Precise measurements of the properties of the B[subscript 1](5721)[superscript 0,+] and B[* over 2](5747)[superscript 0,+] states and observation of B[superscript +,0]π[superscript −,+] mass structures
Name
Aaij-2015-Precise measurements.pdf
Size
1.3 MB
Format
Adobe PDF
Checksum (MD5)
3dd479b852620fa7037786ec95ec581d
Author(s)
Counts, Ian Thomas Hunt
Williams, Michael
Ilten, Philip J
Date Issued
April 2015
Journal
Journal of High Energy Physics
Publisher
Springer-Verlag
Citation
Aaij, R., B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, et al. “Precise Measurements of the Properties of the B[subscript 1](5721)[superscript 0,+] and B[* over 2](5747)[superscript 0,+] States and Observation of B[superscript +,0]π[superscript −,+] Mass Structures.” J. High Energ. Phys. 2015, no. 4 (April 2015). © 2015 CERN, for the benefit of the LHCb Collaboration
Version
Final published version
Abstract
Invariant mass distributions of B[superscript +]π[superscript −] and B[superscript 0]π[superscript +] combinations are investigated in order to study excited B mesons. The analysis is based on a data sample corresponding to 3.0 fb[superscript −1] of pp collision data, recorded by the LHCb detector at centre-of-mass energies of 7 and 8 TeV. Precise measurements of the masses and widths of the B[subscript 1](5721)[superscript 0,+] and B[superscript 2](5747)[superscript 0,+] states are reported. Clear enhancements, particularly prominent at high pion transverse momentum, are seen over background in the mass range 5850-6000 MeV in both B[superscript +]π[superscript −] and B[superscript 0]π[superscript +] combinations. The structures are consistent with the presence of four excited B mesons, labelled B[subscript J](5840)[superscript 0,+] and B[subscript J](5960)[superscript 0,+], whose masses and widths are obtained under different hypotheses for their quantum numbers.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/jhep04(2015)024
