| Citation: | SUN Jiajia, ZHANG Yujie, XIONG Changet al. S-wave spin singlet bottomonium decay to charm quark pair[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(1): 212-217. doi: 10.13700/j.bh.1001-5965.2018.0267(in Chinese)
|
The decay of S-wave spin singlet bottomonium state to charm quark pair is studied, and the decay of S-wave spin singlet state and triplet bottomonium state to D meson pair is studied. By using the branching ratio of the decay of S-wave spin triplet bottomonium state to D meson measured by the BaBar Collaboration, it is found that the color octet matrix element of the S-wave spin triplet bottomonium state is much smaller than the theoretical prediction, and the theoretical prediction is a factor of 20 times larger than the experimental upper limit. The theoretical predictions of the branching ratio of S-wave spin singlet bottomonium state to charm quark pair can be used to probe the color octet mechanism. The theoretical predictions of the branching ratio of S-wave spin singlet bottomonium state to D meson pair are different from those of other literature. These predictions can be validated by Belle Ⅱ Collaboration to obtain more information about hadronization.
| [1] |
BODWIN G T, BRAATEN E, LEPAGE G P.Rigorous QCD analysis of inclusive annihilation and production of heavy quarkonium[J].Physical Review D, 1995, 51(3):1125-1171. http://d.old.wanfangdata.com.cn/OAPaper/oai_arXiv.org_hep-ph%2f9407339
|
| [2] |
PATRIGNANI C, PEDLAR T K, ROSNER J L.Recent results in bottomonium[J]. Annual Review of Nuclear and Particle Science, 2013, 63(1):21-44. doi: 10.1146/annurev-nucl-102212-170609
|
| [3] |
GAO Y J, ZHANG Y J, CHAO K T.Radiative decays of charmonium into light mesons[J].Chinese Physics Letters, 2006, 23(9):2376-2378 doi: 10.1088/0256-307X/23/9/008
|
| [4] |
SANG W L, CHEN H T, CHEN Y Q.Order-v4 relativistic corrections to Υ inclusive decay into a charm pair[J].Physical Review D, 2012, 86(11):114004. doi: 10.1103/PhysRevD.86.114004
|
| [5] |
FRITZSCH H, STRENG K H.Quarkonium decay into heavy quark flavors[J]. Physics Letters B, 1978, 77(3):299-303. doi: 10.1016/0370-2693(78)90711-6
|
| [6] |
ZHANG Y J, CHAO K T.Upsilon decay to two-charm quark jets as a probe of the color octet mechanism[J].Physical Review D, 2008, 78(9):094017. doi: 10.1103/PhysRevD.78.094017
|
| [7] |
BODWIN G T, BRAATEN E, KANG D, et al.Inclusive charm production in χb decays[J].Physical Review D, 2007, 76(5):054001. doi: 10.1103/PhysRevD.76.054001
|
| [8] |
PATRIGNANI C, AGASHE K, AIELLI G, et al. Review of particle physics[J].Chinese Physics C, 2016, 40:100001. doi: 10.1088/1674-1137/40/10/100001
|
| [9] |
JIA Y.Which hadronic decay modes are good for ηb searching:Double J/ψ or something else [J].Physical Review D, 2008, 78(5):054003. doi: 10.1103/PhysRevD.78.054003
|
| [10] |
MALTONI F, POLOSA A D.Observation potential for ηb at the Tevatron[J].Physical Review D, 2004, 70(5):054014. doi: 10.1103/PhysRevD.70.054014
|
| [11] |
BODWIN G T, LEE J, SINCLAIR D K.Spin correlations and velocity-scaling in color-octet NRQCD matrix elements[J].Physical Review D, 2005, 72(1):014009. http://d.old.wanfangdata.com.cn/OAPaper/oai_arXiv.org_hep-lat%2f0503032
|
| [12] |
SEUSTER R, ABE K, AIHARA H.Charm hadrons from fragmentation and B decays in e+ e- annihilation at
|
| [13] |
ZENAIEV O.Charm production and QCD analysis at HERA and LHC[J].European Physical Journal C, 2017, 77(3):151 doi: 10.1140/epjc/s10052-017-4620-4
|
| [14] |
UGLOV T, ABE K, ABE T.Measurement of the e+ e-→D(*)+D(*)- cross-sections[J].Physical Review D, 2004, 70(7):071101. doi: 10.1103/PhysRevD.70.071101
|
| [15] |
LIU K Y, HE Z G, ZHANG Y J, et al.Understanding the e+ e-→D(*)+D(*)- processes observed by Belle[J].Journal of Physics G, 2010, 37(4):045005. doi: 10.1088/0954-3899/37/4/045005
|
| [16] |
BRODSKY S J, LEPAGE G P. Helicity selection rules and tests of gluon spin in exclusive QCD processes[J].Physical Review D, 1981, 24(11):2848. doi: 10.1103/PhysRevD.24.2848
|
Figures(3)
Copyright © Journal of Beijing University of Aeronautics and Astronautics
Address: Editorial Department of Journal of Beijing University of Aeronautics and Astronautics, 37 Xueyuan Road, Haidian District, Beijing Post Code: 100191 Email: jbuaa@buaa.edu.cn
Supported by:
Beijing Renhe Information Technology Co., Ltd.
DownLoad:
