Heavy quark production in 7 TeV centre-of-mass energy pp collisions at the LHC is not necessarily flavour symmetric. The production asymmetry, A P, between Ds+ ; Ds- mesons is studied using the φπ ± decay mode in a data sample of 1.0fb -1 collected with the LHCb detector. The difference between π + ; π - detection efficiencies is determined using the ratios of fully reconstructed to partially reconstructed D ± decays. The overall production asymmetry in the Ds± rapidity region 2.0 to 4.5 with transverse momentum larger than 2 GeV is measured to be A P=(-0.33±0.22±0.10)%. This result can constrain models of heavy flavour production. © 2012 CERN.

Measurement of the D s +-D s - production asymmetry in 7 TeV pp collisions

PALANO, Antimo;PAPPAGALLO, MARCO IGNAZIO;
2012-01-01

Abstract

Heavy quark production in 7 TeV centre-of-mass energy pp collisions at the LHC is not necessarily flavour symmetric. The production asymmetry, A P, between Ds+ ; Ds- mesons is studied using the φπ ± decay mode in a data sample of 1.0fb -1 collected with the LHCb detector. The difference between π + ; π - detection efficiencies is determined using the ratios of fully reconstructed to partially reconstructed D ± decays. The overall production asymmetry in the Ds± rapidity region 2.0 to 4.5 with transverse momentum larger than 2 GeV is measured to be A P=(-0.33±0.22±0.10)%. This result can constrain models of heavy flavour production. © 2012 CERN.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11586/179792
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 60
  • ???jsp.display-item.citation.isi??? 52
social impact