Observation of Directed Flow of Hypernuclei <math display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">H</mi></mrow><mprescripts/><mrow><mi mathvariant="normal">Λ</mi></mrow><mrow><mn>3</mn></mrow></mmultiscripts></mrow></math> and <math display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">H</mi></mrow><mprescripts/><mrow><mi mathvariant="normal">Λ</mi></mrow><mrow><mn>4</mn></mrow></mmultiscripts></mrow></math> in <math display="inline"><mrow><msqrt><mrow><msub><mrow><mi>s</mi></mrow><mrow><mi>NN</mi></mrow></msub></mrow></msqrt><mo>=</mo><mn>3</mn><mtext> </mtext><mtext> </mtext><mi>GeV</mi></mrow></math> <math display="inline"><mrow><mi>Au</mi><mo>+</mo><mi>Au</mi></mrow></math> Collisions at RHIC

Aboona, Bassam; Adam, Jaroslav; Adams, Joseph; Agakishiev, Geydar; Dedovich, Tatiana; Aggarwal, Ishu; Aggarwal, Madan; Ahammed, Zubayer; Aitbaev, Alisher; Alekseev, Igor

doi:10.1103/PhysRevLett.130.212301

Observation of Directed Flow of Hypernuclei ${}_{Λ}^{3}H$ and ${}_{Λ}^{4}H$ in $\sqrt{s_{NN}} = 3 GeV$ $Au + Au$ Collisions at RHIC

STAR

Collaboration

•

Bassam Aboona
(
- Texas A-M
)

Nov 30, 2022

11 pages

Published in:

Phys.Rev.Lett. 130 (2023) 21, 212301

Published: May 24, 2023

e-Print:

2211.16981 [nucl-ex]

DOI:

10.1103/PhysRevLett.130.212301 (publication)

Experiments:

BNL-RHIC-STAR

View in:

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reference search21 citations

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Abstract: (APS)

We report here the first observation of directed flow (

v_{1}

) of the hypernuclei

{}_{Λ}^{3}H

and

{}_{Λ}^{4}H

in mid-central

Au + Au

collisions at

\sqrt{s_{NN}} = 3 GeV

at RHIC. These data are taken as part of the beam energy scan program carried out by the STAR experiment. From

165 \times 10^{6}

events in 5%–40% centrality, about 8400

{}_{Λ}^{3}H

and 5200

{}_{Λ}^{4}H

candidates are reconstructed through two- and three-body decay channels. We observe that these hypernuclei exhibit significant directed flow. Comparing to that of light nuclei, it is found that the midrapidity

v_{1}

slopes of

{}_{Λ}^{3}H

and

{}_{Λ}^{4}H

follow baryon number scaling, implying that the coalescence is the dominant mechanism for these hypernuclei production in the 3 GeV

Au + Au

collisions.

Note:

5pages, 4 figures. Supplemental material: 6 pages, 5 figures

hypernucleus: production
heavy ion: scattering
beam: energy
flow
Brookhaven RHIC Coll
slope
STAR
coalescence
scaling
light nucleus

References(53)

Figures(10)

[1]

Hyperon–nucleon three-body forces and strangeness in neutron stars

Dominik Gerstung
(
- Munich, Tech. U.
)
,
Norbert Kaiser
(
- Munich, Tech. U.
)
,
Wolfram Weise
(
- Munich, Tech. U.
)

- Eur.Phys.J.A 56 (2020) 6, 175
•
e-Print:
- 2001.10563
•
DOI:
- 10.1140/epja/s10050-020-00180-2

[2]

Hyperon Puzzle: Hints from Quantum Monte Carlo Calculations

Diego Lonardoni
(
- Argonne
)
,
Alessandro Lovato
(
- Argonne
)
,
Stefano Gandolfi
(
- Los Alamos Natl. Lab., Theor. Div.
)
,
Francesco Pederiva
(
- INFN, Trento and
- Trento U.
)

- Phys.Rev.Lett. 114 (2015) 9, 092301
•
e-Print:
- 1407.4448
•
DOI:
- 10.1103/PhysRevLett.114.092301

[3]

Improved $\Lambda p$ Elastic Scattering Cross Sections Between 0.9 and 2.0 GeV/c and Connections to the Neutron Star Equation of State

CLAS

Collaboration

•

J. Rowley
(
- Ohio U.
)

et al.

- Phys.Rev.Lett. 127 (2021) 27, 272303
•
e-Print:
- 2108.03134
•
DOI:
- 10.1103/PhysRevLett.127.272303

[4]

Measurement of the differential cross sections of the $\Sigma^-p$ elastic scattering in momentum range 470 to 850 MeV/c

J-PARC E40

Collaboration

•

K. Miwa
(
- Tohoku U.
)

et al.

- Phys.Rev.C 104 (2021) 4, 045204
•
e-Print:
- 2104.13608
•
DOI:
- 10.1103/PhysRevC.104.045204

[5]

Precise measurement of differential cross sections of the $\Sigma^-p \to \Lambda n$ reaction in momentum range 470-650 MeV $/c$

J-PARC E40

Collaboration

•

K. Miwa
(
- Tohoku U.
)

et al.

- Phys.Rev.Lett. 128 (2022) 7, 072501
•
e-Print:
- 2111.14277
•
DOI:
- 10.1103/PhysRevLett.128.072501

[6]

Strangeness in nuclear physics

- Rev.Mod.Phys. 88 (2016) 3, 035004
•
e-Print:
- 1605.00557
•
DOI:
- 10.1103/RevModPhys.88.035004

[7]

Spectroscopy of Lambda hypernuclei

O. Hashimoto
(
- Tohoku U.
)
,
H. Tamura
(
- Tohoku U.
)

- Prog.Part.Nucl.Phys. 57 (2006) 564-653
•
DOI:
- 10.1016/j.ppnp.2005.07.001

[8]

Experiments with the High Resolution Kaon Spectrometer at JLab Hall C and the new spectroscopy of $^{12}_{\Lambda}B$ hypernuclei

HKS

Collaboration

•

L. Tang
(
- Hampton U. and
- Jefferson Lab
)

et al.

- Phys.Rev.C 90 (2014) 3, 034320
•
e-Print:
- 1406.2353
•
DOI:
- 10.1103/PhysRevC.90.034320

[9]

Observation of an Antimatter Hypernucleus

STAR

Collaboration

•

B.I. Abelev
(
- Illinois U., Chicago
)

et al.

- Science 328 (2010) 58-62
•
e-Print:
- 1003.2030
•
DOI:
- 10.1126/science.1183980

[10]

$^3_\Lambda\mathrm{H}$ and $^3_{\bar{\Lambda}}\mathrm{\overline{H}}$ lifetime measurement in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}} =$ 5.02 TeV via two-body decay

ALICE

Collaboration

•

Shreyasi Acharya
(
- Calcutta, VECC
)

et al.

- Phys.Lett.B 797 (2019) 134905
•
e-Print:
- 1907.06906
•
DOI:
- 10.1016/j.physletb.2019.134905

[11]

Measurement of the $^3_{\Lambda}$ H lifetime in Au+Au collisions at the BNL Relativistic Heavy Ion Collider

STAR

Collaboration

•

L. Adamczyk

et al.

- Phys.Rev.C 97 (2018) 5, 054909
•
e-Print:
- 1710.00436
•
DOI:
- 10.1103/PhysRevC.97.054909

[12]

Measurements of $H_\Lambda^3$ and $H_\Lambda^4$ Lifetimes and Yields in Au+Au Collisions in the High Baryon Density Region

STAR

Collaboration

•

Mohamed Abdallah
(
- American U., Cairo
)

et al.

- Phys.Rev.Lett. 128 (2022) 20, 202301
•
e-Print:
- 2110.09513
•
DOI:
- 10.1103/PhysRevLett.128.202301

[13]

New directions in hypernuclear physics

Takehiko R. Saito
(
- Wako, RIKEN and
- Darmstadt, GSI and
- Lanzhou U. (main)
)
,
Wenbou Dou
(
- Wako, RIKEN and
- Saitama U.
)
,
Vasyl Drozd
(
- Darmstadt, GSI and
- Groningen, KVI
)
,
Hiroyuki Ekawa
(
- Wako, RIKEN
)
,
Samuel Escrig
(
- Madrid, Inst. Estructura Materia
)

et al.

- Nature Rev.Phys. 3 (2021) 12, 803-813
•
DOI:
- 10.1038/s42254-021-00371-w

[14]

Antinuclei in Heavy-Ion Collisions

Jinhui Chen
(
- SINAP, Shanghai
)
,
Declan Keane
(
- Kent State U.
)
,
Yu-Gang Ma
(
- SINAP, Shanghai and
- Beijing, GUCAS
)
,
Aihong Tang
(
- Brookhaven
)
,
Zhangbu Xu
(
- Brookhaven and
- Shandong U.
)

- Phys.Rept. 760 (2018) 1-39
•
e-Print:
- 1808.09619
•
DOI:
- 10.1016/j.physrep.2018.07.002

[15]

Measurement of the mass difference and the binding energy of the hypertriton and antihypertriton

STAR

Collaboration

•

J. Adam
(
- Creighton U.
)

et al.

- Nature Phys. 16 (2020) 4, 409-412
•
e-Print:
- 1904.10520
•
DOI:
- 10.1038/s41567-020-0799-7

[16]

Production of light nuclei, hypernuclei and their antiparticles in relativistic nuclear collisions

A. Andronic
(
- Darmstadt, GSI
)
,
P. Braun-Munzinger
(
- Darmstadt, GSI and
- Darmstadt, EMMI and
- Darmstadt, Tech. U. and
- Frankfurt U., FIAS
)
,
J. Stachel
(
- Heidelberg U.
)
,
H. Stocker
(
- Darmstadt, GSI and
- Frankfurt U., FIAS
)

- Phys.Lett.B 697 (2011) 203-207
•
e-Print:
- 1010.2995
•
DOI:
- 10.1016/j.physletb.2011.01.053

[17]

Hypernuclei, dibaryon and antinuclei production in high energy heavy ion collisions: Thermal production versus Coalescence

J. Steinheimer
(
- LBL, Berkeley and
- Frankfurt U., FIAS
)
,
K. Gudima
(
- Frankfurt U., FIAS and
- IAP, Chisinau
)
,
A. Botvina
(
- Frankfurt U., FIAS and
- Moscow, INR
)
,
I. Mishustin
(
- Frankfurt U., FIAS and
- Kurchatov Inst., Moscow
)
,
M. Bleicher
(
- Frankfurt U., FIAS
)

et al.

- Phys.Lett.B 714 (2012) 85-91
•
e-Print:
- 1203.2547
•
DOI:
- 10.1016/j.physletb.2012.06.069

[18]

Parton-hadron-quantum-molecular dynamics: A novel microscopic $n$ -body transport approach for heavy-ion collisions, dynamical cluster formation, and hypernuclei production

J. Aichelin
(
- SUBATECH, Nantes and
- Frankfurt U., FIAS
)
,
E. Bratkovskaya
(
- Darmstadt, GSI and
- Frankfurt U.
)
,
A. Le Fèvre
(
- Darmstadt, GSI
)
,
V. Kireyeu
(
- Dubna, JINR
)
,
V. Kolesnikov
(
- Dubna, JINR
)

et al.

- Phys.Rev.C 101 (2020) 4, 044905
•
e-Print:
- 1907.03860
•
DOI:
- 10.1103/PhysRevC.101.044905

[19]

Hydrodynamics near the QCD phase transition: Looking for the longest lived fireball

C.M. Hung
(
- SUNY, Stony Brook
)
,
Edward V. Shuryak
(
- SUNY, Stony Brook
)

- Phys.Rev.Lett. 75 (1995) 4003-4006
•
e-Print:
- hep-ph/9412360
•
DOI:
- 10.1103/PhysRevLett.75.4003

[20]

Antiflow of nucleons at the softest point of the EoS

et al.

- Phys.Rev.C 61 (2000) 024909
•
e-Print:
- nucl-th/9908010
•
DOI:
- 10.1103/PhysRevC.61.024909

[21]

Examination of directed flow as a signal for a phase transition in relativistic nuclear collisions

J. Steinheimer
(
- Frankfurt U. and
- Frankfurt U., FIAS and
- Darmstadt, GSI
)
,
J. Auvinen
(
- Frankfurt U. and
- Frankfurt U., FIAS and
- Darmstadt, GSI
)
,
H. Petersen
(
- Darmstadt, GSI and
- Frankfurt U. and
- Frankfurt U., FIAS
)
,
M. Bleicher
(
- Darmstadt, GSI and
- Frankfurt U. and
- Frankfurt U., FIAS
)
,
H. Stöcker
(
- Frankfurt U. and
- Frankfurt U., FIAS and
- Darmstadt, GSI
)

- Phys.Rev.C 89 (2014) 5, 054913
•
e-Print:
- 1402.7236
•
DOI:
- 10.1103/PhysRevC.89.054913

[22]

Examination of directed flow as a signature of the softest point of the equation of state in QCD matter

Yasushi Nara
(
- Akita Intl. U. and
- Frankfurt U., FIAS
)
,
Harri Niemi
(
- Frankfurt U.
)
,
Akira Ohnishi
(
- Kyoto U., Yukawa Inst., Kyoto
)
,
Horst Stöcker
(
- Frankfurt U., FIAS and
- Frankfurt U. and
- Darmstadt, GSI
)

- Phys.Rev.C 94 (2016) 3, 034906
•
e-Print:
- 1601.07692
•
DOI:
- 10.1103/PhysRevC.94.034906

[23]

Beam-Energy Dependence of the Directed Flow of Protons, Antiprotons, and Pions in Au+Au Collisions

STAR

Collaboration

•

L. Adamczyk
(
- AGH-UST, Cracow
)

et al.

- Phys.Rev.Lett. 112 (2014) 16, 162301
•
e-Print:
- 1401.3043
•
DOI:
- 10.1103/PhysRevLett.112.162301

[24]

Beam-Energy Dependence of Directed Flow of $\Lambda$ , $\bar{\Lambda}$ , $K^\pm$ , $K^0_s$ and $\phi$ in Au+Au Collisions

STAR

Collaboration

•

Leszek Adamczyk
(
- AGH-UST, Cracow
)

et al.

- Phys.Rev.Lett. 120 (2018) 6, 062301
•
e-Print:
- 1708.07132
•
DOI:
- 10.1103/PhysRevLett.120.062301

[25]

Beam-energy dependence of the directed flow of deuterons in Au+Au collisions

STAR

Collaboration

•

J. Adam
(
- Brookhaven
)

et al.

- Phys.Rev.C 102 (2020) 4, 044906
•
e-Print:
- 2007.04609
•
DOI:
- 10.1103/PhysRevC.102.044906

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Observation of Directed Flow of Hypernuclei HΛ3 and HΛ4 in sNN=3 GeV Au+Au Collisions at RHIC

Citations per year

Observation of Directed Flow of Hypernuclei ${}_{Λ}^{3}H$ and ${}_{Λ}^{4}H$ in $\sqrt{s_{NN}} = 3 GeV$ $Au + Au$ Collisions at RHIC