ANALYSIS OF HADRONIC EVENTS

DONG Bao-Zhong

Chinese Physics C> 1987, Vol. 11> Issue(5) : 596-602

ANALYSIS OF HADRONIC EVENTS

DONG Bao-Zhong ^,

Institute of High Energy Physics, Academia Sinica, Beijing

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Abstract：
In this paper I summarize some results obtained from analyses of hadronic final state events. The analyzed data sample comes from Mark-J collaboration and covers an energy range from √S=12GeV to √S =46.78GeV. The integrated luminosity is 128.06Pb^－1. We can search for production of open top quarks and toponium by measuring the total hadronic crossection R =3.85±0.02±0.12 was measured in the above mentioned energy range. It is consistent with R≈3.9 as expected from QCD for five different quark flavors. We search for the narrow bound states of the toponium from 39.79GeV to 46.78GeV. The most prominent resonance signal is at a c.m. energy √S=45.12±0.04GeV and results in an upper limit of B_h.Γ_ee≤3.00keV(95% C.L.).

References

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K. G. Chetyrkin et al., Phys. Lett., 85B(1979), 227.M. Dine and 3. Sapierstein, Phys. Lett., 43(1979), 668.W. Celmaster and R. Gonsalves, Phys. Lett, 44(1980), 560.[2] R. Budny, Phys. Lett., 55B(1975), 227.J . Ellis and M. K. Gaillard, "Physics With Very High Energy e e Colliding Beams", CERN 76-18(21).[3] 3. D. Jackson and D. L. Scharre, Nucl. Insrrum. Meth., B128(1975), 13.[4] M. Krammer et al., DESY 80/25(1980).[5] J. P. Leveille. Proc. Z Theory, Ithaca, N. Y. 1981, p241.S. Pakvasa et al., Phys. Rev., D20(1979), 2862.

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DONG Bao-Zhong. ANALYSIS OF HADRONIC EVENTS[J]. Chinese Physics C, 1987, 11(5): 596-602.

DONG Bao-Zhong. ANALYSIS OF HADRONIC EVENTS[J]. Chinese Physics C, 1987, 11(5): 596-602. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

ANALYSIS OF HADRONIC EVENTS

DONG Bao-Zhong ^,

Corresponding author: DONG Bao-Zhong,

Institute of High Energy Physics, Academia Sinica, Beijing

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1987-10-05

Abstract: In this paper I summarize some results obtained from analyses of hadronic final state events. The analyzed data sample comes from Mark-J collaboration and covers an energy range from √S=12GeV to √S =46.78GeV. The integrated luminosity is 128.06Pb^－1. We can search for production of open top quarks and toponium by measuring the total hadronic crossection R =3.85±0.02±0.12 was measured in the above mentioned energy range. It is consistent with R≈3.9 as expected from QCD for five different quark flavors. We search for the narrow bound states of the toponium from 39.79GeV to 46.78GeV. The most prominent resonance signal is at a c.m. energy √S=45.12±0.04GeV and results in an upper limit of B_h.Γ_ee≤3.00keV(95% C.L.).