Measurement of the branching fraction of the $${{B} ^0} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} $$ B 0 → D s + π - decay
Abstract A branching fraction measurement of the $${{B} ^0} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} $$...
| Main Authors: | , , , , , , , , , , , , , , , , , , , |
|---|---|
| Andre forfattere: | |
| Format: | Article |
| Sprog: | English |
| Udgivet: |
Springer Berlin Heidelberg
2021
|
| Online adgang: | https://hdl.handle.net/1721.1/136764 |
| _version_ | 1826204916699365376 |
|---|---|
| author | Aaij, R. Beteta, C. A Ackernley, T. Adeva, B. Adinolfi, M. Afsharnia, H. Aidala, C. A Aiola, S. Ajaltouni, Z. Akar, S. Albrecht, J. Alessio, F. Alexander, M. Albero, A. A Aliouche, Z. Alkhazov, G. Cartelle, P. A Amato, S. Amhis, Y. An, L. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Aaij, R. Beteta, C. A Ackernley, T. Adeva, B. Adinolfi, M. Afsharnia, H. Aidala, C. A Aiola, S. Ajaltouni, Z. Akar, S. Albrecht, J. Alessio, F. Alexander, M. Albero, A. A Aliouche, Z. Alkhazov, G. Cartelle, P. A Amato, S. Amhis, Y. An, L. |
| author_sort | Aaij, R. |
| collection | MIT |
| description | Abstract
A branching fraction measurement of the
$${{B} ^0} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} $$
B
0
→
D
s
+
π
-
decay is presented using proton–proton collision data collected with the LHCb experiment, corresponding to an integrated luminosity of
$$5.0\,\text {fb} ^{-1} $$
5.0
fb
-
1
. The branching fraction is found to be
$${\mathcal {B}} ({{B} ^0} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} ) =(19.4 \pm $$
B
(
B
0
→
D
s
+
π
-
)
=
(
19.4
±
$$1.8\pm 1.3 \pm 1.2)\times 10^{-6}$$
1.8
±
1.3
±
1.2
)
×
10
-
6
, where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the
$${{B} ^0} {\rightarrow }{{D} ^-} {{\pi } ^+} $$
B
0
→
D
-
π
+
,
$${{D} ^+_{s}} {\rightarrow }{{K} ^+} {{K} ^-} {{\pi } ^+} $$
D
s
+
→
K
+
K
-
π
+
and
$${{D} ^-} {\rightarrow }{{K} ^+} {{\pi } ^-} {{\pi } ^-} $$
D
-
→
K
+
π
-
π
-
branching fractions. This is the most precise single measurement of this quantity to date. As this decay proceeds through a single amplitude involving a
$$b{\rightarrow }u$$
b
→
u
charged-current transition, the result provides information on non-factorisable strong interaction effects and the magnitude of the Cabibbo–Kobayashi–Maskawa matrix element
$$V_{ub}$$
V
ub
. Additionally, the collision energy dependence of the hadronisation-fraction ratio
$$f_s/f_d$$
f
s
/
f
d
is measured through
$${{\overline{B}} {}^0_{s}} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} $$
B
¯
s
0
→
D
s
+
π
-
and
$${{B} ^0} {\rightarrow }{{D} ^-} {{\pi } ^+} $$
B
0
→
D
-
π
+
decays. |
| first_indexed | 2024-09-23T13:03:05Z |
| format | Article |
| id | mit-1721.1/136764 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:03:05Z |
| publishDate | 2021 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1367642023-12-19T21:42:34Z Measurement of the branching fraction of the $${{B} ^0} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} $$ B 0 → D s + π - decay Aaij, R. Beteta, C. A Ackernley, T. Adeva, B. Adinolfi, M. Afsharnia, H. Aidala, C. A Aiola, S. Ajaltouni, Z. Akar, S. Albrecht, J. Alessio, F. Alexander, M. Albero, A. A Aliouche, Z. Alkhazov, G. Cartelle, P. A Amato, S. Amhis, Y. An, L. Massachusetts Institute of Technology. Department of Physics Abstract A branching fraction measurement of the $${{B} ^0} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} $$ B 0 → D s + π - decay is presented using proton–proton collision data collected with the LHCb experiment, corresponding to an integrated luminosity of $$5.0\,\text {fb} ^{-1} $$ 5.0 fb - 1 . The branching fraction is found to be $${\mathcal {B}} ({{B} ^0} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} ) =(19.4 \pm $$ B ( B 0 → D s + π - ) = ( 19.4 ± $$1.8\pm 1.3 \pm 1.2)\times 10^{-6}$$ 1.8 ± 1.3 ± 1.2 ) × 10 - 6 , where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the $${{B} ^0} {\rightarrow }{{D} ^-} {{\pi } ^+} $$ B 0 → D - π + , $${{D} ^+_{s}} {\rightarrow }{{K} ^+} {{K} ^-} {{\pi } ^+} $$ D s + → K + K - π + and $${{D} ^-} {\rightarrow }{{K} ^+} {{\pi } ^-} {{\pi } ^-} $$ D - → K + π - π - branching fractions. This is the most precise single measurement of this quantity to date. As this decay proceeds through a single amplitude involving a $$b{\rightarrow }u$$ b → u charged-current transition, the result provides information on non-factorisable strong interaction effects and the magnitude of the Cabibbo–Kobayashi–Maskawa matrix element $$V_{ub}$$ V ub . Additionally, the collision energy dependence of the hadronisation-fraction ratio $$f_s/f_d$$ f s / f d is measured through $${{\overline{B}} {}^0_{s}} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} $$ B ¯ s 0 → D s + π - and $${{B} ^0} {\rightarrow }{{D} ^-} {{\pi } ^+} $$ B 0 → D - π + decays. 2021-11-01T14:33:11Z 2021-11-01T14:33:11Z 2021-04-12 2021-04-18T03:36:46Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/136764 The European Physical Journal C. 2021 Apr 12;81(4):314 PUBLISHER_CC en https://doi.org/10.1140/epjc/s10052-020-08790-2 Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ CERN for the benefit of the LHCb collaboration application/pdf Springer Berlin Heidelberg Springer Berlin Heidelberg |
| spellingShingle | Aaij, R. Beteta, C. A Ackernley, T. Adeva, B. Adinolfi, M. Afsharnia, H. Aidala, C. A Aiola, S. Ajaltouni, Z. Akar, S. Albrecht, J. Alessio, F. Alexander, M. Albero, A. A Aliouche, Z. Alkhazov, G. Cartelle, P. A Amato, S. Amhis, Y. An, L. Measurement of the branching fraction of the $${{B} ^0} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} $$ B 0 → D s + π - decay |
| title | Measurement of the branching fraction of the $${{B} ^0} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} $$ B 0 → D s + π - decay |
| title_full | Measurement of the branching fraction of the $${{B} ^0} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} $$ B 0 → D s + π - decay |
| title_fullStr | Measurement of the branching fraction of the $${{B} ^0} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} $$ B 0 → D s + π - decay |
| title_full_unstemmed | Measurement of the branching fraction of the $${{B} ^0} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} $$ B 0 → D s + π - decay |
| title_short | Measurement of the branching fraction of the $${{B} ^0} {\rightarrow }{{D} ^+_{s}} {{\pi } ^-} $$ B 0 → D s + π - decay |
| title_sort | measurement of the branching fraction of the b 0 rightarrow d s pi b 0 d s π decay |
| url | https://hdl.handle.net/1721.1/136764 |
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