Study of Two-Body $e^+e^- \to B_s^{(*)}\bar{B}_s^{(*)}$ Production in the Energy Range from 10.77 to 11.02 GeV

Abdesselam, A.; Adachi, I.; Adamczyk, K.; Aihara, H.; Al Said, S.; Arinstein, K.; Arita, Y.; Asner, D.M.; Aso, T.; Atmacan, H.

Study of Two-Body $e^+e^- \to B_s^{()}\bar{B}_s^{()}$ Production in the Energy Range from 10.77 to 11.02 GeV

Sep 27, 2016

20 pages

e-Print:

1609.08749 [hep-ex]

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Abstract: (arXiv)

We report results on the studies of the

e^+e^-\to B_s^{(*)}\bar{B}_s^{(*)}

processes. The results are based on a

121.4

fb

^{-1}

data sample collected with the Belle detector at the center-of-mass energy near the

\Upsilon(10860)

peak and

16.4

fb

^{-1}

of data collected at 19 energy points in the range from 10.77 to 11.02 GeV. We observe a clear

e^+e^-\to\Upsilon(10860)\to B_s^{(*)}\bar{B}_s^{(*)}

signal, with no statistically significant signal of

e^+e^-\to \Upsilon(11020)\to B_s^{(*)}\bar{B}_s^{(*)}

. The relative production ratio of

B_s^*\bar{B}_s^*

,

B_s\bar{B}_s^{*}

, and

B_s\bar{B}_s

final states at

\sqrt{s}=10.866

GeV is measured to be

7:

0.856\pm0.106(stat.)\pm0.053(syst.):

0.645\pm0.094(stat.)^{+0.030}_{-0.033}(syst.)

. An angular analysis of the

B_s^*\bar{B}_s^*

final state produced at the

\Upsilon(10860)

peak is also performed.

Note:

22 page, 6 figures

electron positron: annihilation
electron positron: colliding beams
Upsilon(10870): electroproduction
Upsilon(11020): electroproduction
B/s0: pair production
B/s0: excited state
energy dependence
KEK-B
BELLE
experimental results

References(15)

Figures(38)

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Study of Two-Body e+e−→Bs(∗)Bˉs(∗)e^+e^- \to B_s^{(*)}\bar{B}_s^{(*)}e+e−→Bs(∗)​Bˉs(∗)​ Production in the Energy Range from 10.77 to 11.02 GeV

Citations per year

Study of Two-Body $e^+e^- \to B_s^{()}\bar{B}_s^{()}$ Production in the Energy Range from 10.77 to 11.02 GeV