Reanalysis of pion pion phase shifts from K -> pi pi decays

Vincenzo Cirigliano; Gerhard Ecker; A. Pich

doi:10.1016/j.physletb.2009.08.027

Reanalysis of pion pion phase shifts from K -> pi pi decays

Vincenzo Cirigliano (Korresp. Autor*in)
, Gerhard Ecker
, A. Pich

Teilchenphysik

Veröffentlichungen: Beitrag in Fachzeitschrift › Artikel › Peer Reviewed

Abstract

We re-investigate the impact of isospin violation for extracting the s -wave ππ scattering phase shift difference δ0(MK)−δ2(MK)δ0(MK)−δ2(MK) from K→ππK→ππ decays. Compared to our previous analysis in 2003, more precise experimental data and improved knowledge of low-energy constants are used. In addition, we employ a more robust data-driven method to obtain the phase shift difference δ0(MK)−δ2(MK)=(52.5±exp0.8±theor2.8)°δ0(MK)−δ2(MK)=(52.5±0.8exp±2.8theor)°.

Originalsprache	Englisch
Seiten (von - bis)	445-448
Seitenumfang	4
Fachzeitschrift	Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
Jahrgang	679
Ausgabenummer	5
DOIs	https://doi.org/10.1016/j.physletb.2009.08.027
Publikationsstatus	Veröffentlicht - 2009

ÖFOS 2012

103036 Theoretische Physik

Zugriff auf Dokument

10.1016/j.physletb.2009.08.027

http://arxiv.org/abs/0907.1451

Zitationsweisen

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title = "Reanalysis of pion pion phase shifts from K -> pi pi decays",

abstract = "We re-investigate the impact of isospin violation for extracting the s -wave ππ scattering phase shift difference δ0(MK)−δ2(MK)δ0(MK)−δ2(MK) from K→ππK→ππ decays. Compared to our previous analysis in 2003, more precise experimental data and improved knowledge of low-energy constants are used. In addition, we employ a more robust data-driven method to obtain the phase shift difference δ0(MK)−δ2(MK)=(52.5±exp0.8±theor2.8)°δ0(MK)−δ2(MK)=(52.5±0.8exp±2.8theor)°.",

author = "Vincenzo Cirigliano and Gerhard Ecker and A. Pich",

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year = "2009",

doi = "10.1016/j.physletb.2009.08.027",

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T1 - Reanalysis of pion pion phase shifts from K -> pi pi decays

AU - Cirigliano, Vincenzo

AU - Ecker, Gerhard

AU - Pich, A.

N1 - doi:10.1016/j.physletb.2009.08.027

PY - 2009

Y1 - 2009

N2 - We re-investigate the impact of isospin violation for extracting the s -wave ππ scattering phase shift difference δ0(MK)−δ2(MK)δ0(MK)−δ2(MK) from K→ππK→ππ decays. Compared to our previous analysis in 2003, more precise experimental data and improved knowledge of low-energy constants are used. In addition, we employ a more robust data-driven method to obtain the phase shift difference δ0(MK)−δ2(MK)=(52.5±exp0.8±theor2.8)°δ0(MK)−δ2(MK)=(52.5±0.8exp±2.8theor)°.

AB - We re-investigate the impact of isospin violation for extracting the s -wave ππ scattering phase shift difference δ0(MK)−δ2(MK)δ0(MK)−δ2(MK) from K→ππK→ππ decays. Compared to our previous analysis in 2003, more precise experimental data and improved knowledge of low-energy constants are used. In addition, we employ a more robust data-driven method to obtain the phase shift difference δ0(MK)−δ2(MK)=(52.5±exp0.8±theor2.8)°δ0(MK)−δ2(MK)=(52.5±0.8exp±2.8theor)°.

U2 - 10.1016/j.physletb.2009.08.027

DO - 10.1016/j.physletb.2009.08.027

M3 - Article

SN - 0370-2693

VL - 679

SP - 445

EP - 448

JO - Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 5

ER -

Reanalysis of pion pion phase shifts from K -> pi pi decays

Abstract

ÖFOS 2012

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