Search for a narrow baryonic state decaying to pKS                      0 and pKS                      0 in deep inelastic scattering at HERA

The ZEUS collaboration

doi:10.1016/j.physletb.2016.06.001

Search for a narrow baryonic state decaying to pK_S ⁰ and pK_S ⁰ in deep inelastic scattering at HERA

The ZEUS collaboration

Department of Particle Physics and Astrophysics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

A search for a narrow baryonic state in the pK_S ⁰ and pK_S ⁰ system has been performed in ep collisions at HERA with the ZEUS detector using an integrated luminosity of 358pb^-1 taken in 2003-2007. The search was performed with deep inelastic scattering events at an ep centre-of-mass energy of 318GeV for exchanged photon virtuality, Q², between 20 and 100GeV². Contrary to evidence presented for such a state around 1.52 GeV in a previous ZEUS analysis using a sample of 121 pb^-1 taken in 1996-2000, no resonance peak was found in the p(p)K_S ⁰ invariant-mass distribution in the range 1.45-1.7 GeV. Upper limits on the production cross section are set.

Original language	English
Pages (from-to)	446-453
Number of pages	8
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	759
Early online date	7 Jun 2016
DOIs	https://doi.org/10.1016/j.physletb.2016.06.001
Publication status	Published - 10 Aug 2016

Funding

We appreciate the contributions to the construction, maintenance and operation of the ZEUS detector of many people who are not listed as authors. The HERA machine group and the DESY computing staff are especially acknowledged for their success in providing excellent operation of the collider and the data-analysis environment. We thank the DESY directorate for their strong support and encouragement. Publisher Copyright: © 2016 The Author(s).

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Access to Document

10.1016/j.physletb.2016.06.001Licence: CC BY

Cite this

@article{c503806401d9459cb22937fdef64cfd3,

title = "Search for a narrow baryonic state decaying to pKS 0 and pKS 0 in deep inelastic scattering at HERA",

abstract = "A search for a narrow baryonic state in the pKS 0 and pKS 0 system has been performed in ep collisions at HERA with the ZEUS detector using an integrated luminosity of 358pb-1 taken in 2003-2007. The search was performed with deep inelastic scattering events at an ep centre-of-mass energy of 318GeV for exchanged photon virtuality, Q2, between 20 and 100GeV2. Contrary to evidence presented for such a state around 1.52 GeV in a previous ZEUS analysis using a sample of 121 pb-1 taken in 1996-2000, no resonance peak was found in the p(p)KS 0 invariant-mass distribution in the range 1.45-1.7 GeV. Upper limits on the production cross section are set.",

author = "{The ZEUS collaboration} and H. Abramowicz and I. Abt and L. Adamczyk and M. Adamus and S. Antonelli and V. Aushev and O. Behnke and U. Behrens and A. Bertolin and S. Bhadra and I. Bloch and Boos, {E. G.} and I. Brock and Brook, {N. H.} and R. Brugnera and A. Bruni and Bussey, {P. J.} and A. Caldwell and M. Capua and U. Karshon",

year = "2016",

month = aug,

day = "10",

doi = "10.1016/j.physletb.2016.06.001",

language = "English",

volume = "759",

pages = "446--453",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Search for a narrow baryonic state decaying to pKS 0 and pKS 0 in deep inelastic scattering at HERA

AU - The ZEUS collaboration

AU - Abramowicz, H.

AU - Abt, I.

AU - Adamczyk, L.

AU - Adamus, M.

AU - Antonelli, S.

AU - Aushev, V.

AU - Behnke, O.

AU - Behrens, U.

AU - Bertolin, A.

AU - Bhadra, S.

AU - Bloch, I.

AU - Boos, E. G.

AU - Brock, I.

AU - Brook, N. H.

AU - Brugnera, R.

AU - Bruni, A.

AU - Bussey, P. J.

AU - Caldwell, A.

AU - Capua, M.

AU - Karshon, U.

PY - 2016/8/10

Y1 - 2016/8/10

N2 - A search for a narrow baryonic state in the pKS 0 and pKS 0 system has been performed in ep collisions at HERA with the ZEUS detector using an integrated luminosity of 358pb-1 taken in 2003-2007. The search was performed with deep inelastic scattering events at an ep centre-of-mass energy of 318GeV for exchanged photon virtuality, Q2, between 20 and 100GeV2. Contrary to evidence presented for such a state around 1.52 GeV in a previous ZEUS analysis using a sample of 121 pb-1 taken in 1996-2000, no resonance peak was found in the p(p)KS 0 invariant-mass distribution in the range 1.45-1.7 GeV. Upper limits on the production cross section are set.

AB - A search for a narrow baryonic state in the pKS 0 and pKS 0 system has been performed in ep collisions at HERA with the ZEUS detector using an integrated luminosity of 358pb-1 taken in 2003-2007. The search was performed with deep inelastic scattering events at an ep centre-of-mass energy of 318GeV for exchanged photon virtuality, Q2, between 20 and 100GeV2. Contrary to evidence presented for such a state around 1.52 GeV in a previous ZEUS analysis using a sample of 121 pb-1 taken in 1996-2000, no resonance peak was found in the p(p)KS 0 invariant-mass distribution in the range 1.45-1.7 GeV. Upper limits on the production cross section are set.

UR - http://www.scopus.com/inward/record.url?scp=84974855850&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2016.06.001

DO - 10.1016/j.physletb.2016.06.001

M3 - Article

AN - SCOPUS:84974855850

SN - 0370-2693

VL - 759

SP - 446

EP - 453

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

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