Measurement of azimuthal asymmetries in inclusive charged dipion production in $e^+e^-$ annihilations at $\sqrt{s}$ = 3.65 GeV - INSPIRE

DataBETA

Measurement of azimuthal asymmetries in inclusive charged dipion production in $e^+e^-$ annihilations at $\sqrt{s}$ = 3.65 GeV

BESIII

Collaboration

Jul 24, 2015

7 pages

Published in:

Phys.Rev.Lett. 116 (2016) 4, 042001

Published: Jan 27, 2016

e-Print:

1507.06824 [hep-ex]

DOI:

10.1103/PhysRevLett.116.042001

Experiments:

BEPC-BES-III

View in:

ADS Abstract Service

reference search86 citations

Citations per year

Abstract: (APS)

We present a measurement of the azimuthal asymmetries of two charged pions in the inclusive process e+e-→ππX, based on a data set of 62 pb-1 at the center-of-mass energy of 3.65 GeV collected with the BESIII detector. These asymmetries can be attributed to the Collins fragmentation function. We observe a nonzero asymmetry, which increases with increasing pion momentum. As our energy scale is close to that of the existing semi-inclusive deep inelastic scattering experimental data, the measured asymmetries are important inputs for the global analysis of extracting the quark transversity distribution inside the nucleon and are valuable to explore the energy evolution of the spin-dependent fragmentation function.

Note:

7 pages, 5 figures

electron positron: annihilation
electron positron: colliding beams
pi: pair production
pi: momentum
momentum dependence
deep inelastic scattering: semi-inclusive reaction
hadron: transverse momentum
photon: virtual
effect: Collins
asymmetry

References(30)

Figures(5)

[1]

Fragmentation of transversely polarized quarks probed in transverse momentum distributions

John C. Collins
(
- Penn State U.
)

- Nucl.Phys.B 396 (1993) 161-182
•
e-Print:
- hep-ph/9208213
•
DOI:
- 10.1016/0550-3213(93)90262-N

[2]

Production of Dimuons from High-Energy Polarized Proton Proton Collisions

John P. Ralston
(
- Oregon U.
)
,
Davison E. Soper
(
- Oregon U.
)

- Nucl.Phys.B 152 (1979) 109,
- Argonne Symp.1978:559
•
DOI:
- 10.1016/0550-3213(79)90082-8

[3]

Chiral odd parton distributions and polarized Drell-Yan

R.L. Jaffe
(
- MIT, LNS
)
,
Xiang-Dong Ji
(
- MIT, LNS
)

- Phys.Rev.Lett. 67 (1991) 552-555
•
DOI:
- 10.1103/PhysRevLett.67.552

[4]

Chiral odd parton distributions and Drell-Yan processes

R.L. Jaffe
(
- MIT, LNS
)
,
Xiang-Dong Ji
(
- MIT, LNS
)

- Nucl.Phys.B 375 (1992) 527-560
•
DOI:
- 10.1016/0550-3213(92)90110-W

[5]

Single-spin asymmetries in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen target

HERMES

Collaboration

•

A. Airapetian
(
- Michigan U.
)

et al.

- Phys.Rev.Lett. 94 (2005) 012002
•
e-Print:
- hep-ex/0408013
•
DOI:
- 10.1103/PhysRevLett.94.012002

[6]

Effects of transversity in deep-inelastic scattering by polarized protons

HERMES

Collaboration

•

A. Airapetian
(
- Giessen U. and
- Michigan U.
)

et al.

- Phys.Lett.B 693 (2010) 11-16
•
e-Print:
- 1006.4221
•
DOI:
- 10.1016/j.physletb.2010.08.012

[7]

Experimental investigation of transverse spin asymmetries in muon-p SIDIS processes: Collins asymmetries

COMPASS

Collaboration

•

C. Adolph
(
- Erlangen - Nuremberg U.
)

et al.

- Phys.Lett.B 717 (2012) 376-382
•
e-Print:
- 1205.5121
•
DOI:
- 10.1016/j.physletb.2012.09.055

[8]

Single Spin Asymmetries in Charged Pion Production from Semi-Inclusive Deep Inelastic Scattering on a Transversely Polarized $^3$ He Target

Jefferson Lab Hall A

Collaboration

•

X. Qian
(
- Duke U. and
- Caltech
)

et al.

- Phys.Rev.Lett. 107 (2011) 072003
•
e-Print:
- 1106.0363
•
DOI:
- 10.1103/PhysRevLett.107.072003

[9]

Asymmetries in polarized hadron production in e+ e- annihilation up to order 1/Q

Daniel Boer
(
- NIKHEF, Amsterdam
)
,
R. Jakob
(
- NIKHEF, Amsterdam
)
,
P.J. Mulders
(
- NIKHEF, Amsterdam and
- Vrije U., Amsterdam
)

- Nucl.Phys.B 504 (1997) 345-380
•
e-Print:
- hep-ph/9702281
•
DOI:
- 10.1016/S0550-3213(97)00456-2

[10]

Measurement of azimuthal asymmetries in inclusive production of hadron pairs in e+ e- annihilation at Belle

Belle

Collaboration

•

Kazuo Abe

et al.

- Phys.Rev.Lett. 96 (2006) 232002
•
e-Print:
- hep-ex/0507063
•
DOI:
- 10.1103/PhysRevLett.96.232002

[12]

Measurement of Azimuthal Asymmetries in Inclusive Production of Hadron Pairs in e+e- Annihilation at s**(1/2) = 10.58-GeV

Belle

Collaboration

•

R. Seidl
(
- Illinois U., Urbana and
- RIKEN BNL
)

et al.

- Phys.Rev.D 78 (2008) 032011,
- Phys.Rev.D 86 (2012) 039905 (erratum)
•
e-Print:
- 0805.2975
•
DOI:
- 10.1103/PhysRevD.78.032011

[12]

Measurement of Azimuthal Asymmetries in Inclusive Production of Hadron Pairs in e+e- Annihilation at s**(1/2) = 10.58-GeV

Belle

Collaboration

•

R. Seidl
(
- Illinois U., Urbana and
- RIKEN BNL
)

et al.

- Phys.Rev.D 78 (2008) 032011,
- Phys.Rev.D 86 (2012) 039905 (erratum)
•
e-Print:
- 0805.2975
•
DOI:
- 10.1103/PhysRevD.78.032011

[13]

Measurement of Collins asymmetries in inclusive production of charged pion pairs in $e^+e^-$ annihilation at BABAR

BaBar

Collaboration

•

J.P. Lees
(
- Annecy, LAPP
)

et al.

- Phys.Rev.D 90 (2014) 5, 052003
•
e-Print:
- 1309.5278
•
DOI:
- 10.1103/PhysRevD.90.052003

[14]

Gluon-exchange in spin-dependent fragmentation

A. Metz
(
- Ruhr U., Bochum
)

- Phys.Lett.B 549 (2002) 139-145
•
e-Print:
- hep-ph/0209054
•
DOI:
- 10.1016/S0370-2693(02)02899-X

[15]

Simultaneous extraction of transversity and Collins functions from new SIDIS and e+e- data

M. Anselmino
(
- Turin U. and
- INFN, Turin
)
,
M. Boglione
(
- Turin U. and
- INFN, Turin
)
,
U. D'Alesio
(
- Cagliari U. and
- INFN, Cagliari
)
,
S. Melis
(
- Turin U. and
- INFN, Turin
)
,
F. Murgia
(
- INFN, Cagliari
)

et al.

- Phys.Rev.D 87 (2013) 094019
•
e-Print:
- 1303.3822
•
DOI:
- 10.1103/PhysRevD.87.094019

[16]

Extracting the transversity distributions from single-hadron and dihadron production

Anna Martin
(
- Trieste U. and
- INFN, Trieste
)
,
Franco Bradamante
(
- Trieste U. and
- INFN, Trieste
)
,
Vincenzo Barone
(
- Piemonte Orientale U., Alessandria
)

- Phys.Rev.D 91 (2015) 1, 014034
•
e-Print:
- 1412.5946
•
DOI:
- 10.1103/PhysRevD.91.014034

[17]

Nucleon tensor charge from Collins azimuthal asymmetry measurements

- Phys.Rev.D 91 (2015) 071501
•
e-Print:
- 1410.4877
•
DOI:
- 10.1103/PhysRevD.91.071501

[18]

Energy Evolution for the Sivers Asymmetries in Hard Processes

Peng Sun
(
- LBNL, NSD
)
,
Feng Yuan
(
- LBNL, NSD
)

- Phys.Rev.D 88 (2013) 034016
•
e-Print:
- 1304.5037
•
DOI:
- 10.1103/PhysRevD.88.034016

[19]

Extraction of Quark Transversity Distribution and Collins Fragmentation Functions with QCD Evolution

Zhong-Bo Kang
(
- Los Alamos Natl. Lab., Theor. Div.
)
,
Alexei Prokudin
(
- Jefferson Lab
)
,
Peng Sun
(
- LBNL, NSD
)
,
Feng Yuan
(
- LBNL, NSD
)

- Phys.Rev.D 93 (2016) 1, 014009
•
e-Print:
- 1505.05589
•
DOI:
- 10.1103/PhysRevD.93.014009

[20]

F. Yuan
,
J. Zhou

- Phys.Rev.L 103 (2009) 052001

[21]

QCD evolution of naive-time-reversal-odd fragmentation functions

Zhong-Bo Kang
(
- Brookhaven
)

- Phys.Rev.D 83 (2011) 036006
•
e-Print:
- 1012.3419
•
DOI:
- 10.1103/PhysRevD.83.036006

[22]

Contribution of twist-3 fragmentation function to single transverse-spin asymmetry in semi-inclusive deep inelastic scattering

Koichi Kanazawa
(
- Niigata U., Grad. Sch. Sci. Tech. and
- Temple U.
)
,
Yuji Koike
(
- Niigata U.
)

- Phys.Rev.D 88 (2013) 074022
•
e-Print:
- 1309.1215
•
DOI:
- 10.1103/PhysRevD.88.074022

[23]

Design and Construction of the BESIII Detector

BESIII

Collaboration

•

M. Ablikim
(
- Beijing, Inst. High Energy Phys.
)

et al.

- Nucl.Instrum.Meth.A 614 (2010) 345-399
•
e-Print:
- 0911.4960
•
DOI:
- 10.1016/j.nima.2009.12.050

[24]

C. Zhang

- Sci.China G 53 (2010) 2084

[25]

GEANT4 - A Simulation Toolkit

GEANT4

Collaboration

•

S. Agostinelli
(
- Genoa U.
)

et al.

- Nucl.Instrum.Meth.A 506 (2003) 250-303
•
DOI:
- 10.1016/S0168-9002(03)01368-8

1-25 of 30
1
2
25 / page