• 3
  • 3
  • 82
  • 82
IPM
30
YEARS OLD

“School of Particles”

Paper   IPM / Particles / 11629
   School of Particles and Accelerator
  Title: Upsilon Production Cross-Section in pp Collisions at sqrts=7 TeV
  Author(s):
1 . Hessamaddin Arfaei
2 . Hamed Bakhshiansohi
3 . Seyed Mohsen Etesami
4 . Ali Fahim
5 . Majid Hashemi
6 . Abideh Jafari
7 . Mohsen Khakzad
8 . A Mohammadi
9 . Mojtaba Mohammadi Najafabadi
10 . Saeid Paktinat Mehdiabadi
11 . Batool Safarzadeh
12 . Maryam Zeinali
  Status: Published
  Journal: Phys. Rev. D
  No.: 112004
  Vol.: 83
  Year: 2011
  Supported by: IPM
  Abstract:
The Upsilon production cross section in proton-proton collisions at sqrt(s) = 7 TeV is measured using a data sample collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 3.1 +/- 0.3 inverse picobarns. Integrated over the rapidity range - y - <2, we find the product of the Upsilon(1S) production cross section and branching fraction to dimuons to be sigma(pp to Upsilon(1S) X) B(Upsilon(1S) to mu+ mu-) = 7.37 +/- 0.13^+0.61_-0.42 0.81 nb, where the first uncertainty is statistical, the second is systematic, and the third is associated with the estimation of the integrated luminosity of the data sample. This cross section is obtained assuming unpolarized Upsilon(1S) production. If the Upsilon(1S) production polarization is fully transverse or fully longitudinal the cross section changes by about 20

Download TeX format
back to top
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
scroll left or right