Measurement of the X(3872) production cross section via decays to J/ψπ + π − in pp collisions at √s=7 TeV

Serguei Chatrchyan; Felix Bachmair; Lukas Bäni; Pierluigi Bortignon; Marco A Buchmann; Bruno Casal Laraña; Nicolas Chanon; Amanda Deisher; Günther Dissertori; Michael Dittmar; Mauro Donegà; Marc Dünser; Philipp Eller; Jürg Eugster; Klaus Freudenreich; Christoph Grab; Dmitry Hits; Pierre Lecomte; Werner Lustermann; Andrea C Marini; Pablo Martinez Ruiz Del Arbol; Niklas Mohr; Filip Moortgat; Christoph Nägeli; Pascal Nef; Francesca Nessi-Tedaldi; Francesco Pandolfi; Luc Pape; Felicitas Pauss; Marco Peruzzi; Frédéric J Ronga; Marco Rossini; Leonardo Sala; Ann-Karin Sanchez; Andrey Starodumov; Benjamin Stieger; Maiko Takahashi; Ludwig Tauscher; Alessandro Thea; Konstantinos Theofilatos; Daniel Treille; Christina Urscheler; Rainer Wallny; Hannsjörg A Weber; Lukas Wehrli; CMS Collaboration

doi:10.1007/JHEP04(2013)154

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Measurement of the X(3872) production cross section via decays to J/ψπ + π − in pp collisions at √s=7 TeV

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Measurement of the X(3872) production cross section via decays to J/ψπ + π − in pp collisions at √s=7 TeV

Serguei Chatrchyan, Felix Bachmair, Lukas Bäni, Pierluigi Bortignon, Marco A Buchmann, Bruno Casal Laraña, Nicolas Chanon, Amanda Deisher, Günther Dissertori, Michael Dittmar, …

The journal of high energy physics, Vol.2013(4), 154

04/01/2013

DOI: 10.1007/JHEP04(2013)154

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Abstract

The production of the X(3872) is studied in pp collisions at s√=7 TeV, using decays to J/ψπ + π −, where the J/ψ decays to two muons. The data were recorded by the CMS experiment and correspond to an integrated luminosity of 4.8 fb−1. The measurements are performed in a kinematic range in which the X(3872) candidates have a transverse momentum 10 < p T < 50 GeV and rapidity |y| < 1.2. The ratio of the X(3872) and ψ(2S) cross sections times their branching fractions into J/ψπ + π − is measured as a function of p T. In addition, the fraction of X(3872) originating from B decays is determined. From these measurements the prompt X(3872) differential cross section times branching fraction as a function of p T is extracted. The π + π − mass spectrum of the J/ψπ + π − system in the X(3872) decays is also investigated.

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Hadron Scattering

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Title: Subtitle: Measurement of the X(3872) production cross section via decays to J/ψπ + π − in pp collisions at √s=7 TeV
Creators: Serguei Chatrchyan
Felix Bachmair
Lukas Bäni
Pierluigi Bortignon
Marco A Buchmann
Bruno Casal Laraña
Nicolas Chanon
Amanda Deisher
Günther Dissertori
Michael Dittmar
Mauro Donegà
Marc Dünser
Philipp Eller
Jürg Eugster
Klaus Freudenreich
Christoph Grab
Dmitry Hits
Pierre Lecomte
Werner Lustermann
Andrea C Marini
Pablo Martinez Ruiz Del Arbol
Niklas Mohr
Filip Moortgat
Christoph Nägeli
Pascal Nef
Francesca Nessi-Tedaldi
Francesco Pandolfi
Luc Pape
Felicitas Pauss
Marco Peruzzi
Frédéric J Ronga
Marco Rossini
Leonardo Sala
Ann-Karin Sanchez
Andrey Starodumov
Benjamin Stieger
Maiko Takahashi
Ludwig Tauscher
Alessandro Thea
Konstantinos Theofilatos
Daniel Treille
Christina Urscheler
Rainer Wallny
Hannsjörg A Weber
Lukas Wehrli
CMS Collaboration
Contributors: Y Onel (Contributor) - University of Iowa, Physics and Astronomy
Resource Type: Journal article
Publication Details: The journal of high energy physics, Vol.2013(4), 154
Publisher: ETH Zurich
DOI: 10.1007/JHEP04(2013)154
ISSN: 1126-6708
eISSN: 1029-8479
Language: English
Date published: 04/01/2013
Academic Unit: Physics and Astronomy
Record Identifier: 9984199774502771

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