Observation of an Excited B-c(+/-) Meson State with the ATLAS Detector

A search for excited states of the B-c(+/-) meson is performed using 4.9 fb(-1) of 7 TeV and 19.2 fb(-1) of 8 TeV pp collision data collected by the ATLAS experiment at the LHC. A new state is observed through its hadronic transition to the ground state, with the latter detected in the decayB(c)(+/-) - GT J/psi pi(+/-). The state appears in the m(B-c(+/-)pi(+)pi(-)) - m(B-c(+/-)) - 2m(pi(+/-)) mass difference distribution with a significance of 5.2 standard deviations. The mass of the observed state is 6842 +/- 4 +/- 5 MeV, where the first error is statistical and the second is systematic. The mass and decay of this state are consistent with expectations for the second S-wave state of the B-c(+/-) meson, B-c(+/-)(2S).

Source:
Physical Review Letters, 2014, 113, 21

Projects:

ANPCyT, Argentina, YerPhI, Armenia, ARC, Australia, BMWF, Austria, FWF, Austria, ANAS, Azerbaijan, SSTC, Belarus, CNPq, Brazil, FAPESP, Brazil, NSERC, Canada, NRC, Canada, CFI, Canada, CERN, CONICYT, Chile, CAS, China, MOST, China, NSFC, China, COLCIENCIAS, Colombia, MSMT CR, Czech Republic, MPO CR, Czech Republic, VSC CR, Czech Republic, DNRF, Denmark, DNSRC, Denmark, Lundbeck Foundation, Denmark, EPLANET, European Union, ERC, European Union, NSRF, European Union, IN2P3-CNRS, France, CEA-DSM/IRFU, France, GNSF, Georgia, BMBF, Germany, DFG, Germany, HGF, Germany, MPG, Germany, AvH Foundation, Germany, GSRT, Greece, NSRF, Greece, ISF, Israel, MINERVA, Israel, GIF, Israel, I-CORE, Israel, Benoziyo Center, Israel, INFN, Italy, MEXT, Japan, JSPS, Japan, CNRST, Morocco, FOM, Netherlands, NWO, Netherlands, BRF, Norway, RCN, Norway, MNiSW, Poland, NCN, Poland, GRICES, Portugal, FCT, Portugal, MNE/IFA, Romania, MES of Russia, Russian Federation, ROSATOM, Russian Federation, JINR, MSTD, Serbia, MSSR, Slovakia, ARRS, Slovenia, MIZS, Slovenia, DST/NRF, South Africa, MINECO, Spain, SRC, Sweden, Wallenberg Foundation, Sweden, SER, Switzerland, SNSF, Switzerland, Cantons of Bern and Geneva, Switzerland, NSC, Taiwan, TAEK, Turkey, STFC, United Kingdom, Royal Society, United Kingdom, Leverhulme Trust, United Kingdom, DOE, USA, NSF, USA, ICREA

DOI: 10.1103/PhysRevLett.113.212004

ISSN: 0031-9007; 1079-7114

PubMed: 25479491

WoS: 000345745800002

Scopus: 2-s2.0-84979842280

[ Google Scholar ]



	74
	46

TY  - JOUR
AU  - Aad, G.
AU  - Agatonović-Jovin, Tatjana
AU  - Ćirković, Predrag
AU  - Dimitrievska, A.
AU  - Krstić, Jelena
AU  - Mamužić, Judita
AU  - Marjanovic, M.
AU  - Popovic, D. S.
AU  - Sijacki, Dj.
AU  - Simic, Lj.
AU  - Vranjes, N.
AU  - Vranješ Milosavljević, Marija
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/247
AB  - A search for excited states of the B-c(+/-) meson is performed using 4.9 fb(-1) of 7 TeV and 19.2 fb(-1) of 8 TeV pp collision data collected by the ATLAS experiment at the LHC. A new state is observed through its hadronic transition to the ground state, with the latter detected in the decayB(c)(+/-) - GT J/psi pi(+/-). The state appears in the m(B-c(+/-)pi(+)pi(-)) - m(B-c(+/-)) - 2m(pi(+/-)) mass difference distribution with a significance of 5.2 standard deviations. The mass of the observed state is 6842 +/- 4 +/- 5 MeV, where the first error is statistical and the second is systematic. The mass and decay of this state are consistent with expectations for the second S-wave state of the B-c(+/-) meson, B-c(+/-)(2S).
T2  - Physical Review Letters
T1  - Observation of an Excited B-c(+/-) Meson State with the ATLAS Detector
VL  - 113
IS  - 21
DO  - 10.1103/PhysRevLett.113.212004
ER  -

@article{
author = "Aad, G. and Agatonović-Jovin, Tatjana and Ćirković, Predrag and Dimitrievska, A. and Krstić, Jelena and Mamužić, Judita and Marjanovic, M. and Popovic, D. S. and Sijacki, Dj. and Simic, Lj. and Vranjes, N. and Vranješ Milosavljević, Marija",
year = "2014",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/247",
abstract = "A search for excited states of the B-c(+/-) meson is performed using 4.9 fb(-1) of 7 TeV and 19.2 fb(-1) of 8 TeV pp collision data collected by the ATLAS experiment at the LHC. A new state is observed through its hadronic transition to the ground state, with the latter detected in the decayB(c)(+/-) - GT J/psi pi(+/-). The state appears in the m(B-c(+/-)pi(+)pi(-)) - m(B-c(+/-)) - 2m(pi(+/-)) mass difference distribution with a significance of 5.2 standard deviations. The mass of the observed state is 6842 +/- 4 +/- 5 MeV, where the first error is statistical and the second is systematic. The mass and decay of this state are consistent with expectations for the second S-wave state of the B-c(+/-) meson, B-c(+/-)(2S).",
journal = "Physical Review Letters",
title = "Observation of an Excited B-c(+/-) Meson State with the ATLAS Detector",
volume = "113",
number = "21",
doi = "10.1103/PhysRevLett.113.212004"
}

Aad G, Agatonović-Jovin T, Ćirković P, Dimitrievska A, Krstić J, Mamužić J, Marjanovic M, Popovic DS, Sijacki D, Simic L, Vranjes N, Vranješ Milosavljević M. Observation of an Excited B-c(+/-) Meson State with the ATLAS Detector. Physical Review Letters. 2014;113(21)

Aad, G., Agatonović-Jovin, T., Ćirković, P., Dimitrievska, A., Krstić, J., Mamužić, J., Marjanovic, M., Popovic, D. S., Sijacki, Dj., Simic, Lj., Vranjes, N.,& Vranješ Milosavljević, M. (2014). Observation of an Excited B-c(+/-) Meson State with the ATLAS Detector.
Physical Review Letters, 113(21).
https://doi.org/10.1103/PhysRevLett.113.212004

Aad G., Agatonović-Jovin Tatjana, Ćirković Predrag, Dimitrievska A., Krstić Jelena, Mamužić Judita, Marjanovic M., Popovic D. S., Sijacki Dj., Simic Lj., Vranjes N., Vranješ Milosavljević Marija, "Observation of an Excited B-c(+/-) Meson State with the ATLAS Detector" 113, no. 21 (2014),
https://doi.org/10.1103/PhysRevLett.113.212004 .