Scalar meson sigma phase motion at D+-> pi- pi+pi+ decay
Autor(a) principal: | |
---|---|
Data de Publicação: | 2004 |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Physics |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332004000700017 |
Resumo: | We make a direct and model-independent measurement of the low pi+ pi- mass phase motion in the D+ <FONT FACE=Symbol>® p</FONT>-pi+pi+ decay. Our preliminary results show a strong phase variation, compatible with the isoscalar sigma(500) meson. This result confirms our previous result [1] where we found evidence for the existence of this scalar particle using full Dalitz-plot analysis. We apply the Amplitude Difference (AD) method [2] to the same Fermilab E791 data sample used in the preceding analysis. We also give an example of how we extract the phase motion of the scalar amplitude, looking at the f0(980) in Ds+ <FONT FACE=Symbol>® p</FONT>-pi+pi+ decay. |
id |
SBF-2_c859e9586e2ddecf62e521ea6e7d8ddb |
---|---|
oai_identifier_str |
oai:scielo:S0103-97332004000700017 |
network_acronym_str |
SBF-2 |
network_name_str |
Brazilian Journal of Physics |
repository_id_str |
|
spelling |
Scalar meson sigma phase motion at D+-> pi- pi+pi+ decayWe make a direct and model-independent measurement of the low pi+ pi- mass phase motion in the D+ <FONT FACE=Symbol>® p</FONT>-pi+pi+ decay. Our preliminary results show a strong phase variation, compatible with the isoscalar sigma(500) meson. This result confirms our previous result [1] where we found evidence for the existence of this scalar particle using full Dalitz-plot analysis. We apply the Amplitude Difference (AD) method [2] to the same Fermilab E791 data sample used in the preceding analysis. We also give an example of how we extract the phase motion of the scalar amplitude, looking at the f0(980) in Ds+ <FONT FACE=Symbol>® p</FONT>-pi+pi+ decay.Sociedade Brasileira de Física2004-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332004000700017Brazilian Journal of Physics v.34 n.4a 2004reponame:Brazilian Journal of Physicsinstname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/S0103-97332004000700017info:eu-repo/semantics/openAccessBediaga,Ignacioeng2005-01-28T00:00:00Zoai:scielo:S0103-97332004000700017Revistahttp://www.sbfisica.org.br/v1/home/index.php/pt/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br1678-44480103-9733opendoar:2005-01-28T00:00Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)false |
dc.title.none.fl_str_mv |
Scalar meson sigma phase motion at D+-> pi- pi+pi+ decay |
title |
Scalar meson sigma phase motion at D+-> pi- pi+pi+ decay |
spellingShingle |
Scalar meson sigma phase motion at D+-> pi- pi+pi+ decay Bediaga,Ignacio |
title_short |
Scalar meson sigma phase motion at D+-> pi- pi+pi+ decay |
title_full |
Scalar meson sigma phase motion at D+-> pi- pi+pi+ decay |
title_fullStr |
Scalar meson sigma phase motion at D+-> pi- pi+pi+ decay |
title_full_unstemmed |
Scalar meson sigma phase motion at D+-> pi- pi+pi+ decay |
title_sort |
Scalar meson sigma phase motion at D+-> pi- pi+pi+ decay |
author |
Bediaga,Ignacio |
author_facet |
Bediaga,Ignacio |
author_role |
author |
dc.contributor.author.fl_str_mv |
Bediaga,Ignacio |
description |
We make a direct and model-independent measurement of the low pi+ pi- mass phase motion in the D+ <FONT FACE=Symbol>® p</FONT>-pi+pi+ decay. Our preliminary results show a strong phase variation, compatible with the isoscalar sigma(500) meson. This result confirms our previous result [1] where we found evidence for the existence of this scalar particle using full Dalitz-plot analysis. We apply the Amplitude Difference (AD) method [2] to the same Fermilab E791 data sample used in the preceding analysis. We also give an example of how we extract the phase motion of the scalar amplitude, looking at the f0(980) in Ds+ <FONT FACE=Symbol>® p</FONT>-pi+pi+ decay. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-12-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332004000700017 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332004000700017 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-97332004000700017 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Física |
publisher.none.fl_str_mv |
Sociedade Brasileira de Física |
dc.source.none.fl_str_mv |
Brazilian Journal of Physics v.34 n.4a 2004 reponame:Brazilian Journal of Physics instname:Sociedade Brasileira de Física (SBF) instacron:SBF |
instname_str |
Sociedade Brasileira de Física (SBF) |
instacron_str |
SBF |
institution |
SBF |
reponame_str |
Brazilian Journal of Physics |
collection |
Brazilian Journal of Physics |
repository.name.fl_str_mv |
Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF) |
repository.mail.fl_str_mv |
sbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br |
_version_ |
1754734861566869504 |