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Title: Evidence for a $$B_s^0 \pi^\pm$$ state

Abstract

Here, we report evidence for a narrow structure, X(5568), in the decay sequence X(5568)→$$B_s^0 \pi^\pm$$, B$$_s^0$$ →J/ψΦ, J/ψ→μ+μ-, Φ→K+K-. This is evidence for the first instance of a hadronic state with valence quarks of four different flavors. The mass and natural width of this state are measured to be m=5567.8±2.9(stat) $$+0.9\atop{-1.9}$$ (syst) MeV/c2 and Γ=21.9±6.4(stat)$$+5.0\atop{-2.5}$$ (syst) MeV/c2. If the decay is X(5568)→B$$*\atop{s}$$ π±→B$$0\atop{s}$$ γπ± with an unseen γ, m(X(5568)) will be shifted up by m(B$$*\atop{s}$$ )-m(B$$0\atop{s}$$)~49 MeV/c2. This measurement is based on 10.4 fb-1 of $$p\bar{p}$$ collision data at $$\sqrt{s}$$ =1.96 TeV collected by the D0 experiment at the Fermilab Tevatron collider.

Authors:
 [1]
  1. Joint Inst. for Nuclear Research (JINR), Dubna (Russian Federation). et al.
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
D0 Collaboration
OSTI Identifier:
1253582
Alternate Identifier(s):
OSTI ID: 1260864
Report Number(s):
FERMILAB-PUB-16-038-E; arXiv:1602.07588
Journal ID: ISSN 0031-9007; 1423301; TRN: US1601715
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 117; Journal Issue: 2; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Abazov, V. M. Evidence for a $B_s^0 \pi^\pm$ state. United States: N. p., 2016. Web. doi:10.1103/PhysRevLett.117.022003.
Abazov, V. M. Evidence for a $B_s^0 \pi^\pm$ state. United States. doi:10.1103/PhysRevLett.117.022003.
Abazov, V. M. Thu . "Evidence for a $B_s^0 \pi^\pm$ state". United States. doi:10.1103/PhysRevLett.117.022003. https://www.osti.gov/servlets/purl/1253582.
@article{osti_1253582,
title = {Evidence for a $B_s^0 \pi^\pm$ state},
author = {Abazov, V. M.},
abstractNote = {Here, we report evidence for a narrow structure, X(5568), in the decay sequence X(5568)→$B_s^0 \pi^\pm$, B$_s^0$ →J/ψΦ, J/ψ→μ+μ-, Φ→K+K-. This is evidence for the first instance of a hadronic state with valence quarks of four different flavors. The mass and natural width of this state are measured to be m=5567.8±2.9(stat) $+0.9\atop{-1.9}$ (syst) MeV/c2 and Γ=21.9±6.4(stat)$+5.0\atop{-2.5}$ (syst) MeV/c2. If the decay is X(5568)→B$*\atop{s}$ π±→B$0\atop{s}$ γπ± with an unseen γ, m(X(5568)) will be shifted up by m(B$*\atop{s}$ )-m(B$0\atop{s}$)~49 MeV/c2. This measurement is based on 10.4 fb-1 of $p\bar{p}$ collision data at $\sqrt{s}$ =1.96 TeV collected by the D0 experiment at the Fermilab Tevatron collider.},
doi = {10.1103/PhysRevLett.117.022003},
journal = {Physical Review Letters},
number = 2,
volume = 117,
place = {United States},
year = {2016},
month = {7}
}

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Works referenced in this record:

Doubly Heavy Tetraquarks and Baryons
journal, January 2014


Trial factors for the look elsewhere effect in high energy physics
journal, October 2010


New Look at Scalar Mesons
journal, November 2004


Observation of Two Charged Bottomoniumlike Resonances in Υ ( 5 S ) Decays
journal, March 2012


Evidence for a Narrow Near-Threshold Structure in the J / ψ ϕ Mass Spectrum in B + J / ψ ϕ K + Decays
journal, June 2009


Observation of a Charged Charmoniumlike Structure in e + e ( D * D ¯ * ) ± π at s = 4.26 GeV
journal, April 2014


Muon reconstruction and identification with the Run II D0 detector
journal, February 2014

  • Abazov, V. M.; Abbott, B.; Acharya, B. S.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 737
  • DOI: 10.1016/j.nima.2013.11.050

Review of Particle Physics
journal, August 2014


Observation of a Resonancelike Structure in the π + ψ Mass Distribution in Exclusive B K π + ψ Decays
journal, April 2008


Observation of J / ψ p Resonances Consistent with Pentaquark States in Λ b 0 J / ψ K p Decays
journal, August 2015


Treatment of the background error in the statistical analysis of Poisson processes
journal, May 1999


High-energy-physics event generation with Pythia 6.1
journal, April 2001


Observation of a Charged Charmoniumlike Structure in e + e π + π J / ψ at s = 4.26 GeV
journal, June 2013


The upgraded DØ detector
journal, September 2006

  • Abazov, V. M.; Abbott, B.; Abolins, M.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 565, Issue 2
  • DOI: 10.1016/j.nima.2006.05.248

Inclusive Production of the X ( 4140 ) State in p p ¯ Collisions at D0
journal, December 2015


Study of e + e π + π J / ψ and Observation of a Charged Charmoniumlike State at Belle
journal, June 2013


    Works referencing / citing this record:

    Study of the X ± ( 5568 ) state with semileptonic decays of the B s 0 meson
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    Doubly charmed tetraquarks in a diquark–antidiquark model
    journal, June 2018

    • Yan, Xiaojun; Zhong, Bin; Zhu, Ruilin
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    • DOI: 10.1142/s0217751x18500963

    Study of the X ± ( 5568 ) state with semileptonic decays of the B s 0 meson
    journal, May 2018


    Doubly charmed tetraquarks in a diquark–antidiquark model
    journal, June 2018

    • Yan, Xiaojun; Zhong, Bin; Zhu, Ruilin
    • International Journal of Modern Physics A, Vol. 33, Issue 16
    • DOI: 10.1142/s0217751x18500963