Measuring K$^0_{\rm S}$K$^{\rm{\pm}}$ interactions using pp collisions at $\sqrt{s}=7$ TeV

Acharya, Shreyasi; Torales - Acosta, Fernando; Adamova, Dagmar; Adler, Alexander; Adolfsson, Jonatan; Aggarwal, Madan Mohan; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Neelima; Ahammed, Zubayer

doi:10.1016/j.physletb.2018.12.033

Measuring K $^0_{\rm S}$ K $^{\rm{\pm}}$ interactions using pp collisions at $\sqrt{s}=7$ TeV

ALICE

Collaboration

Sep 21, 2018

13 pages

Published in:

Phys.Lett.B 790 (2019) 22-34

Published: Mar 10, 2019

e-Print:

1809.07899 [nucl-ex]

DOI:

10.1016/j.physletb.2018.12.033 (publication)

Report number:

CERN-EP-2018-234

Experiments:

CERN-LHC-ALICE

View in:

datasets

reference search22 citations

Citations per year

Abstract: (Elsevier)

We present the first measurements of femtoscopic correlations between the KS0 and K± particles in pp collisions at s=7 TeV measured by the ALICE experiment. The observed femtoscopic correlations are consistent with final-state interactions proceeding solely via the a0(980) resonance. The extracted kaon source radius and correlation strength parameters for KS0K− are found to be equal within the experimental uncertainties to those for KS0K+ . Results of the present study are compared with those from identical-kaon femtoscopic studies also performed with pp collisions at s=7 TeV by ALICE and with a KS0K± measurement in Pb–Pb collisions at sNN=2.76 TeV. Combined with the Pb–Pb results, our pp analysis is found to be compatible with the interpretation of the a0(980) having a tetraquark structure instead of that of a diquark.

Note:

21 pages, 6 captioned figures, 2 tables, authors from page 16, published version, figures at http://alice-publications.web.cern.ch/node/4662 •
Submitted to Phys.Lett.

K K: interaction
p p: scattering
heavy ion: scattering
correlation
ALICE
final-state interaction
tetraquark
structure
a0(980)
experimental results

References(22)

Figures(6)

[2]

Measuring K $^0_{\rm S}$ K $^{\rm \pm}$ interactions using Pb-Pb collisions at ${\sqrt{s_{\rm NN}}=2.76}$ TeV

ALICE

Collaboration

•

Shreyasi Acharya
(
- Calcutta, VECC
)

et al.

- Phys.Lett.B 774 (2017) 64-77
•
e-Print:
- 1705.04929
•
DOI:
- 10.1016/j.physletb.2017.09.009

[3]

Neutral kaon interferometry in Au+Au collisions at s(NN)**(1/2) = 200-GeV

STAR

Collaboration

•

B.I. Abelev
(
- Yale U.
)

et al.

- Phys.Rev.C 74 (2006) 054902
•
e-Print:
- nucl-ex/0608012
•
DOI:
- 10.1103/PhysRevC.74.054902

[4]

$K^0_s-K^0_s$ correlations in $pp$ collisions at $\sqrt{s}=7$ TeV from the LHC ALICE experiment

ALICE

Collaboration

•

Betty Abelev
(
- LLNL, Livermore
)

et al.

- Phys.Lett.B 717 (2012) 151-161
•
e-Print:
- 1206.2056
•
DOI:
- 10.1016/j.physletb.2012.09.013

[5]

Charged kaon femtoscopic correlations in $pp$ collisions at $\sqrt{s}=7$ TeV

ALICE

Collaboration

•

B. Abelev
(
- LLNL, Livermore
)

et al.

- Phys.Rev.D 87 (2013) 5, 052016
•
e-Print:
- 1212.5958
•
DOI:
- 10.1103/PhysRevD.87.052016

[6]

One-dimensional pion, kaon, and proton femtoscopy in Pb-Pb collisions at $\sqrt{s_{\rm {NN}}}$ =2.76 TeV

ALICE

Collaboration

•

Jaroslav Adam
(
- Prague, Tech. U.
)

et al.

- Phys.Rev.C 92 (2015) 5, 054908
•
e-Print:
- 1506.07884
•
DOI:
- 10.1103/PhysRevC.92.054908

[7]

The New analysis of the KLOE data on the phi ---> eta pi0 gamma decay

- Phys.Rev.D 68 (2003) 014006
•
e-Print:
- hep-ph/0212153
•
DOI:
- 10.1103/PhysRevD.68.014006

[8]

Spectroscopy of tetraquark states

Elena Santopinto
(
- INFN, Genoa and
- Genoa U.
)
,
Giuseppe Galata
(
- INFN, Genoa and
- Genoa U.
)

- Phys.Rev.C 75 (2007) 045206
•
e-Print:
- hep-ph/0605333
•
DOI:
- 10.1103/PhysRevC.75.045206

[9]

Multi-Quark Hadrons. 1. The Phenomenology of (2 Quark 2 anti-Quark) Mesons

Robert L. Jaffe
(
- SLAC and
- MIT, LNS
)

- Phys.Rev.D 15 (1977) 267,
- In *Lichtenberg, D. B. ( Ed.), Rosen, S. P. ( Ed.): Developments In The Quark Theory Of Hadrons, Vol. 1*, 431-444. ( Phys. Rev. D15 ( 1977) 267-280)
•
DOI:
- 10.1103/PhysRevD.15.267