Title
Study of the Bc+ → J/ψDs+ and Bc+ →J/ψD*s+ decays with the ATLAS detector
Date Issued
01 January 2016
Access level
open access
Resource Type
journal article
Author(s)
Aad G.
Abbott B.
Abdallah J.
Abdinov O.
Aben R.
Abolins M.
AbouZeid O.S.
Abramowicz H.
Abreu H.
Abreu R.
Abulaiti Y.
Acharya B.S.
Adamczyk L.
Adams D.L.
Adelman J.
Adomeit S.
Adye T.
Affolder A.A.
Agatonovic-Jovin T.
Aguilar-Saavedra J.A.
Ahlen S.P.
Ahmadov F.
Aielli G.
Akerstedt H.
Åkesson T.P.A.
Akimoto G.
Akimov A.V.
Alberghi G.L.
Albert J.
Albrand S.
Alconada Verzini M.J.
Aleksa M.
Aleksandrov I.N.
Alexa C.
Alexander G.
Alexopoulos T.
Alhroob M.
Alimonti G.
Alio L.
Alison J.
Alkire S.P.
Allbrooke B.M.M.
Allport P.P.
Aloisio A.
Alonso A.
Alonso F.
Alpigiani C.
Altheimer A.
Alvarez Gonzalez B.
Álvarez Piqueras D.
Alviggi M.G.
Amadio B.T.
Amako K.
Amaral Coutinho Y.
Amelung C.
Amidei D.
Amor Dos Santos S.P.
Amorim A.
Amoroso S.
Amram N.
Amundsen G.
Anastopoulos C.
Ancu L.S.
Andari N.
Andeen T.
Anders C.F.
Anders G.
Anders J.K.
Anderson K.J.
Andreazza A.
Andrei V.
Angelidakis S.
Angelozzi I.
Anger P.
Angerami A.
Anghinolfi F.
Anisenkov A.V.
Anjos N.
Annovi A.
Antonelli M.
Antonov A.
Antos J.
Anulli F.
Aoki M.
Aperio Bella L.
Arabidze G.
Arai Y.
Araque J.P.
Arce A.T.H.
Arduh F.A.
Arguin J.F.
Argyropoulos S.
Arik M.
Armbruster A.J.
Arnaez O.
Arnal V.
Arnold H.
Arratia M.
Arslan O.
Artamonov A.
Publisher(s)
Springer
Abstract
The decays (Formula presented.) and (Formula presented.) are studied with the ATLAS detector at the LHC using a dataset corresponding to integrated luminosities of 4.9 and 20.6 fb-1 of pp collisions collected at centre-of-mass energies (Formula presented.) TeV and 8 TeV, respectively. Signal candidates are identified through (Formula presented.) and (Formula presented.) decays. With a two-dimensional likelihood fit involving the (Formula presented.) reconstructed invariant mass and an angle between the (Formula presented.) candidate momenta in the muon pair rest frame, the yields of (Formula presented.) and (Formula presented.), and the transverse polarisation fraction in (Formula presented.) decay are measured. The transverse polarisation fraction is determined to be (Formula presented.) = 0.38 \pm 0.23 \pm 0.07(Formula presented.), and the derived ratio of the branching fractions of the two modes is (Formula presented.), where the first error is statistical and the second is systematic. Finally, a sample of (Formula presented.) decays is used to derive the ratios of branching fractions (Formula presented.) and (Formula presented.) = 10.4 \pm 3.1 \pm 1.5 \pm 0.6(Formula presented.), where the third error corresponds to the uncertainty of the branching fraction of (Formula presented.) decay. The available theoretical predictions are generally consistent with the measurement.
Start page
1
End page
24
Volume
76
Issue
1
Language
English
OCDE Knowledge area
Física atómica, molecular y química
Scopus EID
2-s2.0-84953865617
Source
European Physical Journal C
ISSN of the container
14346044
Sponsor(s)
We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; EPLANET, ERC and NSRF, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT and NSRF, Greece; RGC, Hong Kong SAR, China; ISF, MINERVA, GIF, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; MNiSW and NCN, Poland; GRICES and FCT, Portugal; MNE/IFA, Romania; MES of Russia and NRC KI, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Leverhulme Trust, United Kingdom; DOE and NSF, United States of America. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN and the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK) and BNL (USA) and in the Tier-2 facilities worldwide.
Sources of information:
Directorio de Producción Científica
Scopus