Experimental study of chi(b)(2P) ---> pi pi chi(b)(1P) - INSPIRE

DataBETA

Experimental study of chi(b)(2P) ---> pi pi chi(b)(1P)

CLEO

Collaboration

•

C. Cawlfield
(
- Illinois U., Urbana
)

Nov, 2005

14 pages

Published in:

Phys.Rev.D 73 (2006) 012003

e-Print:

hep-ex/0511019 [hep-ex]

DOI:

10.1103/PhysRevD.73.012003

PDG:

{{\mathit \chi}_{{{b1}}}{(2P)}}

\rightarrow

{{\mathit \pi}}{{\mathit \pi}}{{\mathit \chi}_{{{b1}}}{(1P)}}

Report number:

CLNS-05-1937,
CLEO-05-25

Experiments:

CESR-CLEO-III

View in:

ADS Abstract Service

reference search23 citations

Citations per year

Abstract:

We have searched for the di-pion transition chi_b(2P) -> pi pi chi_b(1P) in the CLEO III sample of Upsilon(3S) decays in the exclusive decay chain: Upsilon(3S) -> gamma chi_b(2P), chi_b(2P) -> pi pi chi_b(1P), chi_b(1P) -> gamma Upsilon(1S), Upsilon(1S) -> lepton pairs. Our studies include both pi+ pi- and pi0 pi0, each analyzed both in fully reconstructed events and in events with one pion undetected. We show that the null hypothesis is not substantiated. Under reasonable assumptions, we find the partial decay width to be Gamma[chi_b(2P) -> pi pi chi_b(1P)] = (0.83 +/- 0.22 +/- 0.08 +/- 0.19) keV, with the uncertainties being statistical, internal CLEO systematics, and common systematics from outside sources.

13.25.Gv
electron positron: colliding beams
electron positron: annihilation
Upsilon(10355): electroproduction
Upsilon(10355): radiative decay
chi/b2(10270): hadronic decay
chi/b1(9890): radiative decay
Upsilon(9460): leptonic decay
chi/b2(10270): width
CLEO

References(21)

Figures(0)

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