|
1510 | 1510 | "\n", |
1511 | 1511 | "<CENTER><img src=\"https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2023-22/figaux_08c.png\" style=\"width:80%\"></CENTER>\n", |
1512 | 1512 | "\n", |
1513 | | - "The setup here is similar, with each number showing the efficiency for a particular configuration of a new physics model with specific masses for the new particles. Here, notice that the efficiency is over 1 for many of the model points, meaning that the efficiency is over 100%! That seems surprising, and requires some thought to understand. Let's consider a simple analogy. Let's say that typically 10% of the cars on a road are white, and you want to count the number of white cars in the next 100. If you have perfect efficiency, and there are 10 white cars, you’ll find 10 white cars. Now suppose that you can always correctly identify a white car, but now half the time you see a blue car you accidentally count it as white. Then you could count *more* than 10 white cars, when there are only 10 in reality. That would produce an efficiency over 100%.\n", |
| 1513 | + "The setup here is similar, with each number showing the efficiency for a particular configuration of a new physics model with specific masses for the new particles. Here, notice that the efficiency is over 1 for many of the model points, meaning that the efficiency is over 100%! That seems surprising, and requires some thought to understand. Let's consider a simple analogy. Let's say that typically 10% of the cars on a road are white, and you want to count the number of white cars in the next 100. If you have perfect efficiency, and there are 10 white cars, you'll find 10 white cars. Now suppose that you can always correctly identify a white car, but now half the time you see a blue car you accidentally count it as white. Then you could count *more* than 10 white cars, when there are only 10 in reality. That would produce an efficiency over 100%.\n", |
1514 | 1514 | "\n", |
1515 | | - "In a similar way, our detector sometimes makes mistakes that make more signal events than expected turn up in the signal region. In some sense, that’s nice to have — we have more signal in our signal region, and we have an easier time finding new particles than we would if the detector was perfect. In practice, that usually comes with larger backgrounds (larger numbers of Standard Model events), which make the searches more difficult.\n", |
| 1515 | + "In a similar way, our detector sometimes makes mistakes that make more signal events than expected turn up in the signal region. In some sense, that's nice to have: we have more signal in our signal region, and we have an easier time finding new particles than we would if the detector was perfect. In practice, that usually comes with larger backgrounds (larger numbers of Standard Model events), which make the searches more difficult.\n", |
1516 | 1516 | "\n", |
1517 | 1517 | "### Reading results\n", |
1518 | 1518 | "\n", |
1519 | | - "Many of the papers that you might read in high energy particle physics will provide, either directly in the paper or in \"auxilliary material\" released with the paper, the acceptance and efficiency of the analysis. Understanding these numbers can be a big help towards understanding the results, and why they look the way they do. They can help you disentangle what is caused by the choices made in the design of the analysis (the acceptance) and what is caused by the detector itself (the efficiency)." |
| 1519 | + "Many of the papers that you might read in high energy particle physics will provide, either directly in the paper or in \"auxilliary material\" released with the paper, the acceptance and efficiency of the analysis. Understanding these numbers can be a big help towards understanding the results, and why they look the way they do. They can help you disentangle what is caused by the choices made in the design of the analysis (the acceptance) and what is caused by the detector itself (the efficiency).", |
| 1520 | + "\n", |
| 1521 | + "\n", |
| 1522 | + "<div class=\"alert alert-block alert-info\">\n", |
| 1523 | + "We welcome your feedback on this notebook or any of our other materials! Please <a href=\"https://forms.gle/zKBqS1opAHHemv9U7\">fill out this survey</a> to let us know how we're doing, and you can enter a raffle to win some <a href=\"https://atlas-secretariat.web.cern.ch/merchandise\">ATLAS merchandise</a>!\n", |
| 1524 | + "</div>" |
1520 | 1525 | ] |
1521 | 1526 | } |
1522 | 1527 | ], |
|
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