Measurement of the CKM angle γ using the B± → D*h± channels
A measurement of the CP-violating observables from B± → D*K± and B± → D*π± decays is presented, where D*(D) is an admixture of D*0 and D...
| Main Authors: | , , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Springer Berlin Heidelberg
2023
|
| Online Access: | https://hdl.handle.net/1721.1/153210 |
| _version_ | 1811003172597006336 |
|---|---|
| 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 | A measurement of the CP-violating observables from B± → D*K± and B± → D*π± decays is presented, where D*(D) is an admixture of D*0 and
D
¯
∗
0
$$ {\overline{D}}^{\ast 0} $$
(D0 and
D
¯
0
$$ {\overline{D}}^0 $$
) states and is reconstructed through the decay chains D* → Dπ0/γ and
D
→
K
S
0
π
+
π
−
/
K
S
0
K
+
K
−
$$ D\to {K}_S^0{\pi}^{+}{\pi}^{-}/{K}_S^0{K}^{+}{K}^{-} $$
. The measurement is performed by analysing the signal yield variation across the D decay phase space and is independent of any amplitude model. The data sample used was collected by the LHCb experiment in proton-proton collisions and corresponds to a total integrated luminosity of 9 fb−1 at centre-of-mass energies of 7, 8 and 13 TeV. The CKM angle γ is determined to be
69
−
14
+
13
∘
$$ {\left({69}_{-14}^{+13}\right)}^{\circ } $$
using the measured CP-violating observables. The hadronic parameters
r
B
D
∗
K
±
,
r
B
D
∗
π
±
,
δ
B
D
∗
K
±
,
δ
B
D
∗
π
±
$$ {r}_B^{D^{\ast }{K}^{\pm }},{r}_B^{D^{\ast }{\pi}^{\pm }},{\delta}_B^{D^{\ast }{K}^{\pm }},{\delta}_B^{D^{\ast }{\pi}^{\pm }} $$
, which are the ratios and strong phase differences between favoured and suppressed B± decays, are also reported. |
| first_indexed | 2024-09-23T16:00:12Z |
| format | Article |
| id | mit-1721.1/153210 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T16:00:12Z |
| publishDate | 2023 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1532102023-12-20T03:04:50Z Measurement of the CKM angle γ using the B± → D*h± channels 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. A measurement of the CP-violating observables from B± → D*K± and B± → D*π± decays is presented, where D*(D) is an admixture of D*0 and D ¯ ∗ 0 $$ {\overline{D}}^{\ast 0} $$ (D0 and D ¯ 0 $$ {\overline{D}}^0 $$ ) states and is reconstructed through the decay chains D* → Dπ0/γ and D → K S 0 π + π − / K S 0 K + K − $$ D\to {K}_S^0{\pi}^{+}{\pi}^{-}/{K}_S^0{K}^{+}{K}^{-} $$ . The measurement is performed by analysing the signal yield variation across the D decay phase space and is independent of any amplitude model. The data sample used was collected by the LHCb experiment in proton-proton collisions and corresponds to a total integrated luminosity of 9 fb−1 at centre-of-mass energies of 7, 8 and 13 TeV. The CKM angle γ is determined to be 69 − 14 + 13 ∘ $$ {\left({69}_{-14}^{+13}\right)}^{\circ } $$ using the measured CP-violating observables. The hadronic parameters r B D ∗ K ± , r B D ∗ π ± , δ B D ∗ K ± , δ B D ∗ π ± $$ {r}_B^{D^{\ast }{K}^{\pm }},{r}_B^{D^{\ast }{\pi}^{\pm }},{\delta}_B^{D^{\ast }{K}^{\pm }},{\delta}_B^{D^{\ast }{\pi}^{\pm }} $$ , which are the ratios and strong phase differences between favoured and suppressed B± decays, are also reported. 2023-12-19T16:55:06Z 2023-12-19T16:55:06Z 2023-12-01 2023-12-17T04:09:50Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/153210 Journal of High Energy Physics. 2023 Dec 01;2023(12):13 PUBLISHER_CC en https://doi.org/10.1007/JHEP12(2023)013 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. Measurement of the CKM angle γ using the B± → D*h± channels |
| title | Measurement of the CKM angle γ using the B± → D*h± channels |
| title_full | Measurement of the CKM angle γ using the B± → D*h± channels |
| title_fullStr | Measurement of the CKM angle γ using the B± → D*h± channels |
| title_full_unstemmed | Measurement of the CKM angle γ using the B± → D*h± channels |
| title_short | Measurement of the CKM angle γ using the B± → D*h± channels |
| title_sort | measurement of the ckm angle γ using the b d h channels |
| url | https://hdl.handle.net/1721.1/153210 |
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