Enhanced Out-of-Plane Emission of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="italic">K</mi></mrow><mrow><mo>+</mo></mrow></msup></mrow></math> Mesons Observed in <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>Au</mi><mi></mi><mo>+</mo><mi></mi><mi>Au</mi></math> Collisions at <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>1</mn><mi mathvariant="italic">A</mi></math> GeV

KaoS Collaboration; Y. Shin; W. Ahner; R. Barth; P. Beckerle; D. Brill; M. Cieślak; M. Dȩbowski; E. Grosse; P. Koczoń; B. Kohlmeyer; M. Mang; D. Miśkowiec; C. Müntz; H. Oeschler; F. Pühlhofer; E. Schwab; R. Schicker; P. Senger; J. Speer; H. Ströbele; C. Sturm; K. Völkel; A. Wagner; W. Waluś

doi:10.1103/PhysRevLett.81.1576

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Enhanced Out-of-Plane Emission of $K^{+}$ Mesons Observed in $Au + Au$ Collisions at $1 A$ GeV

Y. Shin³, W. Ahner¹, R. Barth¹, P. Beckerle³, D. Brill³, M. Cieślak⁵, M. Dȩbowski⁵, E. Grosse^6,7, P. Koczoń¹ et al. (KaoS Collaboration)

P. Koczoń¹, B. Kohlmeyer⁴, M. Mang¹, D. Miśkowiec¹, C. Müntz², H. Oeschler², F. Pühlhofer⁴, E. Schwab¹, R. Schicker¹, P. Senger¹, J. Speer⁴, H. Ströbele³, C. Sturm², K. Völkel⁴, A. Wagner^2,*, and W. Waluś⁵ (KaoS Collaboration)

¹Gesellschaft für Schwerionenforschung, D-64220 Darmstadt, Germany
²Technische Universität Darmstadt, D-64289 Darmstadt, Germany
³Johann Wolfgang Goethe Universität, D-60325 Frankfurt am Main, Germany
⁴Phillips Universität, D-35037 Marburg, Germany
⁵Jagiellonian University, PL-30-059 Kraków, Poland
⁶Forschungszentrum Rossendorf, D-01314 Dresden, Germany
⁷and Technische Universität Dresden, Dresden, Germany

^*Present address: NSCL Michigan State University, East Lansing, MI 48824-1321.

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Phys. Rev. Lett. 81, 1576 – Published 24 August, 1998

DOI: https://doi.org/10.1103/PhysRevLett.81.1576

Abstract

The azimuthal angular distribution of $K^{+}$ mesons has been measured in $Au + Au$ collisions at $1 A GeV$ . In peripheral and semicentral collisions, $K^{+}$ mesons are emitted preferentially perpendicular to the reaction plane. The strength of the azimuthal anisotropy of $K^{+}$ emission is comparable to the one of pions. No in-plane flow was found for $K^{+}$ mesons near projectile and target rapidity.

References (24)

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[c2] G. Brown, Nucl. Phys. A567, 937 (1994).

[c3] T. Waas , Phys. Lett. B 279, 34 (1996).

[c4] A. Schröter , Z. Phys. A 350, 101 (1994)

[c5] R. Barth , Phys. Rev. Lett. 78, 4007 (1997).

[c6] G. Q. Li, C. M. Ko, and X. S. Fang, Phys. Lett. B 329, 149 (1994).

[c7] W. Cassing , Nucl. Phys. A614, 415 (1997).

[c8] J. Ritman , Z. Phys. A 352, 355 (1995).

[c9] G. Q. Li , Phys. Rev. Lett. 74, 235 (1995).

[c10] H. Gutbrod , Phys. Rev. C 42, 640 (1990).

[c11] Y. Leifels , Phys. Rev. Lett. 71, 963 (1993).

[c12] D. Brill , Z. Phys. A 355, 61 (1996).

[c13] H. Stöcker , Phys. Rev. C 25, 1873 (1982).

[c14] D. Brill , Phys. Rev. Lett. 71, 336 (1993).

[c15] L. B. Venema , Phys. Rev. Lett. 71, 835 (1993).

[c16] D. Brill , Z. Phys. A 357, 207 (1997).

[c17] S. A. Bass , Phys. Rev. Lett. 71, 1144 (1993).

[c18] P. Senger , Nucl. Instrum. Methods Phys. Res., Sect. A 327, 393 (1993).

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[c22] Z. Wang and A. Faessler (private communication).

[c23] J. C. Kintner , Phys. Rev. Lett. 78, 4165 (1997).

[c24] S. A. Bass , Phys. Rev. C 50, 2167 (1994).

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Enhanced Out-of-Plane Emission of $K^{+}$ Mesons Observed in $Au + Au$ Collisions at $1 A$ GeV

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Enhanced Out-of-Plane Emission of K+ Mesons Observed in Au+Au Collisions at 1A GeV

Abstract

References (24)

Enhanced Out-of-Plane Emission of $K^{+}$ Mesons Observed in $Au + Au$ Collisions at $1 A$ GeV