evidence for the decays B0 → 𝐷(*)0 ϕ and updated measurements of the branching fractions of the 𝐵0𝑠 → 𝐷(*)0 ϕ decays |
| title_short | Evidence for the decays B0 → 𝐷(*)0 ϕ and updated measurements of the branching fractions of the 𝐵0𝑠 → 𝐷(*)0 ϕ decays |
| title_sort | evidence for the decays b0 𝐷 0 ϕ and updated measurements of the branching fractions of the 𝐵0𝑠 𝐷 0 ϕ decays |
| url | https://hdl.handle.net/1721.1/152934 |
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