Observation of $B_s \to J/\psi f^\prime_2(1525)$ in $J/\psi K^+K^-$ final states

Aaij, R.; Abellan Beteta, C.; Adeva, B.; Adinolfi, M.; Adrover, C.; Affolder, A.; Ajaltouni, Z.; Albrecht, J.; Alessio, F.; Alexander, M.

doi:10.1103/PhysRevLett.108.151801

Observation of $B_s \to J/\psi f^\prime_2(1525)$ in $J/\psi K^+K^-$ final states

LHCb

Collaboration

Dec, 2011

8 pages

Published in:

Phys.Rev.Lett. 108 (2012) 151801

e-Print:

1112.4695 [hep-ex]

DOI:

10.1103/PhysRevLett.108.151801

PDG:

{{\mathit B}_{{{s}}}^{0}}

\rightarrow

{{\mathit J / \psi}{(1S)}}{{\mathit f}_{{{2}}}^{\,'}{(1525)}}

Report number:

CERN-PH-EP-2011-212,
LHCB-PAPER-2011-026

Experiments:

CERN-LHC-LHCb

View in:

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reference search33 citations

Citations per year

Abstract:

In this Letter the decay

\overline{B}^0_s \to J/\psi K^+ K^-

is investigated. Although the

J/\psi \phi

channel is well known, final states at higher

K^+K^-

masses have not previously been studied. In the

K^+K^-

mass spectrum we observe a significant signal in the

f'_2(1525)

region as well as a non-resonant component. The ratio of the rate in a

K^+K^-

mass window of

\pm 125

MeV around the

f'_2

relative to that in the

J/\psi \phi

decay, where

\phi \to K^+K^-

, is

R=(19.4 \pm 1.8 \pm 1.0)

%. Our sample consists of

0.16

fb

^{-1}

collected with the LHCb detector using 7 TeV

pp

collisions.

Note:

7 pages, 5 figures, v2 many revisions, submitted to PRL

14.40.Be
13.25.Hw
14.40.Nd
LHC
CP violation
B decays
p p: interaction
anti-B/s0: hadronic decay
J/psi(3100): leptonic decay
K+ K-: mass spectrum

References(15)

Figures(5)

Observation of $B_s \to J/\psi f^\prime_2(1525)$ in $J/\psi K^+K^-$ final states

LHCb

Collaboration

•

R. Aaij
(
- NIKHEF, Amsterdam
)

et al.

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•
e-Print:
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•
DOI:
- 10.1103/PhysRevLett.108.151801

Measurement of the CP violating phase $\phi_s$ in $\bar{B}^0_s \to J/\psi f_0(980)$

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Measurement of the CP-violating phase $\phi_s$ in the decay $B^0_s\to J/\psi \phi$

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Observation of Bs→J/ψf2′(1525)B_s \to J/\psi f^\prime_2(1525)Bs​→J/ψf2′​(1525) in J/ψK+K−J/\psi K^+K^-J/ψK+K− final states

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Observation of $B_s \to J/\psi f^\prime_2(1525)$ in $J/\psi K^+K^-$ final states