Medium modifications of the pion-pion interaction: A search for double pionic fusion in 14N+d-→ 16O+2 π reactions

M. Andersson; Chr Bargholtz; J. Blomquist; K. Fransson; E. Fumero; L. Holmberg; K. Lindh; L. Mårtensson; P. E. Tegnér; K. Wilhelmsen Rolander

doi:10.1103/PhysRevC.64.038201

Medium modifications of the pion-pion interaction: A search for double pionic fusion in ¹⁴N+d-→ ¹⁶O+2 π reactions

M. Andersson^*
, Chr Bargholtz
, J. Blomquist
, K. Fransson
, E. Fumero
, L. Holmberg
, K. Lindh
, L. Mårtensson
, P. E. Tegnér
, K. Wilhelmsen Rolander

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Double pion production in the reaction ¹⁴N+d → ¹⁶O* + 2 π has been investigated 99 MeV above the 2 π⁰ threshold in the center-of-mass frame by recoil detection. Upper limits (2 standard deviations) to the differential cross sections for producing ¹⁶O in a particle-stable state and pion pairs in the invariant mass range of 270 to 310 MeV/c², dσr/dΩ(0°)_c.m. < 1.7 nb/sr and dσ/dΩ(180°)_c.m. < 1.3 nb/sr, were obtained. For invariant masses above 310 MeV/c² an upper limit to the cross section of 7 nb was obtained, assuming a constant production matrix element.

Original language	English
Article number	038201
Pages (from-to)	382011-382014
Number of pages	4
Journal	Physical Review C
Volume	64
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.64.038201
State	Published - Sep 2001
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1103/PhysRevC.64.038201

Cite this

Andersson, M., Bargholtz, C., Blomquist, J., Fransson, K., Fumero, E., Holmberg, L., Lindh, K., Mårtensson, L., Tegnér, P. E., & Wilhelmsen Rolander, K. (2001). Medium modifications of the pion-pion interaction: A search for double pionic fusion in ¹⁴N+d-→ ¹⁶O+2 π reactions. Physical Review C, 64(3), 382011-382014. Article 038201. https://doi.org/10.1103/PhysRevC.64.038201

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title = "Medium modifications of the pion-pion interaction: A search for double pionic fusion in 14N+d-→ 16O+2 π reactions",

abstract = "Double pion production in the reaction 14N+d → 16O* + 2 π has been investigated 99 MeV above the 2 π0 threshold in the center-of-mass frame by recoil detection. Upper limits (2 standard deviations) to the differential cross sections for producing 16O in a particle-stable state and pion pairs in the invariant mass range of 270 to 310 MeV/c2, dσr/dΩ(0°)c.m. < 1.7 nb/sr and dσ/dΩ(180°)c.m. < 1.3 nb/sr, were obtained. For invariant masses above 310 MeV/c2 an upper limit to the cross section of 7 nb was obtained, assuming a constant production matrix element.",

author = "M. Andersson and Chr Bargholtz and J. Blomquist and K. Fransson and E. Fumero and L. Holmberg and K. Lindh and L. M{\aa}rtensson and Tegn{\'e}r, \{P. E.\} and \{Wilhelmsen Rolander\}, K.",

year = "2001",

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Andersson, M, Bargholtz, C, Blomquist, J, Fransson, K, Fumero, E, Holmberg, L, Lindh, K, Mårtensson, L, Tegnér, PE & Wilhelmsen Rolander, K 2001, 'Medium modifications of the pion-pion interaction: A search for double pionic fusion in ¹⁴N+d-→ ¹⁶O+2 π reactions', Physical Review C, vol. 64, no. 3, 038201, pp. 382011-382014. https://doi.org/10.1103/PhysRevC.64.038201

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T2 - A search for double pionic fusion in 14N+d-→ 16O+2 π reactions

AU - Andersson, M.

AU - Bargholtz, Chr

AU - Blomquist, J.

AU - Fransson, K.

AU - Fumero, E.

AU - Holmberg, L.

AU - Lindh, K.

AU - Mårtensson, L.

AU - Tegnér, P. E.

AU - Wilhelmsen Rolander, K.

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N2 - Double pion production in the reaction 14N+d → 16O* + 2 π has been investigated 99 MeV above the 2 π0 threshold in the center-of-mass frame by recoil detection. Upper limits (2 standard deviations) to the differential cross sections for producing 16O in a particle-stable state and pion pairs in the invariant mass range of 270 to 310 MeV/c2, dσr/dΩ(0°)c.m. < 1.7 nb/sr and dσ/dΩ(180°)c.m. < 1.3 nb/sr, were obtained. For invariant masses above 310 MeV/c2 an upper limit to the cross section of 7 nb was obtained, assuming a constant production matrix element.

AB - Double pion production in the reaction 14N+d → 16O* + 2 π has been investigated 99 MeV above the 2 π0 threshold in the center-of-mass frame by recoil detection. Upper limits (2 standard deviations) to the differential cross sections for producing 16O in a particle-stable state and pion pairs in the invariant mass range of 270 to 310 MeV/c2, dσr/dΩ(0°)c.m. < 1.7 nb/sr and dσ/dΩ(180°)c.m. < 1.3 nb/sr, were obtained. For invariant masses above 310 MeV/c2 an upper limit to the cross section of 7 nb was obtained, assuming a constant production matrix element.

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