Exclusive Photoproduction of Upsilon in pPb collisions with the CMS - INSPIRE

DataBETA

Exclusive Photoproduction of Upsilon in pPb collisions with the CMS

CMS

Collaboration

•

Ruchi Chudasama
(
- Bhabha Atomic Res. Ctr., Srinagar
)

Jun 24, 2016

8 pages

Part of Proceedings, 7th International Conference on Physics and Astrophysics of Quark Gluon Plasma (ICPAQGP 2015) : Kolkata, West Bengal, India, February 2-6, 2015, 042

Published in:

PoS ICPAQGP2015 (2017) 042

Contribution to:

- ICPAQGP 2015
, 042

Published: Jun 24, 2016 by SISSA

e-Print:

1607.00786 [hep-ex]

DOI:

10.22323/1.242.0042

Experiments:

CERN-LHC-CMS

View in:

reference search11 citations

Citations per year

Abstract: (arXiv)

Results of exclusive photoproduction of Upsilon states in Ultraperipheral collisions (UPC) of protons and ions with the CMS experiment are presented, which provides a clean probe of the gluon distribution at small values of parton fractional momenta

x \approx 10^{-2} 10^{4}

at central rapidities (|y|

< 2.5

). The three Upsilon states (1S, 2S, 3S) are measured in the dimuon decay channel along with the photon-photon decaying to dimuon QED continuum at

\sqrt{s_{NN}}=5.02

~TeV for integrated luminosity of

L_{int} = 35

nb

^{-1}

. The total Upsilon photoproduction cross sections at different photon-proton center of mass energy

W_{\gamma p}

and t-differential distributions are presented and compared with other experimental results as well as theoretical predictions.

Note:

To appear in the proceedings of the 7th International Conference on Physics and Astrophysics of Quark Gluon Plasma (ICPAQGP 2015), Kolkata, India. February 2-6, 2015

talk: Kolkata 2015/02/02
p nucleus: interaction
lead
dimuon: mass spectrum
upsilon mesons: exclusive production
upsilon mesons: photoproduction
upsilon mesons: leptonic decay
CMS
CERN LHC Coll
quantum electrodynamics

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Collaboration