Yayınlanmış 1 Ocak 2011
| Sürüm v1
Dergi makalesi
Açık
Measurement of B(B)over-bar angular correlations based on secondary vertex reconstruction at root s=7 TeV
Yazarlar/Oluşturanlar
- 1. Yerevan Phys Inst, Yerevan 375036, Armenia
- 2. Inst Hochenergiephys OeAW, Vienna, Austria
Açıklama
A measurement of the angular correlations between beauty and anti-beauty hadrons (B (B) over bar) produced in pp collisions at a centre-of-mass energy of 7 TeV at the CERN LHC is presented, probing for the first time the region of small angular separation. The B hadrons are identified by the presence of displaced secondary vertices from their decays. The B hadron angular separation is reconstructed from the decay vertices and the primary-interaction vertex. The differential B (B) over bar production cross section, measured from a data sample collected by CMS and corresponding to an integrated luminosity of 3.1 pb(-1), shows that a sizable fraction of the B (B) over bar pairs are produced with small opening angles. These studies provide a test of QCD and further insight into the dynamics of b (b) over bar production.
Dosyalar
bib-e096935d-fd95-4c59-99d5-5a7487071a70.txt
Dosyalar
(419 Bytes)
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