Measurement of the production cross section ratio σ(χ<inf>b2</inf>(1P))/σ(χ<inf>b1</inf>(1P)) in pp collisions at s=8TeV

Name: Measurement of the production cross section ratio σ(χ b2 (1P))/σ(χ b1 (1P)) in pp collisions at s=8TeV
Author: Khachatryan, V., Işıldak, Bora

İsim	Measurement of the production cross section ratio σ(χ<inf>b2</inf>(1P))/σ(χ<inf>b1</inf>(1P)) in pp collisions at s=8TeV
Yazar	Khachatryan, V., Işıldak, Bora
Basım Tarihi:	2015-04-09
Basım Yeri	- Elsevier
Konu	CMS, Quarkonium production, P-wave states, Bottomonium
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	1873-2445
Kayıt Numarası	755513b5-26db-4e95-ab50-0becfb206485
Lokasyon	Natural and Mathematical Sciences
Tarih	2015-04-09
Notlar	BMWF ; FWF ; FNRS ; FWO ; CNPq ; CAPES ; FAPERJ ; FAPESP ; MES ; CERN ; CAS ; MoST ; NSFC ; COLCIENCIAS ; MSES ; RPF ; MoER ; ERDF ; Academy of Finland ; MEC ; HIP ; CEA ; CNRS ; BMBF ; DFG ; HGF ; GSRT ; OTKA ; NKTH ; DAE ; DST ; IPM ; SFI ; INFN ; NRF ; WCU ; LAS ; CINVESTAV ; CONACYT ; UASLP-FAI ; MSI ; PAEC ; MSHE ; NSC ; FCT ; JINR ; MON ; RosAtom ; RAS ; RFBR ; MESTD ; SEIDI ; CPAN ; Swiss Funding Agencies ; NSC ; ThEPCenter ; IPST ; STAR ; NSTDA ; TUBITAK ; TAEK ; NASU ; STFC ; DOE ; NSF.
Örnek Metin	A measurement of the production cross section ratio σ(χb2(1P))/σ(χb1(1P)) is presented. The χb1(1P) and χb2(1P) bottomonium states, promptly produced in pp collisions at View the MathML source, are detected by the CMS experiment at the CERN LHC through their radiative decays χb1,2(1P)→ϒ(1S)+γ. The emitted photons are measured through their conversion to e+e− pairs, whose reconstruction allows the two states to be resolved. The ϒ(1S) is measured through its decay to two muons. An event sample corresponding to an integrated luminosity of 20.7 fb−1 is used to measure the cross section ratio in a phase-space region defined by the photon pseudorapidity, \|ηγ\|<1.0; the ϒ(1S) rapidity, \|yϒ\|<1.5; and the ϒ(1S) transverse momentum, View the MathML source. The cross section ratio shows no significant dependence on the ϒ(1S) transverse momentum, with a measured average value of View the MathML source, where the first uncertainty is the combination of the experimental statistical and systematic uncertainties and the second is from the uncertainty in the ratio of the χb branching fractions.
DOI	10.1016/j.physletb.2015.02.048
Cilt	743

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Measurement of the production cross section ratio σ(χ<inf>b2</inf>(1P))/σ(χ<inf>b1</inf>(1P)) in pp collisions at s=8TeV

Yazar Khachatryan, V., Işıldak, Bora

Basım Tarihi 2015-04-09

Basım Yeri - Elsevier

Konu CMS, Quarkonium production, P-wave states, Bottomonium

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 1873-2445

Kayıt Numarası 755513b5-26db-4e95-ab50-0becfb206485

Lokasyon Natural and Mathematical Sciences

Tarih 2015-04-09

Notlar BMWF ; FWF ; FNRS ; FWO ; CNPq ; CAPES ; FAPERJ ; FAPESP ; MES ; CERN ; CAS ; MoST ; NSFC ; COLCIENCIAS ; MSES ; RPF ; MoER ; ERDF ; Academy of Finland ; MEC ; HIP ; CEA ; CNRS ; BMBF ; DFG ; HGF ; GSRT ; OTKA ; NKTH ; DAE ; DST ; IPM ; SFI ; INFN ; NRF ; WCU ; LAS ; CINVESTAV ; CONACYT ; UASLP-FAI ; MSI ; PAEC ; MSHE ; NSC ; FCT ; JINR ; MON ; RosAtom ; RAS ; RFBR ; MESTD ; SEIDI ; CPAN ; Swiss Funding Agencies ; NSC ; ThEPCenter ; IPST ; STAR ; NSTDA ; TUBITAK ; TAEK ; NASU ; STFC ; DOE ; NSF.

Örnek Metin A measurement of the production cross section ratio σ(χb2(1P))/σ(χb1(1P)) is presented. The χb1(1P) and χb2(1P) bottomonium states, promptly produced in pp collisions at View the MathML source, are detected by the CMS experiment at the CERN LHC through their radiative decays χb1,2(1P)→ϒ(1S)+γ. The emitted photons are measured through their conversion to e+e− pairs, whose reconstruction allows the two states to be resolved. The ϒ(1S) is measured through its decay to two muons. An event sample corresponding to an integrated luminosity of 20.7 fb−1 is used to measure the cross section ratio in a phase-space region defined by the photon pseudorapidity, |ηγ|<1.0; the ϒ(1S) rapidity, |yϒ|<1.5; and the ϒ(1S) transverse momentum, View the MathML source. The cross section ratio shows no significant dependence on the ϒ(1S) transverse momentum, with a measured average value of View the MathML source, where the first uncertainty is the combination of the experimental statistical and systematic uncertainties and the second is from the uncertainty in the ratio of the χb branching fractions.

DOI 10.1016/j.physletb.2015.02.048

Cilt 743