We present measurements of the inclusive production of antideuterons in e+e− annihilation into hadrons at ≈10.58  GeV center-of-mass energy and in ϒ(1S,2S,3S) decays. The results are obtained using data collected by the BABAR detector at the PEP-II electron-positron collider. Assuming a fireball spectral shape for the emitted antideuteron momentum, we find ℬ(ϒ(1S)→d¯X)=(2.81±0.49(stat)+0.20−0.24(syst))×10−5, ℬ(ϒ(2S)→d¯X)=(2.64±0.11(stat)+0.26−0.21(syst))×10−5, ℬ(ϒ(3S)→d¯X)=(2.33±0.15(stat)+0.31−0.28(syst))×10−5, and σ(e+e−→d¯X)=(9.63±0.41(stat)+1.17−1.01(syst)  fb.

Lees, J.P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2014). Antideuteron production in Upsilon(nS) decays and in e(+)e(-) -> q(q) over bar at root s approximate to 10.58 GeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 89(11), 1-8 [10.1103/PhysRevD.89.111102].

Antideuteron production in Upsilon(nS) decays and in e(+)e(-) -> q(q) over bar at root s approximate to 10.58 GeV

PATRIGNANI, CLAUDIA;
2014

Abstract

We present measurements of the inclusive production of antideuterons in e+e− annihilation into hadrons at ≈10.58  GeV center-of-mass energy and in ϒ(1S,2S,3S) decays. The results are obtained using data collected by the BABAR detector at the PEP-II electron-positron collider. Assuming a fireball spectral shape for the emitted antideuteron momentum, we find ℬ(ϒ(1S)→d¯X)=(2.81±0.49(stat)+0.20−0.24(syst))×10−5, ℬ(ϒ(2S)→d¯X)=(2.64±0.11(stat)+0.26−0.21(syst))×10−5, ℬ(ϒ(3S)→d¯X)=(2.33±0.15(stat)+0.31−0.28(syst))×10−5, and σ(e+e−→d¯X)=(9.63±0.41(stat)+1.17−1.01(syst)  fb.
2014
Lees, J.P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2014). Antideuteron production in Upsilon(nS) decays and in e(+)e(-) -> q(q) over bar at root s approximate to 10.58 GeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 89(11), 1-8 [10.1103/PhysRevD.89.111102].
Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Brown, D. N.; Kerth, L. T.; Kolomensky, Yu. G.; Lee, M. J.; Ly...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/534847
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