Search for the Xb and other hidden-beauty states in the π+π−ϒ(1S) channel at ATLAS

This Letter presents a search for a hidden-beauty counterpart of the X(3872) in the mass ranges of 10.05–10.31 GeV and 10.40–11.00 GeV, in the channel Xb→π+π−ϒ(1S)(→μ+μ−), using 16.2 fb−1 of √s=8 TeV pp collision data collected by the ATLAS detector at the LHC. No evidence for new narrow states is f...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Física
Decay
Mesons
Hidden charm
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85833
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85833
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Decay
Mesons
Hidden charm
spellingShingle Física
Decay
Mesons
Hidden charm
Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Search for the Xb and other hidden-beauty states in the π+π−ϒ(1S) channel at ATLAS
topic_facet Física
Decay
Mesons
Hidden charm
description This Letter presents a search for a hidden-beauty counterpart of the X(3872) in the mass ranges of 10.05–10.31 GeV and 10.40–11.00 GeV, in the channel Xb→π+π−ϒ(1S)(→μ+μ−), using 16.2 fb−1 of √s=8 TeV pp collision data collected by the ATLAS detector at the LHC. No evidence for new narrow states is found, and upper limits are set on the product of the Xb cross section and branching fraction, relative to those of the ϒ(2S), at the 95% confidence level using the CLS approach. These limits range from 0.8% to 4.0%, depending on mass. For masses above 10.1 GeV, the expected upper limits from this analysis are the most restrictive to date. Searches for production of the ϒ(13DJ), ϒ(10860), and ϒ(11020) states also reveal no significant signals.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Search for the Xb and other hidden-beauty states in the π+π−ϒ(1S) channel at ATLAS
title_short Search for the Xb and other hidden-beauty states in the π+π−ϒ(1S) channel at ATLAS
title_full Search for the Xb and other hidden-beauty states in the π+π−ϒ(1S) channel at ATLAS
title_fullStr Search for the Xb and other hidden-beauty states in the π+π−ϒ(1S) channel at ATLAS
title_full_unstemmed Search for the Xb and other hidden-beauty states in the π+π−ϒ(1S) channel at ATLAS
title_sort search for the xb and other hidden-beauty states in the π+π−ϒ(1s) channel at atlas
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/85833
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bdutipo_str Repositorios
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