TY - JOUR
T1 - Amplitude analysis and branching fraction measurement of B+→D∗−Ds+π+ decays
AU - Aaij, R.
AU - Abdelmotteleb, A. S.W.
AU - Abellan Beteta, C.
AU - Abudinén, F.
AU - Ackernley, T.
AU - Adams, J. A.
AU - Adefisoye, A. A.
AU - Adeva, B.
AU - Adinolfi, M.
AU - Adlarson, P.
AU - Agapopoulou, C.
AU - Aidala, C. A.
AU - Ajaltouni, Z.
AU - Akar, S.
AU - Akiba, K.
AU - Albicocco, P.
AU - Albrecht, J.
AU - Alessio, F.
AU - Alexander, M.
AU - Aliouche, Z.
AU - Alvarez Cartelle, P.
AU - Amalric, R.
AU - Amato, S.
AU - Amey, J. L.
AU - Amhis, Y.
AU - An, L.
AU - Anderlini, L.
AU - Andersson, M.
AU - Andreianov, A.
AU - Andreola, P.
AU - Andreotti, M.
AU - Andreou, D.
AU - Anelli, A.
AU - Ao, D.
AU - Archilli, F.
AU - Argenton, M.
AU - Arguedas Cuendis, S.
AU - Artamonov, A.
AU - Artuso, M.
AU - Aslanides, E.
AU - Atzeni, M.
AU - Audurier, B.
AU - Bacher, D.
AU - Bachiller Perea, I.
AU - Bachmann, S.
AU - Bachmayer, M.
AU - Back, J. J.
AU - Baladron Rodriguez, P.
AU - Balagura, V.
AU - Baldini, W.
AU - LHCb collaboration
AU - de Vries, Jacco
AU - da silva Bolognani, Carolina
AU - Cámpora Pérez, Daniel Hugo
AU - Lucio Martinez, Miriam
AU - Merk, Marcel
AU - Nicotra, Davide
AU - Onderwater, Gerco
AU - Pawley, Chris
AU - Vos, Keri
AU - Rabadan Trejo, R.I.
N1 - Funding Information:
We express our gratitude to our colleagues in the CERN accelerator departments for the excellent performance of the LHC. We thank the technical and administrative staff at the LHCb institutes. We acknowledge support from CERN and from the national agencies: CAPES, CNPq, FAPERJ and FINEP (Brazil); MOST and NSFC (China); CNRS/IN2P3 (France); BMBF, DFG and MPG (Germany); INFN (Italy); NWO (Netherlands); MNiSW and NCN (Poland); MCID/IFA (Romania); MICIU and AEI (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); DOE NP and NSF (U.S.A.). We acknowledge the computing resources that are provided by CERN, IN2P3 (France), KIT and DESY (Germany), INFN (Italy), SURF (Netherlands), PIC (Spain), GridPP (United Kingdom), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), and Polish WLCG (Poland). We are indebted to the communities behind the multiple open-source software packages on which we depend. Individual groups or members have received support from ARC and ARDC (Australia); Key Research Program of Frontier Sciences of CAS, CAS PIFI, CAS CCEPP, Fundamental Research Funds for the Central Universities, and Sci. & Tech. Program of Guangzhou (China); Minciencias (Colombia); EPLANET, Marie Sk\u0142odowska-Curie Actions, ERC and NextGenerationEU (European Union); A*MIDEX, ANR, IPhU and Labex P2IO, and R\u00E9gion Auvergne-Rh\u00F4ne-Alpes (France); AvH Foundation (Germany); ICSC (Italy); Severo Ochoa and Mar\u00EDa de Maeztu Units of Excellence, GVA, XuntaGal, GENCAT, InTalent-Inditex and Prog. Atracci\u00F3n Talento CM (Spain); SRC (Sweden); the Leverhulme Trust, the Royal Society and UKRI (United Kingdom).
Publisher Copyright:
© The Author(s) 2024.
PY - 2024/8/1
Y1 - 2024/8/1
N2 - The decays of the B
+ meson to the final state D
∗−D
s
+π
+ are studied in proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb
−1. The ratio of branching fractions of the B
+→D
∗−D
s
+π
+ and B
0→D
∗−D
s
+ decays is measured to be 0.173 ± 0.006 ± 0.010, where the first uncertainty is statistical and the second is systematic. Using partially reconstructed D
s
∗+→D
s
+γ and D
s
+π
0 decays, the ratio of branching fractions between the B
+→D
∗−D
s
∗+π
+ and B
+→D
∗−D
s
+π
+ decays is determined as 1.31 ± 0.07 ± 0.14. An amplitude analysis of the B
+→D
∗−D
s
+π
+ decay is performed for the first time, revealing dominant contributions from known excited charm resonances decaying to the D
*−π
+ final state. No significant evidence of exotic contributions in the D
s
+π
+ or D
∗−D
s
+ channels is found. The fit fraction of the scalar state T
cs¯0
∗2900
++ observed in the B
+→D
−D
s
+π
+ decay is determined to be less than 2.3% at a 90% confidence level.
AB - The decays of the B
+ meson to the final state D
∗−D
s
+π
+ are studied in proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb
−1. The ratio of branching fractions of the B
+→D
∗−D
s
+π
+ and B
0→D
∗−D
s
+ decays is measured to be 0.173 ± 0.006 ± 0.010, where the first uncertainty is statistical and the second is systematic. Using partially reconstructed D
s
∗+→D
s
+γ and D
s
+π
0 decays, the ratio of branching fractions between the B
+→D
∗−D
s
∗+π
+ and B
+→D
∗−D
s
+π
+ decays is determined as 1.31 ± 0.07 ± 0.14. An amplitude analysis of the B
+→D
∗−D
s
+π
+ decay is performed for the first time, revealing dominant contributions from known excited charm resonances decaying to the D
*−π
+ final state. No significant evidence of exotic contributions in the D
s
+π
+ or D
∗−D
s
+ channels is found. The fit fraction of the scalar state T
cs¯0
∗2900
++ observed in the B
+→D
−D
s
+π
+ decay is determined to be less than 2.3% at a 90% confidence level.
KW - Branching fraction
KW - Charm Physics
KW - Hadron-Hadron Scattering
KW - Spectroscopy
U2 - 10.1007/JHEP08(2024)165
DO - 10.1007/JHEP08(2024)165
M3 - Article
SN - 1029-8479
VL - 2024
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 8
M1 - 165
ER -