Determination of the Θ+ parity from γn → K -K+n
Autor(a) principal: | |
---|---|
Data de Publicação: | 2004 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.physletb.2003.12.070 http://hdl.handle.net/11449/67687 |
Resumo: | It is demonstrated that measurements of photon asymmetry in the γn → K-K+n reaction, can most likely determine the parity of the newly discovered Θ+ pentaquark. We predict that if the parity of Θ+ is positive, the photon asymmetry is significantly positive; if the parity is negative, the photon asymmetry is significantly negative. If the background contribution is large, the photon asymmetry may become very small in magnitude, thereby making it difficult to distinguish between the positive and negative parity results. However, even in this case, a combined analysis of the (K+n) invariant mass distribution and photon asymmetry should allow a determination of the parity of Θ+. © 2004 Published by Elsevier B.V. |
id |
UNSP_6542e9721388e68b7ac716ae59bd043a |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/67687 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Determination of the Θ+ parity from γn → K -K+nΘ+ parity determinationγn → K-K+n reaction(K+n) invariant mass distributionPhoton asymmetryab initio calculationatomic particlemathematical analysismathematical modelmolecular weightnuclear physicsphotonIt is demonstrated that measurements of photon asymmetry in the γn → K-K+n reaction, can most likely determine the parity of the newly discovered Θ+ pentaquark. We predict that if the parity of Θ+ is positive, the photon asymmetry is significantly positive; if the parity is negative, the photon asymmetry is significantly negative. If the background contribution is large, the photon asymmetry may become very small in magnitude, thereby making it difficult to distinguish between the positive and negative parity results. However, even in this case, a combined analysis of the (K+n) invariant mass distribution and photon asymmetry should allow a determination of the parity of Θ+. © 2004 Published by Elsevier B.V.Department of Physics and Astronomy University of Georgia, Athens, GA 30602Instituto de Fisica Teorica UNESP, Rua Pamplona 145, 01405-900 Sao Paulo SPInstituto de Fisica Teorica UNESP, Rua Pamplona 145, 01405-900 Sao Paulo SPUniversity of GeorgiaUniversidade Estadual Paulista (Unesp)Nakayama, K.Tsushima, K. [UNESP]2014-05-27T11:21:03Z2014-05-27T11:21:03Z2004-03-18info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article269-277application/pdfhttp://dx.doi.org/10.1016/j.physletb.2003.12.070Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 583, n. 3-4, p. 269-277, 2004.0370-2693http://hdl.handle.net/11449/6768710.1016/j.physletb.2003.12.0702-s2.0-13423006702-s2.0-1342300670.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics4.2542,336info:eu-repo/semantics/openAccess2023-10-03T06:02:51Zoai:repositorio.unesp.br:11449/67687Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:52:10.725004Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Determination of the Θ+ parity from γn → K -K+n |
title |
Determination of the Θ+ parity from γn → K -K+n |
spellingShingle |
Determination of the Θ+ parity from γn → K -K+n Nakayama, K. Θ+ parity determination γn → K-K+n reaction (K+n) invariant mass distribution Photon asymmetry ab initio calculation atomic particle mathematical analysis mathematical model molecular weight nuclear physics photon |
title_short |
Determination of the Θ+ parity from γn → K -K+n |
title_full |
Determination of the Θ+ parity from γn → K -K+n |
title_fullStr |
Determination of the Θ+ parity from γn → K -K+n |
title_full_unstemmed |
Determination of the Θ+ parity from γn → K -K+n |
title_sort |
Determination of the Θ+ parity from γn → K -K+n |
author |
Nakayama, K. |
author_facet |
Nakayama, K. Tsushima, K. [UNESP] |
author_role |
author |
author2 |
Tsushima, K. [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
University of Georgia Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Nakayama, K. Tsushima, K. [UNESP] |
dc.subject.por.fl_str_mv |
Θ+ parity determination γn → K-K+n reaction (K+n) invariant mass distribution Photon asymmetry ab initio calculation atomic particle mathematical analysis mathematical model molecular weight nuclear physics photon |
topic |
Θ+ parity determination γn → K-K+n reaction (K+n) invariant mass distribution Photon asymmetry ab initio calculation atomic particle mathematical analysis mathematical model molecular weight nuclear physics photon |
description |
It is demonstrated that measurements of photon asymmetry in the γn → K-K+n reaction, can most likely determine the parity of the newly discovered Θ+ pentaquark. We predict that if the parity of Θ+ is positive, the photon asymmetry is significantly positive; if the parity is negative, the photon asymmetry is significantly negative. If the background contribution is large, the photon asymmetry may become very small in magnitude, thereby making it difficult to distinguish between the positive and negative parity results. However, even in this case, a combined analysis of the (K+n) invariant mass distribution and photon asymmetry should allow a determination of the parity of Θ+. © 2004 Published by Elsevier B.V. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-03-18 2014-05-27T11:21:03Z 2014-05-27T11:21:03Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.physletb.2003.12.070 Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 583, n. 3-4, p. 269-277, 2004. 0370-2693 http://hdl.handle.net/11449/67687 10.1016/j.physletb.2003.12.070 2-s2.0-1342300670 2-s2.0-1342300670.pdf |
url |
http://dx.doi.org/10.1016/j.physletb.2003.12.070 http://hdl.handle.net/11449/67687 |
identifier_str_mv |
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 583, n. 3-4, p. 269-277, 2004. 0370-2693 10.1016/j.physletb.2003.12.070 2-s2.0-1342300670 2-s2.0-1342300670.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 4.254 2,336 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
269-277 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128285006102528 |