Precision measurement of D meson mass differences

Abstract

Using three- and four-body decays of D mesons produced in semileptonic b-hadron decays, precision measurements of D meson mass differences are made together with a measurement of the D 0 mass. The measurements are based on a dataset corresponding to an integrated luminosity of 1.0 fb−1 collected in pp collisions at 7 TeV. Using the decay D 0K + K K π +, the D 0 mass is measured to be

$ M\left( {{D^0}} \right)={{{1864.75\pm 0.15\left( {\mathrm{stat}} \right)\pm 0.11\left( {\mathrm{syst}} \right)\mathrm{MeV}}} \left/ {{{c^2}}} \right.}. $

The mass differences

\( \begin{array}{*{20}{c}} {{{{M\left( {{D^{+}}} \right)-M\left( {{D^0}} \right)=4.76\pm 0.12\left( {\mathrm{stat}} \right)\pm 0.07\left( {\mathrm{syst}} \right)\mathrm{MeV}}} \left/ {{{c^2}}} \right.},} \hfill \\ {{{{M\left( {{D^s}} \right)-M\left( {{D^{+}}} \right)=98.68\pm 0.03\left( {\mathrm{stat}} \right)\pm 0.04\left( {\mathrm{syst}} \right)\mathrm{MeV}}} \left/ {{{c^2}}} \right.}} \hfill \\ \end{array} \)

are measured using the D 0K + K π + π and \( D_{(s)}^{+}\to {K^{+}}{K^{-}}{\pi^{+}} \) modes.

References

  1. [1]

    BaBar collaboration, B. Aubert et al., Measurement of the Mass Difference M(B 0 ) - M(B + ), Phys. Rev. D 78 (2008) 011103 [arXiv:0805.0497] [INSPIRE].

    ADS  Google Scholar 

  2. [2]

    CDF collaboration, D. Acosta et al., Measurement of b hadron masses in exclusive J/ψ decays with the CDF detector, Phys. Rev. Lett. 96 (2006) 202001 [hep-ex/0508022] [INSPIRE].

    ADS  Article  Google Scholar 

  3. [3]

    LHCb collaboration, Measurement of b-hadron masses, Phys. Lett. B 708 (2012) 241 [arXiv:1112.4896] [INSPIRE].

    ADS  Google Scholar 

  4. [4]

    Particle Data Group collaboration, J. Beringer et al., Review of Particle Physics (RPP), Phys. Rev. D 86 (2012) 010001 [INSPIRE].

    ADS  Google Scholar 

  5. [5]

    CLEO collaboration, C. Cawlfield et al., A Precision Determination of the D 0 Mass, Phys. Rev. Lett. 98 (2007) 092002 [hep-ex/0701016] [INSPIRE].

    ADS  Article  Google Scholar 

  6. [6]

    KEDR collaboration, V. Anashin et al., Measurement of D 0 and D + meson masses with the KEDR Detector, Phys. Lett. B 686 (2010) 84 [arXiv:0909.5545] [INSPIRE].

    ADS  Google Scholar 

  7. [7]

    R. Schindler, M. Alam, A. Boyarski, M. Breidenbach, D. Burke et al., Measurements of the Properties of D Meson Decays, Phys. Rev. D 24 (1981) 78 [INSPIRE].

    ADS  Google Scholar 

  8. [8]

    I. Peruzzi, M. Piccolo, G. Feldman, P. Lecomte, V. Vuillemin et al., Study of D Mesons Produced in the Decay of the ψ(3772), Phys. Rev. Lett. 39 (1977) 1301 [INSPIRE].

    ADS  Article  Google Scholar 

  9. [9]

    CDF collaboration, D. Acosta et al., Measurement of the mass difference \( m\left( {D_s^{+}} \right) \)m(D +) at CDF II, Phys. Rev. D 68 (2003) 072004 [hep-ex/0310043] [INSPIRE].

    ADS  Google Scholar 

  10. [10]

    BaBar collaboration, B. Aubert et al., Measurement of \( D_s^{+} \) and \( D_s^{*+ } \) production in B meson decays and from continuum e + e annihilation at \( \sqrt{s}=10.6 \) GeV, Phys. Rev. D 65 (2002) 091104 [hep-ex/0201041] [INSPIRE].

    ADS  Google Scholar 

  11. [11]

    CLEO collaboration, D.N. Brown et al., Precision measurement of the \( D_{(s)}^{*+ }-D_{(s)}^{+} \) mass difference, Phys. Rev. D 50 (1994) 1884 [hep-ph/9403327] [INSPIRE].

    ADS  Google Scholar 

  12. [12]

    CLEO collaboration, W. Chen et al., Measurement of D s decay modes, Phys. Lett. B 226 (1989) 192 [INSPIRE].

    ADS  Google Scholar 

  13. [13]

    J. Anjos, J. Appel, A. Bean, S.B. Bracker, T. Browder et al., Measurement of \( D_X^{\pm } \) Decays and Cabibbo Suppressed D ± Decays, Phys. Rev. Lett. 60 (1988) 897 [INSPIRE].

    ADS  Article  Google Scholar 

  14. [14]

    LHCb collaboration, Observation of \( {{{B_c^{+}\to J}} \left/ {{\psi D_s^{+}}} \right.} \) and \( {{{B_c^{+}\to J}} \left/ {{\psi D_s^{*+ }}} \right.} \) decays, arXiv:1304.4530 [INSPIRE].

  15. [15]

    Belle collaboration, S. Choi et al., Observation of a narrow charmonium - like state in exclusive B ± → K ± π + π J/ψ decays, Phys. Rev. Lett. 91 (2003) 262001 [hep-ex/0309032] [INSPIRE].

    ADS  Article  Google Scholar 

  16. [16]

    CDF collaboration, D. Acosta et al., Observation of the narrow state X(3872) → J/ψπ + π in \( \overline{p}p \) collisions at \( \sqrt{s}=1.96 \) TeV, Phys. Rev. Lett. 93 (2004) 072001 [hep-ex/0312021] [INSPIRE].

    ADS  Article  Google Scholar 

  17. [17]

    D0 collaboration, V. Abazov et al., Observation and properties of the X(3872) decaying to J/ψπ + π in \( p\overline{p} \) collisions at \( \sqrt{s}=1.96 \) TeV, Phys. Rev. Lett. 93 (2004) 162002 [hep-ex/0405004] [INSPIRE].

    ADS  Article  Google Scholar 

  18. [18]

    BaBar collaboration, B. Aubert et al., Study of the B → J/ψK π + π decay and measurement of the B → X(3872)K branching fraction, Phys. Rev. D 71 (2005) 071103 [hep-ex/0406022] [INSPIRE].

    ADS  Google Scholar 

  19. [19]

    LHCb collaboration, Observation of X(3872) production in pp collisions at \( \sqrt{s}=7 \) TeV, Eur. Phys. J. C 72 (2012) 1972 [arXiv:1112.5310] [INSPIRE].

    Google Scholar 

  20. [20]

    CMS collaboration, Measurement of the X(3872) production cross section via decays to J/ψπ + π in pp collisions at \( \sqrt{s}=7 \) TeV, JHEP 04 (2013) 154 [arXiv:1302.3968] [INSPIRE].

    ADS  Google Scholar 

  21. [21]

    LHCb collaboration, Determination of the X(3872) meson quantum numbers, Phys. Rev. Lett. 110 (2013) 222001 [arXiv:1302.6269] [INSPIRE].

    Article  Google Scholar 

  22. [22]

    L. Maiani, F. Piccinini, A. Polosa and V. Riquer, Diquark-antidiquarks with hidden or open charm and the nature of X(3872), Phys. Rev. D 71 (2005) 014028 [hep-ph/0412098] [INSPIRE].

    ADS  Google Scholar 

  23. [23]

    N.A. Tornqvist, Isospin breaking of the narrow charmonium state of Belle at 3872 MeV as a deuson, Phys. Lett. B 590 (2004) 209 [hep-ph/0402237] [INSPIRE].

    ADS  Google Scholar 

  24. [24]

    T. Sjöstrand, S. Mrenna and P.Z. Skands, PYTHIA 6.4 Physics and Manual, JHEP 05 (2006) 026 [hep-ph/0603175] [INSPIRE].

    ADS  Article  Google Scholar 

  25. [25]

    I. Belyaev et al., Handling of the generation of primary events in Gauss, the LHCb simulation framework, Nuclear Science Symposium Conference Record (NSS/MIC) IEEE (2010) 1155.

  26. [26]

    D. Lange, The EvtGen particle decay simulation package, Nucl. Instrum. Meth. A 462 (2001) 152 [INSPIRE].

    ADS  Google Scholar 

  27. [27]

    P. Golonka and Z. Was, PHOTOS Monte Carlo: A Precision tool for QED corrections in Z and W decays, Eur. Phys. J. C 45 (2006) 97 [hep-ph/0506026] [INSPIRE].

    ADS  Article  Google Scholar 

  28. [28]

    GEANT4 collaboration, J. Allison et al., Geant4 developments and applications, IEEE Trans. Nucl. Sci. 53 (2006) 270.

    ADS  Article  Google Scholar 

  29. [29]

    GEANT4 collaboration, S. Agostinelli et al., GEANT4: A Simulation toolkit, Nucl. Instrum. Meth. A 506 (2003) 250 [INSPIRE].

    ADS  Google Scholar 

  30. [30]

    M. Clemencic et al., The LHCb simulation application, Gauss : design, evolution and experience, J. Phys. Conf. Ser. 331 (2011) 032023 [INSPIRE].

    ADS  Article  Google Scholar 

  31. [31]

    LHCb collaboration, The LHCb Detector at the LHC, 2008 JINST 3 S08005 [INSPIRE].

  32. [32]

    R. Aaij, J. Albrecht, F. Alessio, S. Amato, E. Aslanides et al., The LHCb Trigger and its Performance in 2011, 2013 JINST 8 P04022 [arXiv:1211.3055] [INSPIRE].

  33. [33]

    LHCb collaboration, Measurement of the \( \Lambda_b^0,\Xi_b^{-} \) and \( \Omega_b^{-} \) baryon masses, Phys. Rev. Lett. 110 (2013) 182001 [arXiv:1302.1072] [INSPIRE].

    Article  Google Scholar 

  34. [34]

    T. Skwarnicki, A study of the radiative cascade transitions between the \( \varUpsilon \) -prime and \( \varUpsilon \) resonances, Ph.D. Thesis, Institute of Nuclear Physics, Krakow (1986) [INSPIRE].

    Google Scholar 

  35. [35]

    LHCb collaboration, Prompt \( K_s^0 \) production in pp collisions at \( \sqrt{s}=0.9 \) TeV, Phys. Lett. B 693 (2010) 69 [arXiv:1008.3105] [INSPIRE].

    ADS  Google Scholar 

  36. [36]

    LHCb collaboration, Precision measurement of the \( B_s^0-\overline{B}_s^0 \) oscillation frequency with the decay \( B_s^0\to D_s^{-}{\pi^{+}} \), New J. Phys. 15 (2013) 053021 [arXiv:1304.4741] [INSPIRE].

    Article  Google Scholar 

  37. [37]

    M. Pivk and F.R. Le Diberder, SPlot: A Statistical tool to unfold data distributions, Nucl. Instrum. Meth. A 555 (2005) 356 [physics/0402083] [INSPIRE].

    ADS  Google Scholar 

Download references

Author information

Affiliations

Authors