Study of $$ {B}_c^{+}\to {\chi}_c{\pi}^{+} $$ decays
A study of B c + → χ c...
| Main Authors: | , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Springer Science and Business Media LLC
2024
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/1721.1/153641 |
| _version_ | 1811080413401055232 |
|---|---|
| author | Aaij, R. Abdelmotteleb, A. S. W. Abellan Beteta, C. Abudinén, F. Ackernley, T. Adefisoye, A. A. Adeva, B. Adinolfi, M. Adlarson, P. Agapopoulou, C. Aidala, C. A. Ajaltouni, Z. Akar, S. Akiba, K. Albicocco, P. Albrecht, J. Alessio, F. |
| author_facet | Aaij, R. Abdelmotteleb, A. S. W. Abellan Beteta, C. Abudinén, F. Ackernley, T. Adefisoye, A. A. Adeva, B. Adinolfi, M. Adlarson, P. Agapopoulou, C. Aidala, C. A. Ajaltouni, Z. Akar, S. Akiba, K. Albicocco, P. Albrecht, J. Alessio, F. |
| author_sort | Aaij, R. |
| collection | MIT |
| description | A study of
B
c
+
→
χ
c
π
+
$$ {B}_c^{+}\to {\chi}_c{\pi}^{+} $$
decays is reported using proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The decay
B
c
+
→
χ
c
2
π
+
$$ {B}_c^{+}\to {\chi}_{c2}{\pi}^{+} $$
is observed for the first time, with a significance exceeding seven standard deviations. The relative branching fraction with respect to the
B
c
+
→
J
/
ψ
π
+
$$ {B}_c^{+}\to J/\psi {\pi}^{+} $$
decay is measured to be
B
B
c
+
→
χ
c
2
π
+
B
B
c
+
→
J
/
ψ
π
+
=
0.37
±
0.06
±
0.02
±
0.01
,
$$ \frac{{\mathcal{B}}_{B_c^{+}\to {\chi}_{c2}{\pi}^{+}}}{{\mathcal{B}}_{B_c^{+}\to J/\psi {\pi}^{+}}}=0.37\pm 0.06\pm 0.02\pm 0.01, $$
where the first uncertainty is statistical, the second is systematic, and the third is due to the knowledge of the χc2 → J/ψγ branching fraction. No significant
B
c
+
→
χ
c
1
π
+
$$ {B}_c^{+}\to {\chi}_{c1}{\pi}^{+} $$
signal is observed and an upper limit for the relative branching fraction for the
B
c
+
→
χ
c
1
π
+
$$ {B}_c^{+}\to {\chi}_{c1}{\pi}^{+} $$
and
B
c
+
→
χ
c
2
π
+
$$ {B}_c^{+}\to {\chi}_{c2}{\pi}^{+} $$
decays of
B
B
c
+
→
χ
c
1
π
+
B
B
c
+
→
χ
c
2
π
+
=
<
0.49
$$ \frac{{\mathcal{B}}_{B_c^{+}\to {\chi}_{c1}{\pi}^{+}}}{{\mathcal{B}}_{B_c^{+}\to {\chi}_{c2}{\pi}^{+}}}=<0.49 $$
is set at the 90% confidence level. |
| first_indexed | 2024-09-23T11:31:15Z |
| format | Article |
| id | mit-1721.1/153641 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:31:15Z |
| publishDate | 2024 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1536412024-03-08T03:40:30Z Study of $$ {B}_c^{+}\to {\chi}_c{\pi}^{+} $$ decays Aaij, R. Abdelmotteleb, A. S. W. Abellan Beteta, C. Abudinén, F. Ackernley, T. Adefisoye, A. A. Adeva, B. Adinolfi, M. Adlarson, P. Agapopoulou, C. Aidala, C. A. Ajaltouni, Z. Akar, S. Akiba, K. Albicocco, P. Albrecht, J. Alessio, F. Nuclear and High Energy Physics A study of B c + → χ c π + $$ {B}_c^{+}\to {\chi}_c{\pi}^{+} $$ decays is reported using proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The decay B c + → χ c 2 π + $$ {B}_c^{+}\to {\chi}_{c2}{\pi}^{+} $$ is observed for the first time, with a significance exceeding seven standard deviations. The relative branching fraction with respect to the B c + → J / ψ π + $$ {B}_c^{+}\to J/\psi {\pi}^{+} $$ decay is measured to be B B c + → χ c 2 π + B B c + → J / ψ π + = 0.37 ± 0.06 ± 0.02 ± 0.01 , $$ \frac{{\mathcal{B}}_{B_c^{+}\to {\chi}_{c2}{\pi}^{+}}}{{\mathcal{B}}_{B_c^{+}\to J/\psi {\pi}^{+}}}=0.37\pm 0.06\pm 0.02\pm 0.01, $$ where the first uncertainty is statistical, the second is systematic, and the third is due to the knowledge of the χc2 → J/ψγ branching fraction. No significant B c + → χ c 1 π + $$ {B}_c^{+}\to {\chi}_{c1}{\pi}^{+} $$ signal is observed and an upper limit for the relative branching fraction for the B c + → χ c 1 π + $$ {B}_c^{+}\to {\chi}_{c1}{\pi}^{+} $$ and B c + → χ c 2 π + $$ {B}_c^{+}\to {\chi}_{c2}{\pi}^{+} $$ decays of B B c + → χ c 1 π + B B c + → χ c 2 π + = < 0.49 $$ \frac{{\mathcal{B}}_{B_c^{+}\to {\chi}_{c1}{\pi}^{+}}}{{\mathcal{B}}_{B_c^{+}\to {\chi}_{c2}{\pi}^{+}}}=<0.49 $$ is set at the 90% confidence level. 2024-03-07T19:29:04Z 2024-03-07T19:29:04Z 2024-02-22 2024-03-03T04:10:37Z Article http://purl.org/eprint/type/JournalArticle 1029-8479 https://hdl.handle.net/1721.1/153641 Journal of High Energy Physics. 2024 Feb 22;2024(2):173 PUBLISHER_CC en 10.1007/jhep02(2024)173 Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ The Author(s) application/pdf Springer Science and Business Media LLC Springer Berlin Heidelberg |
| spellingShingle | Nuclear and High Energy Physics Aaij, R. Abdelmotteleb, A. S. W. Abellan Beteta, C. Abudinén, F. Ackernley, T. Adefisoye, A. A. Adeva, B. Adinolfi, M. Adlarson, P. Agapopoulou, C. Aidala, C. A. Ajaltouni, Z. Akar, S. Akiba, K. Albicocco, P. Albrecht, J. Alessio, F. Study of $$ {B}_c^{+}\to {\chi}_c{\pi}^{+} $$ decays |
| title | Study of $$ {B}_c^{+}\to {\chi}_c{\pi}^{+} $$ decays |
| title_full | Study of $$ {B}_c^{+}\to {\chi}_c{\pi}^{+} $$ decays |
| title_fullStr | Study of $$ {B}_c^{+}\to {\chi}_c{\pi}^{+} $$ decays |
| title_full_unstemmed | Study of $$ {B}_c^{+}\to {\chi}_c{\pi}^{+} $$ decays |
| title_short | Study of $$ {B}_c^{+}\to {\chi}_c{\pi}^{+} $$ decays |
| title_sort | study of b c to chi c pi decays |
| topic | Nuclear and High Energy Physics |
| url | https://hdl.handle.net/1721.1/153641 |
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