Observation of the Λb 0→Λφ decay
- R. Aaij,
- C. Abellán Beteta,
- B. Adeva,
- M. Adinolfi,
- Z. Ajaltouni,
- S. Akar
- CERN,
- University of Zurich,
- University of Santiago de Compostela,
- University of Bristol,
- Université Clermont Auvergne,
- CNRS
Research Output:
Contribution to journal
Article
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FWCI
1.53
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Author count
733
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Citations
29
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81
Abstract
© 2016 The Author. The Λb0→Λφ decay is observed using data corresponding to an integrated luminosity of 3.0 fb-1 recorded by the LHCb experiment. The decay proceeds at leading order via a b→sss loop transition and is therefore sensitive to the possible presence of particles beyond the Standard Model. A first observation is reported with a significance of 5.9 standard deviations. The value of the branching fraction is measured to be (5.18±1.04±0.35-0.62+0.67)×10-6, where the first uncertainty is statistical, the second is systematic, and the third is related to external inputs. Triple-product asymmetries are measured to be consistent with zero.
Publication Information
Output type
Research Output:
Contribution to journal
Article
Peer-reviewOriginal language
EnglishPages from-to (Number of pages)
Pages 282-292 (11 pages)Journal (Volume, Issue Number)
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics (Volume 759)Publication milestones
- Published - 10/08/2016
Publication status
Published - 10/08/2016
ISSN
0370-2693Publication IDs
- WOS: 000380409200039
- Scopus: 84973304971
Funding Details
We are grateful for the excellent luminosity and machine conditions provided by our PEP-II colleagues, and for the substantial dedicated effort from the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and kind hospitality. This work is supported by DOE and NSF (USA), NSERC (Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (Netherlands), NFR (Norway), MES (Russia), MINECO (Spain), STFC (United Kingdom), BSF (USA-Israel). Individuals have received support from the Marie Curie EIF (European Union) and the A. P. Sloan Foundation (USA).
The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700 ; National Natural Science Foundation of China (NSFC) under Contracts Nos. 11125525 , 11235011 , 11275266 , 11305180 , 11322544 , 11322544 , 11335008 , 11425524 , 11505010 ; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; the CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts Nos. U1332201 , U1532257 , U1532258 ; CAS under Contracts Nos. KJCX2-YW-N29 , KJCX2-YW-N45 , QYZDJ-SSW-SLH003 ; 100 Talents Program of CAS ; National 1000 Talents Program of China ; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology ; German Research Foundation DFG under Contracts Nos. Collaborative Research Center CRC 1044 , FOR 2359 ; Istituto Nazionale di Fisica Nucleare , Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) under Contract No. 530-4CDP03 ; Ministry of Development of Turkey under Contract No. DPT2006K-120470 ; National Science and Technology fund ; The Swedish Research Council ; U.S. Department of Energy under Contracts Nos. DE-FG02-05ER41374 , DE-SC-0010118 , DE-SC-0010504 , DE-SC-0012069 ; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea under Contract No. R32-2008-000-10155-0 . This paper is also supported by Beijing municipal government under Contract Nos. KM201610017009 , 2015000020124G064 , CIT&TCD201704047 .
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 (The Netherlands); MNiSW and NCN (Poland); MEN/IFA (Romania); MinES and FASO (Russia); MinECo (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); NSF ( USA ). We acknowledge the computing resources that are provided by CERN , IN2P3 (France), KIT and DESY (Germany), INFN (Italy), SURF (The Netherlands), PIC (Spain), GridPP (United Kingdom), RRCKI and Yandex LLC (Russia), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), PL-GRID (Poland) and OSC ( USA ). 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 AvH Foundation (Germany), EPLANET , Marie Sk\u0142odowska-Curie Actions and ERC (European Union), ANR , Labex P2IO and OCEVU, and R\u00E9gion Auvergne-Rh\u00F4ne-Alpes (France), Key Research Program of Frontier Sciences of CAS , CAS PIFI, and the Thousand Talents Program (China), RFBR , RSF and Yandex LLC (Russia), GVA , XuntaGal and GENCAT (Spain), Herchel Smith Fund , the Royal Society , the English-Speaking Union and the Leverhulme Trust (United Kingdom).
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 (The Netherlands) MNiSW and NCN (Poland) MEN/IFA (Romania) MinES and FASO (Russia) MinECo (Spain) SNSF and SER (Switzerland) NASU (Ukraine) STFC (United Kingdom) NSF (USA). We acknowledge the computing resources that are provided by CERN, IN2P3 (France), KIT and DESY (Germany), INFN (Italy), SURF (The Netherlands), PIC (Spain), GridPP (United Kingdom), RRCKI and Yandex LLC (Russia), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), PL-GRID (Poland) and OSC (USA). 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 AvH Foundation (Germany).
This work is supported by DOE and NSF (USA), NSERC (Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (Netherlands), NFR (Norway), MES (Russia), MINECO (Spain), STFC (United Kingdom), BSF (USA-Israel). Individuals have received support from the Marie Curie EIF (European Union) and the A. P. Sloan Foundation (USA)
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); NSFC (China); CNRS/IN2P3 (France); BMBF , DFG and MPG (Germany); INFN (Italy); FOM and NWO (The Netherlands); MNiSW and NCN (Poland); MEN/IFA (Romania); MinES and FANO (Russia); MinECo (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); NSF (USA). We acknowledge the computing resources that are provided by CERN, IN2P3 (France), KIT and DESY (Germany), INFN (Italy), SURF (The Netherlands), PIC (Spain), GridPP (United Kingdom), RRCKI and Yandex LLC (Russia), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), PL-GRID (Poland) and OSC (USA). 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 AvH Foundation (Germany), EPLANET , Marie Sk\u0142odowska-Curie Actions and ERC (European Union), Conseil G\u00E9n\u00E9ral de Haute-Savoie , Labex ENIGMASS and OCEVU , R\u00E9gion Auvergne (France), RFBR and Yandex LLC (Russia), GVA , XuntaGal and GENCAT (Spain), Herchel Smith Fund , The Royal Society , Royal Commission for the Exhibition of 1851 and the Leverhulme Trust (United Kingdom).
FundersFunding numbers
FOM
-National Science and Technology fund
-ANR
-Marie Curie EIF
-IFIN-HH
-MES
-USA-Israel
-Labex
-NASU
-Federal Agency for Scientific Organizations
-CAS
-NCN
-OCEVU
-NSF
-National 1000 Talents Program of China
-IN2P3
-MSCA
-Région Auvergne
-CNRS-IN2P3
-SKLPPC
-FAPERJ
-NWO
-MOST
-Herchel Smith Fund
-Leverhulme Trust
-Royal Commission for the Exhibition of 1851
-PL-GRID
-SURF
-INFN
-NSF
-FINEP
-MINECO
-RUG
-CNRS
-MPG
-BMBF
-CEA
-CNPq
-CAPES
-KIT
-Labex ENIGMASS
-EC
-Région Auvergne-Rhône-Alpes
-DFG
-РФФИ
-MOST
-GSI
-NFR
-BMBF
-OSC
-NSF
-ESU
-Yandex LLC
-CDFW
-RuG
-BSF
-BSF
-GridPP
-MinES
-RRCKI
-RSF
-Alfred P. Sloan Foundation
-SER
-DESY
-NCN
-NSERC (Canada), CEA
-CAS
-Recruitment Program of Global Experts
-PIC
-Royal Society
-SER
-INPAC
-ERC
-EPLANET
-NSFC (China) CNRS/IN2P3
-MNiSW
-GVA
-CERN
-VR
-Alexander von Humboldt-Stiftung
-USA
-Conseil Général de Haute-Savoie
-FOM
--
ST/N000250/1, ST/N000331/1, GRIDPP, 1681016, ST/G005974/1, 1708182, LHCb, ST/L003538/1, ST/N000455/1, ST/N001370/1, ST/K004646/1, ST/N000242/1, ST/H006737/1, ST/K00140X/1, LHCb Upgrades, 1707993, ST/M004058/1, ST/J004332/1, 1641747, ST/N000447/1, ST/K003410/1, 1796908, ST/N000463/1, ST/N000234/1, ST/L003163/1, ST/N000420/1
CCEPP
U1532257, U1532258, KJCX2-YW-N29, KJCX2-YW-N45, QYZDJ-SSW-SLH003, U1332201
CCEPP
--
unidentified
DFG
CRC 1044, FOR 2359
DFG
-Ministry of Development of Turkey
DPT2006K-120470
NRF
R32-2008-000-10155-0
NRF
-Beijing municipal government
CIT&TCD201704047, 2015000020124G064, KM201610017009
USDOE
DE-FG02-05ER41374, DE-SC-0010504, DE-SC-0010118, DE-SC-0012069
USDOE
-NKRDPC
2015CB856700
NKRDPC
-KNAW
530-4CDP03
KNAW
-SNF
166208
SNF
-NSFC
11425524, 11125525, 11322544, 11235011, 11335008, 11505010, 11305180, 11275266
NSFC
-