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LHCb in 2010

LHCb in 2010. First physics results. А.Воробьев Сессия Ученого совета ОФВЭ 28 декабря 2010. Отличительные особенности LHCb. Прецизионный вертексный детектор Высокое разрешение по массе Идентификация K/ π /p (RICH) Область малых углов

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LHCb in 2010

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  1. LHCb in 2010 First physics results А.Воробьев Сессия Ученого совета ОФВЭ 28 декабря 2010

  2. Отличительные особенности LHCb • Прецизионный вертексный детектор • Высокое разрешение по массе • Идентификация K/π/p (RICH) • Область малых углов • 10 мрад <θ< 300 мрад • 2 < η< 6

  3. A.Vorobyov. Seminar HEPD-TPD 14 Oct. 2010

  4. A.Vorobyov. Seminar HEPD-TPD 14 Oct. 2010

  5. Пучковые особенности в 2010 Номиналноябрь 2010 • Светимость 2·1032см-2/сек 1.6·1032 • Число банчей 2808 344 • Число взаимодействий/банч 0.4 2.0 • Расстояние между банчами 25 мксек 75 мксек Интегральная светимость к концу 2010 30 pb-1

  6. LHCb publications B.Bochin, N.Bondar, A.Kashchuk, O.Maev, P.Neustroev, N.Sagidova, Yu.Shcheglov, E.Spiridenkov, A.Vorobyev, An.Vorobyev #1. Prompt K0 production in pp collisions at √s=0.9 TeV #2. Measurement of sigma (pp → b anti-b X) at √s =7 TeV in the forward region

  7. Measurement of sigma (pp → b anti-b X) at √s =7 TeV in the forward region • pp→bb→ Doµ-X • Do→K-π+ Br(b → DoXm-n) =(6.82±0.35)% Low background ( main background - prompt Do) Full Pt range Pseudorapidity 2 < η< 6η = - ln(tan(θ/2) Sensitivity to x≈ 10-5 x ~ Mbb/√s exp (- y ) η –y ≈ 0.5 ± 0.5 ( function on Pt)

  8. a) pp→ Do X b) pp→ BX → Do XDo→K-π+ Measurement of sigma (pp → b anti-b X) at √s =7 TeV in the forward region Analysis of 12 nb-1 prompt prompt Dfb A.Vorobyov. Seminar HEPD-TPD 14 Oct. 2010

  9. pp→ Doμ- XDo→K- π+ Analysis of 12.2 nb-1 Pt(μ) >1.3 GeV RS WS WS RS A.Vorobyov. Seminar HEPD-TPD 14 Oct. 2010

  10. A.Vorobyov. Seminar HEPD-TPD 14 Oct. 2010

  11. Lumi 0.3 nb-1 Lumi 0.2 nb-1

  12. The End A.Vorobyov. Seminar HEPD-TPD 14 Oct. 2010

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