First measurement of proton–proton elastic scattering at RHIC

Bültmann, S.; Chiang, I. H.; Chrien, R. E.; Gill, R. L.; Guryn, W.; Lynn, D.; Pearson, C.; Pile, P.; Rusek, A.; Sakitt, M.; Tepikian, S.; Chwastowski, J. J.; Pawlik, B.; Haguenauer, M.; Bøgdanov, A.; Nurushev, S. B.; Runtzo, M.F.; Strikhanov, M.; Alekseev, I.; Kanavets, V.P.; Koroleva, L. I.; Morozov, B. V.; Svirida, D. N.; Rijssenbeek, M.; Tang, C. J.; Yeung, Simon S.; De, K.; Guler, N.; Li, J; Öztürk, N.; Sandacz, A.

doi:10.1016/j.physletb.2003.11.023

Cited by 29 publications

(12 citation statements)

References 19 publications

(16 reference statements)

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“…= 0.8) over the complete |t| range of (0.02-0.33) GeV 2 with the slope B = (20.1 ± 0.2 stat ± 0.3 syst ) GeV −2 . The TOTEM result for B at low |t| confirms the trend of an increase with √ s [10,[24][25][26][27][28][29]. As a comparison, the exponential fit at the lower end of the |t| range of our previous measurement [22] which covered (0.36-2.5) GeV 2 is also shown in fig.…”

Section: Optics T-scalesupporting

confidence: 76%

First measurement of the total proton-proton cross-section at the LHC energy of \chem{\sqrt{s} = 7\,TeV}

Antchev¹,

Aspell²,

Atanassov³

et al. 2011

EPL

254

163

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Proton-proton elastic scattering at the LHC energy of s = 7 TeV The TOTEM Collaboration, G. Antchev, P. Aspell et al.Measurement of proton-proton elastic scattering and total cross-section at The TOTEM Collaboration, G. Antchev, P. Aspell et al.-LHC optics measurement with proton tracks detected by the Roman pots of the TOTEM experiment The TOTEM Collaboration, G Antchev, P Aspell et al. Abstract -TOTEM has measured the differential cross-section for elastic proton-proton scattering at the LHC energy of √ s = 7 TeV analysing data from a short run with dedicated large-β * optics. A single exponential fit with a slope B = (20.1 ± 0.2 stat ± 0.3 syst ) GeV −2 describes the range of the four-momentum transfer squared |t| from 0.02 to 0.33 GeV 2 . After the extrapolation to |t| = 0, a total elastic scattering cross-section of (24.8 ± 0.2 stat ± 1.2 syst ) mb was obtained. Applying the optical theorem and using the luminosity measurement from CMS, a total proton-proton cross-section of (98.3 ± 0.2 stat ± 2.8 syst ) mb was deduced which is in good agreement with the expectation from the overall fit of previously measured data over a large range of center-of-mass energies. From the total and elastic pp cross-section measurements, an inelastic pp cross-section of (73.5 ± 0.6open access editor's choice 21002-p1The TOTEM Collaboration (G. Antchev et al.) Introduction. -The observation of the rise of the total cross-section with energy was one of the highlights at the ISR, the first CERN collider [1][2][3][4]. Some indirect indications for this unforeseen phenomenon had already come earlier from high-energy cosmic-ray showers [5][6][7]. A long series of total proton-antiproton cross-section measurements followed in the last decades both at the CERN SppS collider [8,9] and at the TEVATRON [10][11][12][13].In this letter, we report the first measurement of the total and elastic proton-proton cross-sections at the CERN Large Hadron Collider (LHC) using the optical theorem together with the luminosity provided by the CMS experiment [14,15]. With a dedicated beam optics configuration (β * = 90 m) TOTEM has measured the differential crosssection of elastic scattering for four-momentum transfer squared values |t| to 2 × 10 −2 GeV 2 , making the extrapolation to the optical point at |t| = 0 possible. This allows the determination of the elastic scattering cross-section as well as the total cross-section.

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Section: Optics T-scalesupporting

confidence: 76%

First measurement of the total proton-proton cross-section at the LHC energy of \chem{\sqrt{s} = 7\,TeV}

Antchev¹,

Aspell²,

Atanassov³

et al. 2011

EPL

254

163

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“…The experiment was carried out by the pp2pp Collaboration at the RHIC-Spin complex as a part of the pp2pp experimental program [1,2,3,4]. The present results complement our previously published results on the analysing power A N [4].…”

Section: Introductionsupporting

confidence: 84%

“…The identification of elastic events is based on the collinearity criterion, hence it requires the simultaneous detection of the scattered protons in a pair of RP detectors on either side of the IP. More details on the experiment and the technique used can be found in [2,3].…”

Section: The Experimentsmentioning

confidence: 99%

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Double spin asymmetries ANN and ASS at
Bültmann
¹
,
Chiang
²
,
Chrien
³

et al. 2007
Physics Letters B
8
0
0
0
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We present the first measurements of the double spin asymmetries A N N and A SS at √ s = 200GeV, obtained by the pp2pp experiment using polarized proton beams at the Relativistic Heavy IonCollider (RHIC). The data were collected in the four momentum transfer t range 0.01 ≤ |t| ≤ 0.03 (GeV/c) 2 . The measured asymmetries, which are consistent with zero, allow us to estimate upper limits on the double helicity-flip amplitudes φ 2 and φ 4 at small |t| as well as on the difference ∆σ T between the total cross sections for transversely polarized protons with antiparallel or parallel spin orientations.PACS numbers: 13.85.Dz and 13.88.+e 2

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“…That is clearly illustrated in the comparison of the recent result by the TOTEM Collaboration with the existing data [38] that includes the pp2pp result at 200 GeV [39]. Moreover, in a model context the slope is evaluated at one point, q 2 = 0, and therefore some bias may always be present in the calculation.…”

Section: Data Ensemble and Fit Proceduresmentioning

confidence: 89%

Aspects of a dynamical gluon mass approach to elastic hadron scattering at LHC

Fagundes¹,

Luna²,

Menon³

et al. 2012

Nuclear Physics A

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We discuss how the main features of the recent LHC data on elastic scattering can be described by a QCD-inspired formalism with a dynamical infrared mass scale. For this purpose new developments on a dynamical gluon mass approach are reported, with emphasis on a method to estimate uncertainty bounds in the predictions for the high-energy scattering observables. We investigate the effects due to the correlations among the fixed and free parameters involved and show that the band of predictions are consistent with the recent data from the TOTEM experiment, including the forward quantities and the differential cross section up to the dip position.

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First measurement of proton–proton elastic scattering at RHIC

Cited by 29 publications

References 19 publications

First measurement of the total proton-proton cross-section at the LHC energy of \chem{\sqrt{s} = 7\,TeV}

First measurement of the total proton-proton cross-section at the LHC energy of \chem{\sqrt{s} = 7\,TeV}

Double spin asymmetries ANN and ASS at
Bültmann
¹
,
Chiang
²
,
Chrien
³

et al. 2007
Physics Letters B
8
0
0
0
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Aspects of a dynamical gluon mass approach to elastic hadron scattering at LHC

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First measurement of proton–proton elastic scattering at RHIC

Cited by 29 publications

References 19 publications

First measurement of the total proton-proton cross-section at the LHC energy of \chem{\sqrt{s} = 7\,TeV}

First measurement of the total proton-proton cross-section at the LHC energy of \chem{\sqrt{s} = 7\,TeV}

Double spin asymmetries ANN and ASS at Bültmann1, Chiang2, Chrien3 et al. 2007Physics Letters B8000View full textAdd to dashboardCite

Aspects of a dynamical gluon mass approach to elastic hadron scattering at LHC

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Double spin asymmetries ANN and ASS at
Bültmann
¹
,
Chiang
²
,
Chrien
³

et al. 2007
Physics Letters B
8
0
0
0
View full text Add to dashboard Cite